对话流实现 文件上传

schoolNewsServ/.bin/mysql/sql/createTableAI.sql

@@ -6,12 +6,7 @@ CREATE TABLE `tb_ai_agent_config` (
   `name` VARCHAR(100) NOT NULL COMMENT '智能体名称',
   `avatar` VARCHAR(255) DEFAULT NULL COMMENT '智能体头像',
   `description` VARCHAR(500) DEFAULT NULL COMMENT '智能体描述',
-  `system_prompt` TEXT COMMENT '系统提示词',
+  `connect_internet` INT(4) DEFAULT 0 COMMENT '是否连接互联网（0否 1是）',
-  `model_name` VARCHAR(100) DEFAULT NULL COMMENT '模型名称',
-  `model_provider` VARCHAR(50) DEFAULT NULL COMMENT '模型提供商',
-  `temperature` DECIMAL(3,2) DEFAULT 0.70 COMMENT '温度值',
-  `max_tokens` INT(11) DEFAULT 2000 COMMENT '最大tokens',
-  `top_p` DECIMAL(3,2) DEFAULT 1.00 COMMENT 'Top P值',
   `dify_app_id` VARCHAR(100) DEFAULT NULL COMMENT 'Dify应用ID',
   `dify_api_key` VARCHAR(255) DEFAULT NULL COMMENT 'Dify应用API密钥',
   `status` INT(4) DEFAULT 1 COMMENT '状态（0禁用 1启用）',
@@ -125,10 +120,12 @@ CREATE TABLE `tb_ai_message` (
 -- 上传文件表
 DROP TABLE IF EXISTS `tb_ai_upload_file`;
 CREATE TABLE `tb_ai_upload_file` (
-  `id` VARCHAR(50) NOT NULL COMMENT '文件ID',
+  `id` VARCHAR(50) NOT NULL COMMENT 'ID',
   `user_id` VARCHAR(50) NOT NULL COMMENT '用户ID',
   `knowledge_id` VARCHAR(50) DEFAULT NULL COMMENT '所属知识库ID',
   `conversation_id` VARCHAR(50) DEFAULT NULL COMMENT '关联会话ID（对话中上传）',
+  `message_id` VARCHAR(50) DEFAULT NULL COMMENT '关联消息ID（绑定到具体的用户消息）',
+  `sys_file_id` VARCHAR(32) DEFAULT NULL COMMENT '系统文件ID（关联tb_sys_file实现永久存储）',
   `file_name` VARCHAR(255) NOT NULL COMMENT '文件名',
   `file_path` VARCHAR(500) NOT NULL COMMENT '文件路径',
   `file_size` BIGINT(20) DEFAULT 0 COMMENT '文件大小（字节）',
@@ -137,6 +134,7 @@ CREATE TABLE `tb_ai_upload_file` (
   `extracted_text` LONGTEXT COMMENT '提取的文本内容',
   `dify_document_id` VARCHAR(100) DEFAULT NULL COMMENT 'Dify文档ID',
   `dify_batch_id` VARCHAR(100) DEFAULT NULL COMMENT 'Dify批次ID',
+  `dify_upload_file_id` VARCHAR(100) DEFAULT NULL COMMENT 'Dify上传文件ID（对话中上传的文件）',
   `chunk_count` INT(11) DEFAULT 0 COMMENT '分段数量',
   `status` INT(4) DEFAULT 0 COMMENT '状态（0上传中 1处理中 2已完成 3失败）',
   `error_message` VARCHAR(500) DEFAULT NULL COMMENT '错误信息',
@@ -148,11 +146,14 @@ CREATE TABLE `tb_ai_upload_file` (
   KEY `idx_user` (`user_id`),
   KEY `idx_knowledge` (`knowledge_id`),
   KEY `idx_conversation` (`conversation_id`),
+  KEY `idx_message` (`message_id`),
+  KEY `idx_sys_file` (`sys_file_id`),
   KEY `idx_dify_document` (`dify_document_id`),
+  KEY `idx_dify_upload_file` (`dify_upload_file_id`),
   KEY `idx_status` (`status`),
   KEY `idx_create_time` (`create_time`),
   KEY `idx_deleted` (`deleted`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='上传文件表';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='上传文件表（关联系统文件表）';
 
 -- AI使用统计表
 DROP TABLE IF EXISTS `tb_ai_usage_statistics`;
@@ -214,11 +215,10 @@ CREATE TABLE `tb_ai_usage_statistics` (
 
 -- 插入默认智能体配置
 INSERT INTO `tb_ai_agent_config` 
-  (`id`, `name`, `avatar`, `description`, `system_prompt`, `model_name`, `model_provider`, `status`, `creator`, `create_time`) 
+  (`id`, `name`, `avatar`, `description`, `connect_internet`, `status`, `creator`, `create_time`) 
 VALUES 
-  ('agent_default_001', '校园助手', '/img/agent/default.png', '我是您的智能校园助手，可以帮助您解答校园相关问题', 
+  ('agent_default_001', '校园助手', NULL, '我是您的智能校园助手，可以帮助您解答校园相关问题', 
-   '你是一个友好、专业的校园助手。你需要基于校园知识库回答用户问题，语气亲切自然。如果知识库中没有相关信息，请诚实告知用户。', 
+   0, 1, '1', NOW());
-   'gpt-3.5-turbo', 'openai', 1, '1', NOW());
 
 -- 插入示例知识库（需要配合权限表使用）
 INSERT INTO `tb_ai_knowledge` 

schoolNewsServ/.bin/mysql/sql/initAllData.sql

@@ -1,9 +1,4 @@
 use school_news;
-
--- 插入AI智能体配置数据
-INSERT INTO `tb_ai_agent_config` (id, name, system_prompt, model_name, temperature, max_tokens, status, creator, create_time) VALUES
-('1', '思政小帮手', '你是一个专业的思政学习助手，致力于帮助用户学习思想政治理论知识。请基于提供的知识库内容，为用户提供准确、简洁的回答。', 'gpt-3.5-turbo', 0.7, 2000, 1, '1', now());
-
 -- 插入标签数据 (文章分类标签 tag_type=1)
 INSERT INTO `tb_tag` (id, tag_id, name, color, description, tag_type, creator, create_time) VALUES
 ('tag001', 'tag_article_001', '党史学习', '#ff6b6b', '党史学习相关文章', 1, '1', now()),

schoolNewsServ/ai/pom.xml

@@ -27,6 +27,11 @@
             <artifactId>api-ai</artifactId>
             <version>${school-news.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.xyzh</groupId>
+            <artifactId>api-file</artifactId>
+            <version>${school-news.version}</version>
+        </dependency>
         
         <dependency>
             <groupId>org.xyzh</groupId>

schoolNewsServ/ai/src/main/java/org/xyzh/ai/client/DifyApiClient.java

@@ -1,7 +1,7 @@
 package org.xyzh.ai.client;
 
-import com.fasterxml.jackson.databind.JsonNode;
+import com.alibaba.fastjson2.JSON;
-import com.fasterxml.jackson.databind.ObjectMapper;
+import com.alibaba.fastjson2.JSONObject;
 
 import jakarta.annotation.PostConstruct;
 import okhttp3.*;
@@ -13,6 +13,7 @@ import org.xyzh.ai.client.dto.*;
 import org.xyzh.ai.client.callback.StreamCallback;
 import org.xyzh.ai.config.DifyConfig;
 import org.xyzh.ai.exception.DifyException;
+import org.xyzh.api.ai.dto.DifyFileInfo;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -37,7 +38,6 @@ public class DifyApiClient {
 
     private OkHttpClient httpClient;
     private OkHttpClient streamHttpClient;
-    private final ObjectMapper objectMapper = new ObjectMapper();
 
     @PostConstruct
     public void init() {
@@ -69,7 +69,7 @@ public class DifyApiClient {
         String url = difyConfig.getFullApiUrl("/datasets");
 
         try {
-            String jsonBody = objectMapper.writeValueAsString(request);
+            String jsonBody = JSON.toJSONString(request);
             Request httpRequest = new Request.Builder()
                     .url(url)
                     .header("Authorization", "Bearer " + getApiKey(apiKey))
@@ -85,7 +85,7 @@ public class DifyApiClient {
                     throw new DifyException("创建知识库失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, DatasetCreateResponse.class);
+                return JSON.parseObject(responseBody, DatasetCreateResponse.class);
             }
         } catch (IOException e) {
             logger.error("创建知识库异常", e);
@@ -114,7 +114,7 @@ public class DifyApiClient {
                     throw new DifyException("查询知识库列表失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, DatasetListResponse.class);
+                return JSON.parseObject(responseBody, DatasetListResponse.class);
             }
         } catch (IOException e) {
             logger.error("查询知识库列表异常", e);
@@ -143,7 +143,7 @@ public class DifyApiClient {
                     throw new DifyException("查询知识库详情失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, DatasetDetailResponse.class);
+                return JSON.parseObject(responseBody, DatasetDetailResponse.class);
             }
         } catch (IOException e) {
             logger.error("查询知识库详情异常", e);
@@ -159,7 +159,7 @@ public class DifyApiClient {
         String url = difyConfig.getFullApiUrl("/datasets/" + datasetId);
 
         try {
-            String jsonBody = objectMapper.writeValueAsString(request);
+            String jsonBody = JSON.toJSONString(request);
             Request httpRequest = new Request.Builder()
                     .url(url)
                     .header("Authorization", "Bearer " + getApiKey(apiKey))
@@ -207,6 +207,48 @@ public class DifyApiClient {
         }
     }
 
+    // ===================== 对话文件上传 API =====================
+    
+    /**
+     * 上传文件用于对话（图文多模态）
+     * @param file 文件
+     * @param originalFilename 原始文件名
+     * @param user 用户标识
+     * @param apiKey API密钥
+     * @return 文件信息（包含id、name、size等）
+     */
+    public DifyFileInfo uploadFileForChat(File file, String originalFilename, String user, String apiKey) {
+        String url = difyConfig.getFullApiUrl("/files/upload");
+        
+        try {
+            MultipartBody.Builder bodyBuilder = new MultipartBody.Builder()
+                    .setType(MultipartBody.FORM)
+                    .addFormDataPart("file", originalFilename,
+                            RequestBody.create(file, MediaType.parse("application/octet-stream")))
+                    .addFormDataPart("user", user);
+
+            Request httpRequest = new Request.Builder()
+                    .url(url)
+                    .header("Authorization", "Bearer " + getApiKey(apiKey))
+                    .post(bodyBuilder.build())
+                    .build();
+
+            try (Response response = httpClient.newCall(httpRequest).execute()) {
+                String responseBody = response.body() != null ? response.body().string() : "";
+                
+                if (!response.isSuccessful()) {
+                    logger.error("上传对话文件失败: {} - {}", response.code(), responseBody);
+                    throw new DifyException("上传对话文件失败: " + responseBody);
+                }
+
+                return JSON.parseObject(responseBody, DifyFileInfo.class);
+            }
+        } catch (IOException e) {
+            logger.error("上传对话文件异常", e);
+            throw new DifyException("上传对话文件异常: " + e.getMessage(), e);
+        }
+    }
+
     // ===================== 文档管理 API =====================
 
     /**
@@ -235,7 +277,7 @@ public class DifyApiClient {
                 bodyBuilder.addFormDataPart("indexing_technique", uploadRequest.getIndexingTechnique());
             }
             if (uploadRequest.getProcessRule() != null) {
-                bodyBuilder.addFormDataPart("process_rule", objectMapper.writeValueAsString(uploadRequest.getProcessRule()));
+                bodyBuilder.addFormDataPart("process_rule", JSON.toJSONString(uploadRequest.getProcessRule()));
             }
 
             Request httpRequest = new Request.Builder()
@@ -252,7 +294,7 @@ public class DifyApiClient {
                     throw new DifyException("上传文档失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, DocumentUploadResponse.class);
+                    return JSON.parseObject(responseBody, DocumentUploadResponse.class);
             }
         } catch (IOException e) {
             logger.error("上传文档异常", e);
@@ -281,7 +323,7 @@ public class DifyApiClient {
                     throw new DifyException("查询文档状态失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, DocumentStatusResponse.class);
+                return JSON.parseObject(responseBody, DocumentStatusResponse.class);
             }
         } catch (IOException e) {
             logger.error("查询文档状态异常", e);
@@ -310,7 +352,7 @@ public class DifyApiClient {
                     throw new DifyException("查询文档列表失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, DocumentListResponse.class);
+                return JSON.parseObject(responseBody, DocumentListResponse.class);
             }
         } catch (IOException e) {
             logger.error("查询文档列表异常", e);
@@ -354,7 +396,7 @@ public class DifyApiClient {
         String url = difyConfig.getFullApiUrl("/datasets/" + datasetId + "/retrieve");
 
         try {
-            String jsonBody = objectMapper.writeValueAsString(request);
+            String jsonBody = JSON.toJSONString(request);
             Request httpRequest = new Request.Builder()
                     .url(url)
                     .header("Authorization", "Bearer " + getApiKey(apiKey))
@@ -370,7 +412,7 @@ public class DifyApiClient {
                     throw new DifyException("知识库检索失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, RetrievalResponse.class);
+                return JSON.parseObject(responseBody, RetrievalResponse.class);
             }
         } catch (IOException e) {
             logger.error("知识库检索异常", e);
@@ -390,7 +432,7 @@ public class DifyApiClient {
             // 设置为流式模式
             request.setResponseMode("streaming");
             
-            String jsonBody = objectMapper.writeValueAsString(request);
+            String jsonBody = JSON.toJSONString(request);
             Request httpRequest = new Request.Builder()
                     .url(url)
                     .header("Authorization", "Bearer " + getApiKey(apiKey))
@@ -421,9 +463,9 @@ public class DifyApiClient {
                                 }
                                 
                                 if (!data.isEmpty()) {
-                                    // 解析SSE数据
+                                    // 使用Fastjson2解析SSE数据
-                                    JsonNode jsonNode = objectMapper.readTree(data);
+                                    JSONObject jsonNode = JSON.parseObject(data);
-                                    String event = jsonNode.has("event") ? jsonNode.get("event").asText() : "";
+                                    String event = jsonNode.containsKey("event") ? jsonNode.getString("event") : "";
                                     
                                     // 转发所有事件到回调（包含完整数据）
                                     callback.onEvent(event, data);
@@ -432,8 +474,8 @@ public class DifyApiClient {
                                         case "message":
                                         case "agent_message":
                                             // 消息内容
-                                            if (jsonNode.has("answer")) {
+                                            if (jsonNode.containsKey("answer")) {
-                                                callback.onMessage(jsonNode.get("answer").asText());
+                                                callback.onMessage(jsonNode.getString("answer"));
                                             }
                                             break;
                                         case "message_end":
@@ -442,8 +484,8 @@ public class DifyApiClient {
                                             break;
                                         case "error":
                                             // 错误事件
-                                            String errorMsg = jsonNode.has("message") ? 
+                                            String errorMsg = jsonNode.containsKey("message") ? 
-                                                jsonNode.get("message").asText() : "未知错误";
+                                                jsonNode.getString("message") : "未知错误";
                                             callback.onError(new DifyException(errorMsg));
                                             return;
                                         // 其他事件（workflow_started、node_started、node_finished等）
@@ -481,7 +523,7 @@ public class DifyApiClient {
             // 设置为阻塞模式
             request.setResponseMode("blocking");
             
-            String jsonBody = objectMapper.writeValueAsString(request);
+            String jsonBody = JSON.toJSONString(request);
             Request httpRequest = new Request.Builder()
                     .url(url)
                     .header("Authorization", "Bearer " + getApiKey(apiKey))
@@ -497,7 +539,7 @@ public class DifyApiClient {
                     throw new DifyException("阻塞式对话失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, ChatResponse.class);
+                return JSON.parseObject(responseBody, ChatResponse.class);
             }
         } catch (IOException e) {
             logger.error("阻塞式对话异常", e);
@@ -512,7 +554,7 @@ public class DifyApiClient {
         String url = difyConfig.getFullApiUrl("/chat-messages/" + taskId + "/stop");
 
         try {
-            String jsonBody = objectMapper.writeValueAsString(new StopRequest(userId));
+            String jsonBody = JSON.toJSONString(new StopRequest(userId));
             Request httpRequest = new Request.Builder()
                     .url(url)
                     .header("Authorization", "Bearer " + getApiKey(apiKey))
@@ -546,7 +588,7 @@ public class DifyApiClient {
 
         try {
             FeedbackRequest feedbackRequest = new FeedbackRequest(rating, userId, feedback);
-            String jsonBody = objectMapper.writeValueAsString(feedbackRequest);
+            String jsonBody = JSON.toJSONString(feedbackRequest);
             
             Request httpRequest = new Request.Builder()
                     .url(url)
@@ -614,7 +656,7 @@ public class DifyApiClient {
                     throw new DifyException("获取对话历史失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, MessageHistoryResponse.class);
+                return JSON.parseObject(responseBody, MessageHistoryResponse.class);
             }
         } catch (IOException e) {
             logger.error("获取对话历史异常", e);
@@ -656,7 +698,7 @@ public class DifyApiClient {
                     throw new DifyException("获取对话列表失败: " + responseBody);
                 }
 
-                return objectMapper.readValue(responseBody, ConversationListResponse.class);
+                return JSON.parseObject(responseBody, ConversationListResponse.class);
             }
         } catch (IOException e) {
             logger.error("获取对话列表异常", e);
@@ -710,7 +752,7 @@ public class DifyApiClient {
 
         try {
             String jsonBody = requestBody instanceof String ? 
-                    (String) requestBody : objectMapper.writeValueAsString(requestBody);
+                    (String) requestBody : JSON.toJSONString(requestBody);
             
             Request httpRequest = new Request.Builder()
                     .url(url)
@@ -747,7 +789,7 @@ public class DifyApiClient {
 
         try {
             String jsonBody = requestBody instanceof String ? 
-                    (String) requestBody : objectMapper.writeValueAsString(requestBody);
+                    (String) requestBody : JSON.toJSONString(requestBody);
             
             Request httpRequest = new Request.Builder()
                     .url(url)

schoolNewsServ/ai/src/main/java/org/xyzh/ai/client/dto/ChatRequest.java

@@ -2,6 +2,8 @@ package org.xyzh.ai.client.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.Data;
+import org.xyzh.api.ai.dto.DifyFileInfo;
+
 import java.util.List;
 import java.util.Map;
 
@@ -45,7 +47,7 @@ public class ChatRequest {
     /**
      * 上传的文件列表
      */
-    private List<FileInfo> files;
+    private List<DifyFileInfo> files;
 
     /**
      * 自动生成标题
@@ -70,29 +72,5 @@ public class ChatRequest {
     @JsonProperty("max_tokens")
     private Integer maxTokens;
 
-    @Data
-    public static class FileInfo {
-        /**
-         * 文件类型：image、document、audio、video
-         */
-        private String type;
-
-        /**
-         * 传输方式：remote_url、local_file
-         */
-        @JsonProperty("transfer_method")
-        private String transferMethod;
-
-        /**
-         * 文件URL或ID
-         */
-        private String url;
-
-        /**
-         * 本地文件上传ID
-         */
-        @JsonProperty("upload_file_id")
-        private String uploadFileId;
-    }
 }
 

schoolNewsServ/ai/src/main/java/org/xyzh/ai/config/DifyConfig.java

@@ -30,7 +30,8 @@ public class DifyConfig {
     /**
      * Dify API密钥（默认密钥，可被智能体的密钥覆盖）
      */
-    private String apiKey="app-PTHzp2DsLPyiUrDYTXBGxL1f";
+    // private String apiKey="app-PTHzp2DsLPyiUrDYTXBGxL1f";
+    private String apiKey="app-fwOqGFLTsZtekCQYlOmj9f8x";
 
     /**
      * 请求超时时间（秒）

schoolNewsServ/ai/src/main/java/org/xyzh/ai/controller/AiChatController.java

@@ -1,5 +1,6 @@
 package org.xyzh.ai.controller;
 
+import com.alibaba.fastjson2.JSON;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
@@ -10,12 +11,13 @@ import org.xyzh.api.ai.history.AiChatHistoryService;
 import org.xyzh.common.core.domain.ResultDomain;
 import org.xyzh.common.core.page.PageDomain;
 import org.xyzh.common.core.page.PageParam;
+import org.xyzh.api.ai.dto.DifyFileInfo;
 import org.xyzh.common.dto.ai.TbAiConversation;
 import org.xyzh.common.dto.ai.TbAiMessage;
 
-import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 /**
  * @description AI对话控制器
@@ -38,35 +40,55 @@ public class AiChatController {
     // ===================== 对话相关 =====================
 
     /**
-     * @description 流式对话（SSE）
+     * @description 准备流式对话会话（POST接收复杂参数）
-     * @param agentId 智能体ID
+     * @param requestBody 请求体（agentId, conversationId, query, files）
-     * @param conversationId 会话ID
+     * @return ResultDomain<String> 返回sessionId
-     * @param query 用户问题
-     * @param knowledgeIds 知识库ID列表（逗号分隔）
-     * @return SseEmitter SSE流式推送对象
      * @author AI Assistant
-     * @since 2025-11-04
+     * @since 2025-11-06
      */
-    @GetMapping(value = "/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
+    @PostMapping("/stream/prepare")
-    public SseEmitter streamChat(
+    public ResultDomain<String> prepareStreamChat(@RequestBody Map<String, Object> requestBody) {
-            @RequestParam(name = "agentId") String agentId,
+        String agentId = (String) requestBody.get("agentId");
-            @RequestParam(name = "conversationId", required = false) String conversationId,
+        String conversationId = (String) requestBody.get("conversationId");
-            @RequestParam(name = "query") String query,
+        String query = (String) requestBody.get("query");
-            @RequestParam(name = "knowledgeIds", required = false) String knowledgeIds) {
         
-        // 解析knowledgeIds
+        // 转换 files 数据
-        List<String> knowledgeIdList = null;
+        @SuppressWarnings("unchecked")
-        if (knowledgeIds != null && !knowledgeIds.isEmpty()) {
+        List<Map<String, Object>> filesRaw = (List<Map<String, Object>>) requestBody.get("files");
-            knowledgeIdList = Arrays.asList(knowledgeIds.split(","));
+        
+        List<DifyFileInfo> filesData = null;
+        if (filesRaw != null && !filesRaw.isEmpty()) {
+            filesData = filesRaw.stream()
+                    .map(fileMap -> {
+                        // 使用Fastjson2转换Map为对象
+                        String json = JSON.toJSONString(fileMap);
+                        return JSON.parseObject(json, DifyFileInfo.class);
+                    })
+                    .collect(Collectors.toList());
         }
         
-        log.info("流式对话: agentId={}, conversationId={}, query={}", agentId, conversationId, query);
+        log.info("准备流式对话会话: agentId={}, query={}, files={}", 
-        return chatService.streamChatWithSse(agentId, conversationId, query, knowledgeIdList);
+                agentId, query, filesData != null ? filesData.size() : 0);
+
+        return chatService.prepareChatSession(agentId, conversationId, query, filesData);
+    }
+
+    /**
+     * @description 流式对话（SSE）- GET建立SSE连接
+     * @param sessionId 会话标识
+     * @return SseEmitter SSE流式推送对象
+     * @author AI Assistant
+     * @since 2025-11-06
+     */
+    @GetMapping(value = "/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
+    public SseEmitter streamChat(@RequestParam(name = "sessionId") String sessionId) {
+        log.info("建立SSE连接: sessionId={}", sessionId);
+        return chatService.streamChatWithSse(sessionId);
     }
 
     /**
      * @description 阻塞式对话
-     * @param requestBody 请求体（agentId, conversationId, query, knowledgeIds）
+     * @param requestBody 请求体（agentId, conversationId, query）
      * @return ResultDomain<TbAiMessage>
      * @author AI Assistant
      * @since 2025-11-04
@@ -76,11 +98,8 @@ public class AiChatController {
         String agentId = (String) requestBody.get("agentId");
         String conversationId = (String) requestBody.get("conversationId");
         String query = (String) requestBody.get("query");
-        @SuppressWarnings("unchecked")
-        List<String> knowledgeIds = (List<String>) requestBody.get("knowledgeIds");
-        
         log.info("阻塞式对话: agentId={}, conversationId={}, query={}", agentId, conversationId, query);
-        return chatService.blockingChat(agentId, conversationId, query, knowledgeIds);
+        return chatService.blockingChat(agentId, conversationId, query);
     }
 
     

schoolNewsServ/ai/src/main/java/org/xyzh/ai/controller/AiFileUploadController.java

@@ -29,6 +29,22 @@ public class AiFileUploadController {
     @Autowired
     private AiUploadFileService uploadFileService;
 
+    /**
+     * @description 上传文件用于对话（图文多模态）
+     * @param file 文件
+     * @param agentId 智能体ID
+     * @return ResultDomain<Map<String, Object>> 返回Dify文件信息
+     * @author AI Assistant
+     * @since 2025-11-06
+     */
+    @PostMapping("/upload-for-chat")
+    public ResultDomain<java.util.Map<String, Object>> uploadFileForChat(
+            @RequestParam("file") MultipartFile file,
+            @RequestParam("agentId") String agentId) {
+        log.info("上传对话文件: fileName={}, agentId={}", file.getOriginalFilename(), agentId);
+        return uploadFileService.uploadFileForChat(file, agentId);
+    }
+
     /**
      * @description 上传文件到知识库
      * @param knowledgeId 知识库ID
@@ -78,6 +94,19 @@ public class AiFileUploadController {
         return uploadFileService.getFileById(fileId);
     }
 
+    /**
+     * @description 查询消息关联的文件列表
+     * @param messageId 消息ID
+     * @return ResultDomain<TbAiUploadFile>
+     * @author AI Assistant
+     * @since 2025-11-06
+     */
+    @GetMapping("/message/{messageId}")
+    public ResultDomain<TbAiUploadFile> getMessageFiles(@PathVariable(name = "messageId") String messageId) {
+        log.info("查询消息文件列表: messageId={}", messageId);
+        return uploadFileService.listFilesByMessageId(messageId);
+    }
+
     /**
      * @description 查询知识库的文件列表
      * @param knowledgeId 知识库ID

schoolNewsServ/ai/src/main/java/org/xyzh/ai/mapper/AiUploadFileMapper.java

@@ -68,4 +68,18 @@ public interface AiUploadFileMapper extends BaseMapper<TbAiUploadFile> {
      * @since 2025-10-15
      */
     List<TbAiUploadFile> selectAiUploadFiles(TbAiUploadFile filter);
+    
+    /**
+     * 根据消息ID查询关联的文件列表
+     * @param messageId 消息ID
+     * @return List<TbAiUploadFile> 文件列表
+     */
+    List<TbAiUploadFile> selectFilesByMessageId(@Param("messageId") String messageId);
+    
+    /**
+     * 批量插入文件记录
+     * @param files 文件列表
+     * @return 插入行数
+     */
+    int batchInsertUploadFiles(@Param("files") List<TbAiUploadFile> files);
 }

schoolNewsServ/ai/src/main/java/org/xyzh/ai/service/AiKnowledgeRedisService.java

@@ -0,0 +1,25 @@
+package org.xyzh.ai.service;
+
+import java.util.List;
+
+/**
+ * @description AI知识库Redis管理服务接口
+ * @filename AiKnowledgeRedisService.java
+ * @author AI Assistant
+ * @copyright xyzh
+ * @since 2025-11-06
+ */
+public interface AiKnowledgeRedisService {
+
+    /**
+     * 初始化所有知识库到Redis
+     * 在系统启动时调用
+     */
+    void initializeAllKnowledgeToRedis();
+
+    /**
+     * 清除所有知识库配置
+     */
+    void clearAllKnowledgeConfig();
+}
+

schoolNewsServ/ai/src/main/java/org/xyzh/ai/service/impl/AiAgentConfigServiceImpl.java

@@ -76,17 +76,6 @@ public class AiAgentConfigServiceImpl implements AiAgentConfigService {
                 agentConfig.setStatus(1); // 默认启用
             }
 
-            // 设置默认模型参数
-            if (agentConfig.getTemperature() == null) {
-                agentConfig.setTemperature(new BigDecimal("0.7"));
-            }
-            if (agentConfig.getMaxTokens() == null) {
-                agentConfig.setMaxTokens(2000);
-            }
-            if (agentConfig.getTopP() == null) {
-                agentConfig.setTopP(new BigDecimal("1.0"));
-            }
-
             // 5. 插入数据库
             int rows = agentConfigMapper.insertAgentConfig(agentConfig);
             if (rows > 0) {

schoolNewsServ/ai/src/main/java/org/xyzh/ai/service/impl/AiChatHistoryServiceImpl.java

@@ -1,7 +1,7 @@
 package org.xyzh.ai.service.impl;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
+import com.alibaba.fastjson2.JSON;
-import com.fasterxml.jackson.databind.ObjectMapper;
+import com.alibaba.fastjson2.JSONWriter;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -38,8 +38,6 @@ public class AiChatHistoryServiceImpl implements AiChatHistoryService {
     @Autowired
     private AiMessageMapper messageMapper;
 
-    private final ObjectMapper objectMapper = new ObjectMapper();
-
     @Override
     public PageDomain<TbAiConversation> pageUserConversations(
             String agentId,
@@ -539,17 +537,13 @@ public class AiChatHistoryServiceImpl implements AiChatHistoryService {
             exportData.put("messages", messages);
             exportData.put("exportTime", new Date());
 
-            // 转JSON
+            // 使用Fastjson2转JSON（格式化输出）
-            String json = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(exportData);
+            String json = JSON.toJSONString(exportData, JSONWriter.Feature.PrettyFormat);
 
             log.info("导出会话JSON成功: {}", conversationId);
             resultDomain.success("导出成功", json);
             return resultDomain;
 
-        } catch (JsonProcessingException e) {
-            log.error("JSON序列化失败", e);
-            resultDomain.fail("导出失败: JSON序列化错误");
-            return resultDomain;
         } catch (Exception e) {
             log.error("导出会话JSON失败", e);
             resultDomain.fail("导出失败: " + e.getMessage());

schoolNewsServ/ai/src/main/java/org/xyzh/ai/service/impl/AiChatServiceImpl.java

@@ -1,7 +1,7 @@
 package org.xyzh.ai.service.impl;
 
-import com.fasterxml.jackson.databind.JsonNode;
+import com.alibaba.fastjson2.JSON;
-import com.fasterxml.jackson.databind.ObjectMapper;
+import com.alibaba.fastjson2.JSONObject;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -12,24 +12,31 @@ import org.xyzh.ai.client.DifyApiClient;
 import org.xyzh.ai.client.callback.StreamCallback;
 import org.xyzh.ai.client.dto.ChatRequest;
 import org.xyzh.ai.client.dto.ChatResponse;
-import org.xyzh.ai.config.DifyConfig;
 import org.xyzh.ai.exception.DifyException;
 import org.xyzh.ai.mapper.AiAgentConfigMapper;
 import org.xyzh.ai.mapper.AiConversationMapper;
 import org.xyzh.ai.mapper.AiMessageMapper;
+import org.xyzh.ai.mapper.AiUploadFileMapper;
+import org.xyzh.ai.service.AiKnowledgeRedisService;
 import org.xyzh.api.ai.chat.AiChatService;
+import org.xyzh.api.ai.dto.DifyFileInfo;
+import org.xyzh.common.core.domain.LoginDomain;
 import org.xyzh.common.core.domain.ResultDomain;
 import org.xyzh.common.dto.ai.TbAiAgentConfig;
 import org.xyzh.common.dto.ai.TbAiConversation;
 import org.xyzh.common.dto.ai.TbAiMessage;
+import org.xyzh.common.dto.ai.TbAiUploadFile;
 import org.xyzh.common.dto.user.TbSysUser;
+import org.xyzh.common.vo.UserDeptRoleVO;
 import org.xyzh.system.utils.LoginUtil;
+import org.springframework.data.redis.core.RedisTemplate;
 
 import java.io.IOException;
 import java.util.*;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;
 
 /**
@@ -56,20 +63,104 @@ public class AiChatServiceImpl implements AiChatService {
     private DifyApiClient difyApiClient;
 
     @Autowired
-    private DifyConfig difyConfig;
+    private AiKnowledgeRedisService knowledgeRedisService;
 
-    private final ObjectMapper objectMapper = new ObjectMapper();
+    @Autowired
+    private AiUploadFileMapper uploadFileMapper;
+
+    @Autowired
+    private RedisTemplate<String, Object> redisTemplate;
 
     // 异步任务线程池（用于异步生成摘要等后台任务）
     private final ExecutorService executorService = Executors.newFixedThreadPool(3);
     
+    // Redis会话key前缀
+    private static final String CHAT_SESSION_PREFIX = "chat:session:";
+
     @Override
-    public SseEmitter streamChatWithSse(String agentId, String conversationId, String query, List<String> knowledgeIds) {
+    public ResultDomain<String> prepareChatSession(String agentId, String conversationId, String query, List<DifyFileInfo> filesData) {
+        ResultDomain<String> resultDomain = new ResultDomain<>();
+        try {
+            // 参数验证
+            if (!StringUtils.hasText(agentId)) {
+                resultDomain.fail("智能体ID不能为空");
+                return resultDomain;
+            }
+            if (!StringUtils.hasText(query)) {
+                resultDomain.fail("问题不能为空");
+                return resultDomain;
+            }
+
+            // 生成sessionId
+            String sessionId = UUID.randomUUID().toString();
+            
+            // 构建会话数据
+            Map<String, Object> sessionData = new HashMap<>();
+            sessionData.put("agentId", agentId);
+            sessionData.put("conversationId", conversationId);
+            sessionData.put("query", query);
+            sessionData.put("filesData", filesData);
+            sessionData.put("createTime", System.currentTimeMillis());
+            
+            // 存入Redis，5分钟过期
+            String redisKey = CHAT_SESSION_PREFIX + sessionId;
+            redisTemplate.opsForValue().set(redisKey, sessionData, 5, TimeUnit.MINUTES);
+            
+            log.info("创建对话会话: sessionId={}, agentId={}", sessionId, agentId);
+            
+            resultDomain.success("会话创建成功", sessionId);
+            return resultDomain;
+        } catch (Exception e) {
+            log.error("创建对话会话失败", e);
+            resultDomain.fail("创建会话失败: " + e.getMessage());
+            return resultDomain;
+        }
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public SseEmitter streamChatWithSse(String sessionId) {
         // 创建SseEmitter，设置超时时间为5分钟
         SseEmitter emitter = new SseEmitter(5 * 60 * 1000L);
         
         try {
-            // 1. 参数验证
+            // 1. 从Redis获取并删除会话数据
+            String redisKey = CHAT_SESSION_PREFIX + sessionId;
+            Map<String, Object> sessionData = (Map<String, Object>) redisTemplate.opsForValue().get(redisKey);
+            
+            if (sessionData == null) {
+                emitter.send(SseEmitter.event().name("error").data("会话不存在或已过期"));
+                emitter.complete();
+                return emitter;
+            }
+            
+            // 删除Redis中的会话数据（一次性使用）
+            redisTemplate.delete(redisKey);
+
+            String agentId = (String) sessionData.get("agentId");
+            String conversationId = (String) sessionData.get("conversationId");
+            String query = (String) sessionData.get("query");
+            
+            // 转换文件数据
+            List<DifyFileInfo> filesData = null;
+            Object filesObj = sessionData.get("filesData");
+            if (filesObj != null) {
+                if (filesObj instanceof List) {
+                    filesData = new ArrayList<>();
+                    for (Object fileObj : (List<?>) filesObj) {
+                        if (fileObj instanceof Map) {
+                            // 使用Fastjson2转换Map为对象
+                            String json = JSON.toJSONString(fileObj);
+                            DifyFileInfo fileInfo = JSON.parseObject(json, DifyFileInfo.class);
+                            filesData.add(fileInfo);
+                        } else if (fileObj instanceof DifyFileInfo) {
+                            filesData.add((DifyFileInfo) fileObj);
+                        }
+                    }
+                }
+            }
+
+            // 2. 参数验证
             if (!StringUtils.hasText(agentId)) {
                 emitter.send(SseEmitter.event().name("error").data("智能体ID不能为空"));
                 emitter.complete();
@@ -118,7 +209,7 @@ public class AiChatServiceImpl implements AiChatService {
                 }
             } else {
                 // 创建新会话
-                ResultDomain<TbAiConversation> createResult = createConversation(agentId, null);
+                ResultDomain<TbAiConversation> createResult = createConversation(agentId, query.substring(0, 20));
                 if (!createResult.isSuccess()) {
                     emitter.send(SseEmitter.event().name("error").data(createResult.getMessage()));
                     emitter.complete();
@@ -131,7 +222,8 @@ public class AiChatServiceImpl implements AiChatService {
 
             // 5. 创建用户消息记录
             TbAiMessage userMessage = new TbAiMessage();
-            userMessage.setID(UUID.randomUUID().toString());
+            String userMessageId = UUID.randomUUID().toString();
+            userMessage.setID(userMessageId);
             userMessage.setConversationID(finalConversationId);
             userMessage.setAgentID(agentId);
             userMessage.setRole("user");
@@ -140,10 +232,39 @@ public class AiChatServiceImpl implements AiChatService {
             userMessage.setUpdateTime(new Date());
             userMessage.setDeleted(false);
             userMessage.setUserID(currentUser.getID());
+            
+            // 处理文件关联（将文件ID列表转换为JSON数组保存）
+            if (filesData != null && !filesData.isEmpty()) {
+                try {
+                    // 提取系统文件ID列表（从前端传来的sysFileId）
+                    List<String> sysFileIds = new ArrayList<>();
+                    for (DifyFileInfo fileInfo : filesData) {
+                        // 使用sysFileId字段
+                        if (fileInfo.getSysFileId() != null) {
+                            sysFileIds.add(fileInfo.getSysFileId());
+                        }
+                    }
+                    if (!sysFileIds.isEmpty()) {
+                        // 使用Fastjson2序列化为JSON字符串
+                        userMessage.setFileIDs(JSON.toJSONString(sysFileIds));
+                    }
+                } catch (Exception e) {
+                    log.warn("保存文件ID列表失败", e);
+                }
+            }
+            
             messageMapper.insertMessage(userMessage);
             
+            // 6. 保存文件关联记录到tb_ai_upload_file
+            if (filesData != null && !filesData.isEmpty()) {
+                saveMessageFileRecords(userMessageId, finalConversationId, currentUser.getID(), filesData);
+            }
+
             // 注意：AI消息记录将在获取到Dify的task_id后创建
 
+            // 6. 从Redis获取当前用户可访问的知识库ID列表
+            List<String> knowledgeIds = getKnowledgeIdsByUser(currentUser);
+
             // 7. 构建Dify请求
             ChatRequest chatRequest = new ChatRequest();
             chatRequest.setQuery(query);
@@ -152,15 +273,18 @@ public class AiChatServiceImpl implements AiChatService {
             if (StringUtils.hasText(conversation.getDifyConversationId())) {
                 chatRequest.setConversationId(conversation.getDifyConversationId());
             }
+            
+            // 设置知识库ID列表（从Redis获取）
             if (knowledgeIds != null && !knowledgeIds.isEmpty()) {
                 chatRequest.setDatasetIds(knowledgeIds);
+                log.info("使用知识库: {}", knowledgeIds);
             }
 
-            chatRequest.setTemperature(agent.getTemperature() != null ? 
+            chatRequest.setResponseMode("streaming");
-                agent.getTemperature().doubleValue() : difyConfig.getChat().getDefaultTemperature());
+            Map<String, Object> inputs = new HashMap<>();
-            chatRequest.setMaxTokens(agent.getMaxTokens() != null ? 
+            inputs.put("connectInternet", agent.getConnectInternet());
-                agent.getMaxTokens() : difyConfig.getChat().getDefaultMaxTokens());
+            chatRequest.setInputs(inputs);
-
+            chatRequest.setFiles(filesData);
             // 6. 调用Dify流式对话
             final TbAiConversation finalConversation = conversation;
             StringBuilder fullAnswer = new StringBuilder();
@@ -194,13 +318,13 @@ public class AiChatServiceImpl implements AiChatService {
                         return; // 已停止，不再处理
                     }
                     try {
-                        // 解析metadata
+                        // 使用Fastjson2解析metadata
-                        JsonNode json = objectMapper.readTree(metadata);
+                        JSONObject json = JSON.parseObject(metadata);
-                        if (json.has("conversation_id")) {
+                        if (json.containsKey("conversation_id")) {
-                            difyConversationId.set(json.get("conversation_id").asText());
+                            difyConversationId.set(json.getString("conversation_id"));
                         }
-                        if (json.has("id")) {
+                        if (json.containsKey("id")) {
-                            difyMessageId.set(json.get("id").asText());
+                            difyMessageId.set(json.getString("id"));
                         }
 
                         // 更新AI消息内容（使用task_id作为消息ID）
@@ -247,9 +371,9 @@ public class AiChatServiceImpl implements AiChatService {
                         
                         // 如果还没有创建消息记录，尝试从任何事件中提取task_id
                         if (!messageCreated.get()) {
-                            JsonNode json = objectMapper.readTree(eventData);
+                            JSONObject json = JSON.parseObject(eventData);
-                            if (json.has("task_id")) {
+                            if (json.containsKey("task_id")) {
-                                String difyTaskId = json.get("task_id").asText();
+                                String difyTaskId = json.getString("task_id");
                                 
                                 // 只有在taskId为空时才设置并创建消息
                                 if (taskId.get() == null) {
@@ -363,9 +487,7 @@ public class AiChatServiceImpl implements AiChatService {
     public ResultDomain<TbAiMessage> blockingChat(
             String agentId,
             String conversationId,
-            String query,
+            String query){
-            List<String> knowledgeIds) {
-
         ResultDomain<TbAiMessage> resultDomain = new ResultDomain<>();
 
         try {
@@ -426,21 +548,12 @@ public class AiChatServiceImpl implements AiChatService {
             if (StringUtils.hasText(conversation.getDifyConversationId())) {
                 chatRequest.setConversationId(conversation.getDifyConversationId());
             }
-            if (knowledgeIds != null && !knowledgeIds.isEmpty()) {
-                chatRequest.setDatasetIds(knowledgeIds);
-            }
 
-            if (agent.getTemperature() != null) {
+            chatRequest.setResponseMode("blocking");
-                chatRequest.setTemperature(agent.getTemperature().doubleValue());
+            Map<String, Object> inputs = new HashMap<>();
-            } else {
+            inputs.put("connectInternet", agent.getConnectInternet());
-                chatRequest.setTemperature(difyConfig.getChat().getDefaultTemperature());
+            chatRequest.setInputs(inputs);
-            }
+            chatRequest.setFiles(null);
-            
-            if (agent.getMaxTokens() != null) {
-                chatRequest.setMaxTokens(agent.getMaxTokens());
-            } else {
-                chatRequest.setMaxTokens(difyConfig.getChat().getDefaultMaxTokens());
-            }
 
             // 调用Dify阻塞式对话
             ChatResponse chatResponse = difyApiClient.blockingChat(chatRequest, agent.getDifyApiKey());
@@ -809,7 +922,7 @@ public class AiChatServiceImpl implements AiChatService {
             TbAiMessage userQuestion = null;
             for (int i = messages.size() - 1; i >= 0; i--) {
                 if ("user".equals(messages.get(i).getRole()) && 
-                    messages.get(i).getCreateTime().before(originalMessage.getCreateTime())) {
+                    !messages.get(i).getCreateTime().after(originalMessage.getCreateTime())) {
                     userQuestion = messages.get(i);
                     break;
                 }
@@ -821,13 +934,23 @@ public class AiChatServiceImpl implements AiChatService {
                 return emitter;
             }
 
-            // 直接返回streamChatWithSse的结果
+            // 重新生成：创建临时session并调用新的streamChatWithSse
-            return streamChatWithSse(
+            String sessionId = UUID.randomUUID().toString();
-                    originalMessage.getAgentID(),
+            
-                    originalMessage.getConversationID(),
+            // 构建会话数据
-                    userQuestion.getContent(),
+            Map<String, Object> sessionData = new HashMap<>();
-                    null
+            sessionData.put("agentId", originalMessage.getAgentID());
-            );
+            sessionData.put("conversationId", originalMessage.getConversationID());
+            sessionData.put("query", userQuestion.getContent());
+            sessionData.put("filesData", null);  // 重新生成不需要传文件
+            sessionData.put("createTime", System.currentTimeMillis());
+            
+            // 存入Redis，5分钟过期
+            String redisKey = CHAT_SESSION_PREFIX + sessionId;
+            redisTemplate.opsForValue().set(redisKey, sessionData, 5, TimeUnit.MINUTES);
+            
+            log.info("重新生成回答: messageId={}, sessionId={}", messageId, sessionId);
+            return streamChatWithSse(sessionId);
             
         } catch (Exception e) {
             log.error("重新生成回答异常", e);
@@ -971,5 +1094,91 @@ public class AiChatServiceImpl implements AiChatService {
             return resultDomain;
         }
     }
+
+    /**
+     * 保存消息关联的文件记录
+     * @param messageId 消息ID
+     * @param conversationId 会话ID
+     * @param userId 用户ID
+     * @param filesData 文件数据列表
+     */
+    private void saveMessageFileRecords(String messageId, String conversationId, String userId, List<DifyFileInfo> filesData) {
+        try {
+            List<TbAiUploadFile> fileRecords = new ArrayList<>();
+            Date now = new Date();
+            
+            for (DifyFileInfo fileInfo : filesData) {
+                TbAiUploadFile uploadFile = new TbAiUploadFile();
+                uploadFile.setID(UUID.randomUUID().toString());
+                uploadFile.setUserID(userId);
+                uploadFile.setConversationID(conversationId);
+                uploadFile.setMessageID(messageId);  // 绑定到消息
+                
+                // 从文件信息中提取系统文件ID（前端传递sys_file_id字段）
+                uploadFile.setSysFileId(fileInfo.getSysFileId());
+                
+                uploadFile.setFileName(fileInfo.getName());
+                uploadFile.setFilePath(fileInfo.getFilePath() != null ? fileInfo.getFilePath() : "");  // 从系统文件表获取的文件路径
+                uploadFile.setFileSize(fileInfo.getSize() != null ? fileInfo.getSize().longValue() : 0L);
+                uploadFile.setFileType(fileInfo.getExtension());
+                uploadFile.setMimeType(fileInfo.getMimeType());
+                uploadFile.setDifyUploadFileId(fileInfo.getUploadFileId());  // Dify的上传文件ID
+                uploadFile.setStatus(2);  // 已完成（对话文件直接可用）
+                uploadFile.setCreateTime(now);
+                uploadFile.setUpdateTime(now);
+                uploadFile.setDeleted(false);
+                
+                fileRecords.add(uploadFile);
+            }
+            
+            if (!fileRecords.isEmpty()) {
+                uploadFileMapper.batchInsertUploadFiles(fileRecords);
+                log.info("消息文件记录已保存: messageId={}, fileCount={}", messageId, fileRecords.size());
+            }
+        } catch (Exception e) {
+            log.error("保存消息文件记录失败: messageId={}", messageId, e);
+            // 不抛出异常，不影响主流程
+        }
+    }
+    
+    /**
+     * 根据用户获取可访问的知识库ID列表（基于部门路径）
+     * @param user 当前用户
+     * @return 知识库ID列表
+     */
+    private List<String> getKnowledgeIdsByUser(TbSysUser user) {
+        try {
+            // 获取当前登录用户的完整信息（包含部门角色列表）
+            LoginDomain loginDomain = LoginUtil.getCurrentLoginDomain();
+            if (loginDomain == null || loginDomain.getRoles() == null || loginDomain.getRoles().isEmpty()) {
+                log.warn("用户 {} 没有部门角色信息，返回空知识库列表", user.getID());
+                return null;
+            }
+
+            // 获取用户的第一个部门角色（通常用户属于一个主部门）
+            UserDeptRoleVO userRole = loginDomain.getRoles().get(0);
+            String deptPath = userRole.getDeptPath();
+            
+            if (deptPath == null || deptPath.isEmpty()) {
+                log.warn("用户 {} 的部门路径为空，返回空知识库列表", user.getID());
+                return null;
+            }
+
+            // 根据部门路径获取知识库ID列表（包含父部门的知识库）
+            List<String> knowledgeIds = ((AiKnowledgeRedisServiceImpl) knowledgeRedisService).getKnowledgeIdsByDeptPath(deptPath);
+            
+            if (knowledgeIds == null || knowledgeIds.isEmpty()) {
+                log.warn("用户 {} 所在部门路径 {} 没有关联的知识库", user.getID(), deptPath);
+                return null;
+            }
+
+            log.info("用户 {} 从部门路径 {} 获取到 {} 个知识库", user.getID(), deptPath, knowledgeIds.size());
+            return knowledgeIds;
+
+        } catch (Exception e) {
+            log.error("根据用户获取知识库ID失败: userId={}", user.getID(), e);
+            return null;
+        }
+    }
 }
 

schoolNewsServ/ai/src/main/java/org/xyzh/ai/service/impl/AiKnowledgeRedisServiceImpl.java

@@ -0,0 +1,170 @@
+package org.xyzh.ai.service.impl;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Service;
+import org.xyzh.ai.mapper.AiKnowledgeMapper;
+import org.xyzh.ai.service.AiKnowledgeRedisService;
+import org.xyzh.common.dto.ai.TbAiKnowledge;
+
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @description AI知识库Redis管理服务实现类
+ * @filename AiKnowledgeRedisServiceImpl.java
+ * @author AI Assistant
+ * @copyright xyzh
+ * @since 2025-11-06
+ */
+@Slf4j
+@Service
+public class AiKnowledgeRedisServiceImpl implements AiKnowledgeRedisService, CommandLineRunner {
+
+    @Autowired
+    private RedisTemplate<String, Object> redisTemplate;
+
+    @Autowired
+    private AiKnowledgeMapper knowledgeMapper;
+
+    // Redis Key前缀：ai:dept:knowledge:{deptId}
+    private static final String REDIS_KEY_DEPT_KNOWLEDGE = "ai:dept:knowledge:";
+
+    // Redis过期时间（7天）
+    private static final long REDIS_EXPIRE_DAYS = 7;
+
+    /**
+     * 系统启动时自动初始化
+     */
+    @Override
+    public void run(String... args) throws Exception {
+        log.info("=== 开始初始化知识库到Redis ===");
+        initializeAllKnowledgeToRedis();
+        log.info("=== 知识库初始化完成 ===");
+    }
+
+    @Override
+    public void initializeAllKnowledgeToRedis() {
+        try {
+            // 查询所有已同步到Dify的知识库
+            List<TbAiKnowledge> allKnowledges = knowledgeMapper.selectAllKnowledges(new TbAiKnowledge());
+            
+            // 按部门分组知识库
+            Map<String, List<String>> deptKnowledgeMap = new HashMap<>();
+            
+            for (TbAiKnowledge knowledge : allKnowledges) {
+                // 只处理已同步到Dify且未删除的知识库
+                if (knowledge.getDifyDatasetId() != null && !knowledge.getDifyDatasetId().isEmpty() 
+                        && !knowledge.getDeleted()) {
+                    
+                    String deptId = knowledge.getCreatorDept();
+                    if (deptId == null || deptId.isEmpty()) {
+                        log.warn("知识库 {} 没有部门信息，跳过", knowledge.getID());
+                        continue;
+                    }
+                    
+                    // 将知识库添加到对应部门的列表中
+                    deptKnowledgeMap.computeIfAbsent(deptId, k -> new ArrayList<>())
+                            .add(knowledge.getDifyDatasetId());
+                }
+            }
+
+            if (deptKnowledgeMap.isEmpty()) {
+                log.warn("未找到已同步到Dify且有部门信息的知识库");
+                return;
+            }
+
+            // 为每个部门设置知识库
+            int totalCount = 0;
+            for (Map.Entry<String, List<String>> entry : deptKnowledgeMap.entrySet()) {
+                String deptId = entry.getKey();
+                List<String> knowledgeIds = entry.getValue();
+                setDeptKnowledgeIds(deptId, knowledgeIds);
+                totalCount += knowledgeIds.size();
+                log.info("已设置部门 {} 的知识库，共 {} 个", deptId, knowledgeIds.size());
+            }
+            
+            log.info("知识库初始化完成，共 {} 个部门，{} 个知识库", deptKnowledgeMap.size(), totalCount);
+
+        } catch (Exception e) {
+            log.error("初始化知识库到Redis失败", e);
+        }
+    }
+
+    /**
+     * 设置部门的知识库ID列表
+     */
+    public void setDeptKnowledgeIds(String deptId, List<String> knowledgeIds) {
+        try {
+            String key = REDIS_KEY_DEPT_KNOWLEDGE + deptId;
+            redisTemplate.opsForValue().set(key, knowledgeIds, REDIS_EXPIRE_DAYS, TimeUnit.DAYS);
+            log.debug("已设置部门 {} 的知识库: {}", deptId, knowledgeIds);
+        } catch (Exception e) {
+            log.error("设置部门知识库失败: deptId={}", deptId, e);
+        }
+    }
+
+    /**
+     * 根据部门路径获取知识库ID列表（包含父部门的知识库）
+     * @param deptPath 部门路径，例如：/1/3/5/
+     * @return 知识库ID列表（已去重）
+     */
+    @SuppressWarnings("unchecked")
+    public List<String> getKnowledgeIdsByDeptPath(String deptPath) {
+        Set<String> knowledgeIdSet = new HashSet<>();
+        
+        try {
+            if (deptPath == null || deptPath.isEmpty()) {
+                log.warn("部门路径为空，返回空知识库列表");
+                return new ArrayList<>();
+            }
+
+            // 解析部门路径，例如：/1/3/5/ -> [1, 3, 5]
+            String[] deptIds = deptPath.split("/");
+            List<String> deptIdList = new ArrayList<>();
+            for (String deptId : deptIds) {
+                if (deptId != null && !deptId.isEmpty()) {
+                    deptIdList.add(deptId);
+                }
+            }
+
+            if (deptIdList.isEmpty()) {
+                log.warn("解析部门路径失败: {}", deptPath);
+                return new ArrayList<>();
+            }
+
+            // 依次查询当前部门及所有父部门的知识库
+            for (String deptId : deptIdList) {
+                String key = REDIS_KEY_DEPT_KNOWLEDGE + deptId;
+                Object result = redisTemplate.opsForValue().get(key);
+                if (result != null) {
+                    List<String> deptKnowledgeIds = (List<String>) result;
+                    knowledgeIdSet.addAll(deptKnowledgeIds);
+                    log.debug("从部门 {} 获取到 {} 个知识库", deptId, deptKnowledgeIds.size());
+                }
+            }
+
+            List<String> resultList = new ArrayList<>(knowledgeIdSet);
+            log.info("根据部门路径 {} 获取到 {} 个知识库（已去重）", deptPath, resultList.size());
+            return resultList;
+
+        } catch (Exception e) {
+            log.error("根据部门路径获取知识库失败: deptPath={}", deptPath, e);
+            return new ArrayList<>();
+        }
+    }
+
+    @Override
+    public void clearAllKnowledgeConfig() {
+        try {
+            // 删除所有知识库相关的Redis Key
+            redisTemplate.delete(redisTemplate.keys(REDIS_KEY_DEPT_KNOWLEDGE + "*"));
+            log.info("已清除所有知识库配置");
+        } catch (Exception e) {
+            log.error("清除所有知识库配置失败", e);
+        }
+    }
+}
+

schoolNewsServ/ai/src/main/java/org/xyzh/ai/service/impl/AiUploadFileServiceImpl.java

@@ -8,19 +8,24 @@ import org.springframework.util.StringUtils;
 import org.springframework.web.multipart.MultipartFile;
 import org.xyzh.ai.client.DifyApiClient;
 import org.xyzh.ai.client.dto.DocumentStatusResponse;
+import org.xyzh.api.ai.dto.DifyFileInfo;
 import org.xyzh.ai.client.dto.DocumentUploadRequest;
 import org.xyzh.ai.client.dto.DocumentUploadResponse;
 import org.xyzh.ai.config.DifyConfig;
 import org.xyzh.ai.exception.DifyException;
 import org.xyzh.ai.exception.FileProcessException;
+import org.xyzh.ai.mapper.AiAgentConfigMapper;
 import org.xyzh.ai.mapper.AiKnowledgeMapper;
 import org.xyzh.ai.mapper.AiUploadFileMapper;
 import org.xyzh.api.ai.file.AiUploadFileService;
+import org.xyzh.api.file.FileService;
 import org.xyzh.common.core.domain.ResultDomain;
 import org.xyzh.common.core.page.PageDomain;
 import org.xyzh.common.core.page.PageParam;
+import org.xyzh.common.dto.ai.TbAiAgentConfig;
 import org.xyzh.common.dto.ai.TbAiKnowledge;
 import org.xyzh.common.dto.ai.TbAiUploadFile;
+import org.xyzh.common.dto.system.TbSysFile;
 import org.xyzh.common.dto.user.TbSysUser;
 import org.xyzh.system.utils.LoginUtil;
 
@@ -58,9 +63,119 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
     @Autowired
     private DifyConfig difyConfig;
 
+    @Autowired
+    private AiAgentConfigMapper agentConfigMapper;
+
+    @Autowired
+    private FileService fileService;
+
     // 异步处理线程池
     private final ExecutorService executorService = Executors.newFixedThreadPool(5);
 
+    @Override
+    public ResultDomain<Map<String, Object>> uploadFileForChat(MultipartFile file, String agentId) {
+        ResultDomain<Map<String, Object>> resultDomain = new ResultDomain<>();
+
+        try {
+            // 1. 参数验证
+            if (file == null || file.isEmpty()) {
+                resultDomain.fail("文件不能为空");
+                return resultDomain;
+            }
+            if (!StringUtils.hasText(agentId)) {
+                resultDomain.fail("智能体ID不能为空");
+                return resultDomain;
+            }
+
+            // 2. 获取当前用户
+            TbSysUser currentUser = LoginUtil.getCurrentUser();
+            if (currentUser == null) {
+                resultDomain.fail("用户未登录");
+                return resultDomain;
+            }
+
+            // 3. 验证文件类型和大小
+            String originalFilename = file.getOriginalFilename();
+            if (!isValidFileType(originalFilename)) {
+                resultDomain.fail("不支持的文件类型");
+                return resultDomain;
+            }
+
+            long maxSize = difyConfig.getUpload().getMaxSize() * 1024 * 1024; // MB转字节
+            if (file.getSize() > maxSize) {
+                resultDomain.fail("文件大小超过限制: " + (maxSize / 1024 / 1024) + "MB");
+                return resultDomain;
+            }
+
+            // 4. 获取智能体配置
+            TbAiAgentConfig agent = agentConfigMapper.selectAgentConfigById(agentId);
+            if (agent == null || agent.getDeleted()) {
+                resultDomain.fail("智能体不存在");
+                return resultDomain;
+            }
+
+            // 5. 先保存到系统文件表（永久存储）
+            ResultDomain<TbSysFile> uploadResult = fileService.uploadFile(
+                    file,
+                    "ai-agent", // 模块名
+                    agentId, // 业务ID（智能体ID）
+                    currentUser.getID() // 上传者
+            );
+
+            if (!uploadResult.isSuccess() || uploadResult.getData() == null) {
+                resultDomain.fail("保存文件失败: " + uploadResult.getMessage());
+                return resultDomain;
+            }
+
+            TbSysFile sysFile = (TbSysFile) uploadResult.getData();
+            log.info("文件已保存到系统文件表: sysFileId={}, fileName={}", sysFile.getID(), sysFile.getOriginalName());
+
+            // 6. 获取已保存文件的File对象，直接用于上传到Dify（不需要再保存临时文件）
+            File fileToUpload = fileService.getFileByRelativePath(sysFile.getFilePath());
+
+            try {
+                // 7. 调用Dify API上传文件
+                DifyFileInfo difyResponse = difyApiClient.uploadFileForChat(
+                        fileToUpload,
+                        originalFilename,
+                        currentUser.getID(),
+                        agent.getDifyApiKey());
+
+                // 9. 转换为前端需要的格式，包含系统文件ID和文件路径
+                Map<String, Object> fileInfo = new HashMap<>();
+                fileInfo.put("id", difyResponse.getId()); // Dify文件ID
+                fileInfo.put("sys_file_id", sysFile.getID()); // 系统文件ID（重要：用于关联消息）
+                fileInfo.put("file_path", sysFile.getFilePath()); // 文件路径（重要：用于保存记录）
+                fileInfo.put("name", difyResponse.getName());
+                fileInfo.put("size", difyResponse.getSize());
+                fileInfo.put("extension", difyResponse.getExtension());
+                fileInfo.put("mime_type", difyResponse.getMimeType());
+                fileInfo.put("type", getFileType(originalFilename));
+                fileInfo.put("transfer_method", "local_file");
+                fileInfo.put("upload_file_id", difyResponse.getId()); // Dify上传文件ID
+                fileInfo.put("file_url", sysFile.getFileUrl()); // 文件访问URL
+
+                log.info("对话文件上传成功: sysFileId={}, difyFileId={}", sysFile.getID(), difyResponse.getId());
+                resultDomain.success("文件上传成功", fileInfo);
+                return resultDomain;
+
+            } catch (DifyException e) {
+                log.error("上传文件到Dify失败", e);
+                resultDomain.fail("上传文件失败: " + e.getMessage());
+                return resultDomain;
+            } catch (Exception e) {
+                log.error("上传文件异常", e);
+                resultDomain.fail("上传文件异常: " + e.getMessage());
+                return resultDomain;
+            }
+
+        } catch (Exception e) {
+            log.error("文件上传处理异常", e);
+            resultDomain.fail("文件上传处理异常: " + e.getMessage());
+            return resultDomain;
+        }
+    }
+
     @Override
     @Transactional(rollbackFor = Exception.class)
     public ResultDomain<TbAiUploadFile> uploadToKnowledge(
@@ -113,15 +228,26 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
                 return resultDomain;
             }
 
-            // 5. 保存临时文件
+            // 5. 先保存到系统文件表（永久存储）
-            File tempFile = saveTempFile(file);
+            ResultDomain<TbSysFile> uploadResult = fileService.uploadFile(
-            if (tempFile == null) {
+                    file,
-                resultDomain.fail("保存临时文件失败");
+                    "ai-knowledge", // 模块名
+                    knowledgeId, // 业务ID（知识库ID）
+                    currentUser.getID() // 上传者
+            );
+
+            if (!uploadResult.isSuccess() || uploadResult.getData() == null) {
+                resultDomain.fail("保存文件失败: " + uploadResult.getMessage());
                 return resultDomain;
             }
 
-            try {
+            TbSysFile sysFile = (TbSysFile) uploadResult.getData();
-                // 6. 上传到Dify
+            log.info("文件已保存到系统文件表: sysFileId={}, fileName={}", sysFile.getID(), sysFile.getOriginalName());
+
+            // 6. 获取已保存文件的File对象，直接用于上传到Dify
+            File fileToUpload = fileService.getFileByRelativePath(sysFile.getFilePath());
+
+            // 7. 上传到Dify
             DocumentUploadRequest uploadRequest = new DocumentUploadRequest();
             uploadRequest.setName(originalFilename);
 
@@ -132,18 +258,19 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
 
             DocumentUploadResponse difyResponse = difyApiClient.uploadDocumentByFile(
                     knowledge.getDifyDatasetId(),
-                        tempFile,
+                    fileToUpload,
                     originalFilename,
                     uploadRequest,
-                        difyConfig.getApiKey()
+                    difyConfig.getApiKey());
-                );
 
-                // 7. 保存到本地数据库
+            // 8. 保存到本地数据库
             TbAiUploadFile uploadFile = new TbAiUploadFile();
             uploadFile.setID(UUID.randomUUID().toString());
+            uploadFile.setUserID(currentUser.getID());
             uploadFile.setKnowledgeId(knowledgeId);
+            uploadFile.setSysFileId(sysFile.getID()); // 关联系统文件ID
             uploadFile.setFileName(originalFilename);
-                uploadFile.setFilePath(tempFile.getAbsolutePath());
+            uploadFile.setFilePath(sysFile.getFilePath()); // 保存系统文件的相对路径
             uploadFile.setFileSize(file.getSize());
             uploadFile.setFileType(getFileExtension(originalFilename));
             uploadFile.setDifyDocumentId(difyResponse.getId());
@@ -156,9 +283,10 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
 
             int rows = uploadFileMapper.insertUploadFile(uploadFile);
             if (rows > 0) {
-                    log.info("文件上传成功: {} - {}", uploadFile.getID(), originalFilename);
+                log.info("知识库文件上传成功: uploadFileId={}, sysFileId={}, fileName={}",
+                        uploadFile.getID(), sysFile.getID(), originalFilename);
 
-                    // 8. 异步更新向量化状态
+                // 9. 异步更新向量化状态
                 asyncUpdateVectorStatus(uploadFile.getID());
 
                 resultDomain.success("文件上传成功", uploadFile);
@@ -168,11 +296,6 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
                 return resultDomain;
             }
 
-            } finally {
-                // 清理临时文件
-                deleteTempFile(tempFile);
-            }
-
         } catch (DifyException e) {
             log.error("上传文件到Dify失败", e);
             resultDomain.fail("上传文件失败: " + e.getMessage());
@@ -203,9 +326,7 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
             List<String> failedFiles = new ArrayList<>();
 
             for (MultipartFile file : files) {
-                ResultDomain<TbAiUploadFile> uploadResult = uploadToKnowledge(
+                ResultDomain<TbAiUploadFile> uploadResult = uploadToKnowledge(knowledgeId, file, indexingTechnique);
-                        knowledgeId, file, indexingTechnique
-                );
 
                 if (uploadResult.isSuccess()) {
                     uploadedFiles.add(uploadResult.getData());
@@ -258,8 +379,7 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
                     difyApiClient.deleteDocument(
                             knowledge.getDifyDatasetId(),
                             file.getDifyDocumentId(),
-                            difyConfig.getApiKey()
+                            difyConfig.getApiKey());
-                    );
                     log.info("Dify文档删除成功: {}", file.getDifyDocumentId());
                 } catch (DifyException e) {
                     log.error("删除Dify文档失败，继续删除本地记录", e);
@@ -393,8 +513,7 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
                 DocumentStatusResponse statusResponse = difyApiClient.getDocumentStatus(
                         knowledge.getDifyDatasetId(),
                         file.getDifyBatchId(),
-                        difyConfig.getApiKey()
+                        difyConfig.getApiKey());
-                );
 
                 // 4. 更新本地状态
                 TbAiUploadFile update = new TbAiUploadFile();
@@ -516,35 +635,45 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
     }
 
     /**
-     * 保存临时文件
+     * 获取文件类型（使用具体的文件扩展名）
+     * 图片类型返回 "image"，其他类型返回具体扩展名（pdf, docx, txt等）
      */
-    private File saveTempFile(MultipartFile file) {
+    private String getFileType(String filename) {
-        try {
+        if (!StringUtils.hasText(filename)) {
-            String tempDir = System.getProperty("java.io.tmpdir");
+            return "file";
-            String filename = UUID.randomUUID().toString() + "_" + file.getOriginalFilename();
-            Path tempPath = Paths.get(tempDir, filename);
-            
-            Files.copy(file.getInputStream(), tempPath);
-            
-            return tempPath.toFile();
-        } catch (IOException e) {
-            log.error("保存临时文件失败", e);
-            return null;
-        }
         }
 
-    /**
+        // 转换为大写以匹配数组中的类型
-     * 删除临时文件
+        String extension = getFileExtension(filename).toUpperCase();
-     */
+
-    private void deleteTempFile(File file) {
+        // 图片类型统一返回 "image"
-        if (file != null && file.exists()) {
+        String[] imageTypes = { "JPG", "JPEG", "PNG", "GIF", "WEBP", "SVG" };
-            try {
+        String[] documentTypes = { "TXT", "MD", "MARKDOWN", "MDX", "PDF", "HTML", "XLSX", "XLS", "VTT", "PROPERTIES",
-                Files.delete(file.toPath());
+                "DOC", "DOCX", "CSV", "EML", "MSG", "PPTX", "PPT", "XML", "EPUB" };
-                log.debug("临时文件已删除: {}", file.getAbsolutePath());
+        String[] audioTypes = { "MP3", "M4A", "WAV", "WEBM", "MPGA" };
-            } catch (IOException e) {
+        String[] videoTypes = { "MP4", "MOV", "MPEG", "WEBM" };
-                log.warn("删除临时文件失败: {}", file.getAbsolutePath(), e);
+
+        for (String type : imageTypes) {
+            if (type.equals(extension)) {
+                return "image";
             }
         }
+        for (String type : documentTypes) {
+            if (type.equals(extension)) {
+                return "document";
+            }
+        }
+        for (String type : audioTypes) {
+            if (type.equals(extension)) {
+                return "audio";
+            }
+        }
+        for (String type : videoTypes) {
+            if (type.equals(extension)) {
+                return "video";
+            }
+        }
+        return "custom";
     }
 
     /**
@@ -574,5 +703,26 @@ public class AiUploadFileServiceImpl implements AiUploadFileService {
             }
         }, executorService);
     }
+
+    @Override
+    public ResultDomain<TbAiUploadFile> listFilesByMessageId(String messageId) {
+        ResultDomain<TbAiUploadFile> resultDomain = new ResultDomain<>();
+
+        try {
+            if (!StringUtils.hasText(messageId)) {
+                resultDomain.fail("消息ID不能为空");
+                return resultDomain;
             }
 
+            List<TbAiUploadFile> files = uploadFileMapper.selectFilesByMessageId(messageId);
+            log.info("查询消息文件列表成功: messageId={}, fileCount={}", messageId, files.size());
+            resultDomain.success("查询成功", files);
+            return resultDomain;
+
+        } catch (Exception e) {
+            log.error("查询消息文件列表异常: messageId={}", messageId, e);
+            resultDomain.fail("查询失败: " + e.getMessage());
+            return resultDomain;
+        }
+    }
+}

schoolNewsServ/ai/src/main/resources/mapper/AiAgentConfigMapper.xml

@@ -8,12 +8,7 @@
         <result column="name" property="name" jdbcType="VARCHAR"/>
         <result column="avatar" property="avatar" jdbcType="VARCHAR"/>
         <result column="description" property="description" jdbcType="VARCHAR"/>
-        <result column="system_prompt" property="systemPrompt" jdbcType="LONGVARCHAR"/>
+        <result column="connect_internet" property="connectInternet" jdbcType="INTEGER"/>
-        <result column="model_name" property="modelName" jdbcType="VARCHAR"/>
-        <result column="model_provider" property="modelProvider" jdbcType="VARCHAR"/>
-        <result column="temperature" property="temperature" jdbcType="DECIMAL"/>
-        <result column="max_tokens" property="maxTokens" jdbcType="INTEGER"/>
-        <result column="top_p" property="topP" jdbcType="DECIMAL"/>
         <result column="dify_app_id" property="difyAppId" jdbcType="VARCHAR"/>
         <result column="dify_api_key" property="difyApiKey" jdbcType="VARCHAR"/>
         <result column="status" property="status" jdbcType="INTEGER"/>
@@ -27,8 +22,7 @@
 
     <!-- 基础字段 -->
     <sql id="Base_Column_List">
-        id, name, avatar, description, system_prompt, model_name, model_provider, 
+        id, name, avatar, description, connect_internet, dify_app_id, dify_api_key, status, 
-        temperature, max_tokens, top_p, dify_app_id, dify_api_key, status, 
         creator, updater, create_time, update_time, delete_time, deleted
     </sql>
 
@@ -39,12 +33,6 @@
             <if test="name != null and name != ''">
                 AND name LIKE CONCAT('%', #{name}, '%')
             </if>
-            <if test="modelName != null and modelName != ''">
-                AND model_name = #{modelName}
-            </if>
-            <if test="modelProvider != null and modelProvider != ''">
-                AND model_provider = #{modelProvider}
-            </if>
             <if test="status != null">
                 AND status = #{status}
             </if>
@@ -54,12 +42,10 @@
     <!-- 插入智能体配置 -->
     <insert id="insertAgentConfig" parameterType="org.xyzh.common.dto.ai.TbAiAgentConfig">
         INSERT INTO tb_ai_agent_config (
-            id, name, avatar, description, system_prompt, model_name, model_provider,
+            id, name, avatar, description, connect_internet, dify_app_id, dify_api_key, status,
-            temperature, max_tokens, top_p, dify_app_id, dify_api_key, status,
             creator, updater, create_time, update_time, deleted
         ) VALUES (
-            #{id}, #{name}, #{avatar}, #{description}, #{systemPrompt}, #{modelName}, #{modelProvider},
+            #{id}, #{name}, #{avatar}, #{description}, #{connectInternet}, #{difyAppId}, #{difyApiKey}, #{status},
-            #{temperature}, #{maxTokens}, #{topP}, #{difyAppId}, #{difyApiKey}, #{status},
             #{creator}, #{updater}, #{createTime}, #{updateTime}, #{deleted}
         )
     </insert>
@@ -71,12 +57,7 @@
             <if test="name != null and name != ''">name = #{name},</if>
             <if test="avatar != null">avatar = #{avatar},</if>
             <if test="description != null">description = #{description},</if>
-            <if test="systemPrompt != null">system_prompt = #{systemPrompt},</if>
+            <if test="connectInternet != null">connect_internet = #{connectInternet},</if>
-            <if test="modelName != null">model_name = #{modelName},</if>
-            <if test="modelProvider != null">model_provider = #{modelProvider},</if>
-            <if test="temperature != null">temperature = #{temperature},</if>
-            <if test="maxTokens != null">max_tokens = #{maxTokens},</if>
-            <if test="topP != null">top_p = #{topP},</if>
             <if test="difyAppId != null">dify_app_id = #{difyAppId},</if>
             <if test="difyApiKey != null">dify_api_key = #{difyApiKey},</if>
             <if test="status != null">status = #{status},</if>
@@ -116,9 +97,6 @@
             <if test="filter.status != null">
                 AND status = #{filter.status}
             </if>
-            <if test="filter.modelProvider != null and filter.modelProvider != ''">
-                AND model_provider = #{filter.modelProvider}
-            </if>
         </if>
         ORDER BY create_time DESC
     </select>
@@ -136,9 +114,6 @@
             <if test="filter.status != null">
                 AND status = #{filter.status}
             </if>
-            <if test="filter.modelProvider != null and filter.modelProvider != ''">
-                AND model_provider = #{filter.modelProvider}
-            </if>
         </if>
         ORDER BY create_time DESC
         LIMIT #{pageParam.offset}, #{pageParam.pageSize}
@@ -156,9 +131,6 @@
             <if test="filter.status != null">
                 AND status = #{filter.status}
             </if>
-            <if test="filter.modelProvider != null and filter.modelProvider != ''">
-                AND model_provider = #{filter.modelProvider}
-            </if>
         </if>
     </select>
 

schoolNewsServ/ai/src/main/resources/mapper/AiUploadFileMapper.xml

@@ -8,6 +8,8 @@
         <result column="user_id" property="userID" jdbcType="VARCHAR"/>
         <result column="knowledge_id" property="knowledgeId" jdbcType="VARCHAR"/>
         <result column="conversation_id" property="conversationID" jdbcType="VARCHAR"/>
+        <result column="message_id" property="messageID" jdbcType="VARCHAR"/>
+        <result column="sys_file_id" property="sysFileId" jdbcType="VARCHAR"/>
         <result column="file_name" property="fileName" jdbcType="VARCHAR"/>
         <result column="file_path" property="filePath" jdbcType="VARCHAR"/>
         <result column="file_size" property="fileSize" jdbcType="BIGINT"/>
@@ -16,12 +18,10 @@
         <result column="extracted_text" property="extractedText" jdbcType="LONGVARCHAR"/>
         <result column="dify_document_id" property="difyDocumentId" jdbcType="VARCHAR"/>
         <result column="dify_batch_id" property="difyBatchId" jdbcType="VARCHAR"/>
-        <result column="vector_status" property="vectorStatus" jdbcType="INTEGER"/>
+        <result column="dify_upload_file_id" property="difyUploadFileId" jdbcType="VARCHAR"/>
         <result column="chunk_count" property="chunkCount" jdbcType="INTEGER"/>
         <result column="status" property="status" jdbcType="INTEGER"/>
         <result column="error_message" property="errorMessage" jdbcType="VARCHAR"/>
-        <result column="creator" property="creator" jdbcType="VARCHAR"/>
-        <result column="updater" property="updater" jdbcType="VARCHAR"/>
         <result column="create_time" property="createTime" jdbcType="TIMESTAMP"/>
         <result column="update_time" property="updateTime" jdbcType="TIMESTAMP"/>
         <result column="delete_time" property="deleteTime" jdbcType="TIMESTAMP"/>
@@ -30,9 +30,9 @@
 
     <!-- 基础字段 -->
     <sql id="Base_Column_List">
-        id, user_id, knowledge_id, conversation_id, file_name, file_path, file_size, 
+        id, user_id, knowledge_id, conversation_id, message_id, sys_file_id, file_name, file_path, file_size, 
-        file_type, mime_type, extracted_text, dify_document_id, dify_batch_id, 
+        file_type, mime_type, extracted_text, dify_document_id, dify_batch_id, dify_upload_file_id,
-        vector_status, chunk_count, status, error_message, creator, updater, 
+        chunk_count, status, error_message, 
         create_time, update_time, delete_time, deleted
     </sql>
 
@@ -56,9 +56,6 @@
                 <if test="filter.fileType != null and filter.fileType != ''">
                     AND file_type = #{filter.fileType}
                 </if>
-                <if test="filter.vectorStatus != null">
-                    AND vector_status = #{filter.vectorStatus}
-                </if>
                 <if test="filter.status != null">
                     AND status = #{filter.status}
                 </if>
@@ -69,14 +66,14 @@
     <!-- insertUploadFile（插入文件记录） -->
     <insert id="insertUploadFile" parameterType="org.xyzh.common.dto.ai.TbAiUploadFile">
         INSERT INTO tb_ai_upload_file (
-            id, user_id, knowledge_id, conversation_id, file_name, file_path, file_size,
+            id, user_id, knowledge_id, conversation_id, message_id, sys_file_id, file_name, file_path, file_size,
-            file_type, mime_type, extracted_text, dify_document_id, dify_batch_id,
+            file_type, mime_type, extracted_text, dify_document_id, dify_batch_id, dify_upload_file_id,
-            vector_status, chunk_count, status, error_message, creator, updater,
+            chunk_count, status, error_message,
             create_time, update_time, deleted
         ) VALUES (
-            #{ID}, #{userID}, #{knowledgeId}, #{conversationID}, #{fileName}, #{filePath}, #{fileSize},
+            #{ID}, #{userID}, #{knowledgeId}, #{conversationID}, #{messageID}, #{sysFileId}, #{fileName}, #{filePath}, #{fileSize},
-            #{fileType}, #{mimeType}, #{extractedText}, #{difyDocumentId}, #{difyBatchId},
+            #{fileType}, #{mimeType}, #{extractedText}, #{difyDocumentId}, #{difyBatchId}, #{difyUploadFileId},
-            #{vectorStatus}, #{chunkCount}, #{status}, #{errorMessage}, #{creator}, #{updater},
+            #{chunkCount}, #{status}, #{errorMessage},
             #{createTime}, #{updateTime}, #{deleted}
         )
     </insert>
@@ -88,6 +85,8 @@
             <if test="userID != null">user_id = #{userID},</if>
             <if test="knowledgeId != null">knowledge_id = #{knowledgeId},</if>
             <if test="conversationID != null">conversation_id = #{conversationID},</if>
+            <if test="messageID != null">message_id = #{messageID},</if>
+            <if test="sysFileId != null">sys_file_id = #{sysFileId},</if>
             <if test="fileName != null">file_name = #{fileName},</if>
             <if test="filePath != null">file_path = #{filePath},</if>
             <if test="fileSize != null">file_size = #{fileSize},</if>
@@ -96,11 +95,10 @@
             <if test="extractedText != null">extracted_text = #{extractedText},</if>
             <if test="difyDocumentId != null">dify_document_id = #{difyDocumentId},</if>
             <if test="difyBatchId != null">dify_batch_id = #{difyBatchId},</if>
-            <if test="vectorStatus != null">vector_status = #{vectorStatus},</if>
+            <if test="difyUploadFileId != null">dify_upload_file_id = #{difyUploadFileId},</if>
             <if test="chunkCount != null">chunk_count = #{chunkCount},</if>
             <if test="status != null">status = #{status},</if>
             <if test="errorMessage != null">error_message = #{errorMessage},</if>
-            <if test="updater != null">updater = #{updater},</if>
             <if test="updateTime != null">update_time = #{updateTime},</if>
         </set>
         WHERE id = #{ID} AND deleted = 0
@@ -110,8 +108,7 @@
     <update id="deleteUploadFile" parameterType="org.xyzh.common.dto.ai.TbAiUploadFile">
         UPDATE tb_ai_upload_file
         SET deleted = 1,
-            delete_time = NOW(),
+            delete_time = NOW()
-            updater = #{updater}
         WHERE id = #{ID} AND deleted = 0
     </update>
 
@@ -186,4 +183,31 @@
         ORDER BY create_time DESC
     </select>
 
+    <!-- selectFilesByMessageId（根据消息ID查询关联的文件列表） -->
+    <select id="selectFilesByMessageId" resultMap="BaseResultMap">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM tb_ai_upload_file
+        WHERE message_id = #{messageId}
+          AND deleted = 0
+        ORDER BY create_time ASC
+    </select>
+
+    <!-- batchInsertUploadFiles（批量插入文件记录） -->
+    <insert id="batchInsertUploadFiles" parameterType="java.util.List">
+        INSERT INTO tb_ai_upload_file (
+            id, user_id, knowledge_id, conversation_id, message_id, sys_file_id, file_name, file_path, file_size,
+            file_type, mime_type, dify_document_id, dify_batch_id, dify_upload_file_id,
+            chunk_count, status, create_time, update_time, deleted
+        ) VALUES
+        <foreach collection="files" item="file" separator=",">
+            (
+                #{file.ID}, #{file.userID}, #{file.knowledgeId}, #{file.conversationID}, #{file.messageID},
+                #{file.sysFileId}, #{file.fileName}, #{file.filePath}, #{file.fileSize},
+                #{file.fileType}, #{file.mimeType}, #{file.difyDocumentId}, #{file.difyBatchId}, #{file.difyUploadFileId},
+                #{file.chunkCount}, #{file.status}, #{file.createTime}, #{file.updateTime}, #{file.deleted}
+            )
+        </foreach>
+    </insert>
+
 </mapper>

schoolNewsServ/api/api-ai/src/main/java/org/xyzh/api/ai/chat/AiChatService.java

@@ -2,6 +2,7 @@ package org.xyzh.api.ai.chat;
 
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 import org.xyzh.common.core.domain.ResultDomain;
+import org.xyzh.api.ai.dto.DifyFileInfo;
 import org.xyzh.common.dto.ai.TbAiConversation;
 import org.xyzh.common.dto.ai.TbAiMessage;
 
@@ -17,20 +18,27 @@ import java.util.List;
 public interface AiChatService {
 
     /**
-     * 流式对话（SSE）- 使用SseEmitter实现真正的流式推送
+     * 准备对话会话（POST传递复杂参数）
      * @param agentId 智能体ID
      * @param conversationId 会话ID（可选，为空则创建新会话）
      * @param query 用户问题
-     * @param knowledgeIds 使用的知识库ID列表（可选，用于知识库隔离）
+     * @param filesData 上传的文件列表（Dify文件信息）
-     * @return SseEmitter 流式推送对象
+     * @return ResultDomain<String> 返回sessionId
      */
-    SseEmitter streamChatWithSse(
+    ResultDomain<String> prepareChatSession(
             String agentId,
             String conversationId,
             String query,
-            List<String> knowledgeIds
+            List<DifyFileInfo> filesData
     );
 
+    /**
+     * 流式对话（SSE）- 使用sessionId建立SSE连接
+     * @param sessionId 会话标识
+     * @return SseEmitter 流式推送对象
+     */
+    SseEmitter streamChatWithSse(String sessionId);
+
     /**
      * 阻塞式对话（非流式）
      * @param agentId 智能体ID
@@ -42,8 +50,7 @@ public interface AiChatService {
     ResultDomain<TbAiMessage> blockingChat(
             String agentId,
             String conversationId,
-            String query,
+            String query
-            List<String> knowledgeIds
     );
 
 

schoolNewsServ/api/api-ai/src/main/java/org/xyzh/api/ai/dto/DifyFileInfo.java

@@ -0,0 +1,99 @@
+package org.xyzh.api.ai.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Data;
+
+/**
+ * @description Dify文件信息（用于对话文件上传和请求）
+ * @filename DifyFileInfo.java
+ * @author AI Assistant
+ * @copyright xyzh
+ * @since 2025-11-06
+ */
+@Data
+public class DifyFileInfo {
+    /**
+     * 文件ID（Dify返回）
+     */
+    private String id;
+    
+    /**
+     * 文件名
+     */
+    private String name;
+    
+    /**
+     * 文件大小（字节）
+     */
+    private Integer size;
+    
+    /**
+     * 文件扩展名
+     */
+    private String extension;
+    
+    /**
+     * 文件MIME类型
+     */
+    @JsonProperty("mime_type")
+    private String mimeType;
+    
+    /**
+     * 上传人ID
+     */
+    @JsonProperty("created_by")
+    private String createdBy;
+    
+    /**
+     * 上传时间（时间戳）
+     */
+    @JsonProperty("created_at")
+    private Long createdAt;
+    
+    /**
+     * 预览URL
+     */
+    @JsonProperty("preview_url")
+    private String previewUrl;
+    
+    /**
+     * 源文件URL
+     */
+    @JsonProperty("source_url")
+    private String sourceUrl;
+
+    /**
+     * 文件类型：image、document、audio、video、file
+     */
+    private String type;
+
+    /**
+     * 传输方式：remote_url、local_file
+     */
+    @JsonProperty("transfer_method")
+    private String transferMethod;
+
+    /**
+     * 文件URL或ID
+     */
+    private String url;
+
+    /**
+     * 本地文件上传ID
+     */
+    @JsonProperty("upload_file_id")
+    private String uploadFileId;
+
+    /**
+     * 系统文件ID
+     */
+    @JsonProperty("sys_file_id")
+    private String sysFileId;
+    
+    /**
+     * 文件路径（从系统文件表获取）
+     */
+    @JsonProperty("file_path")
+    private String filePath;
+}
+

schoolNewsServ/api/api-ai/src/main/java/org/xyzh/api/ai/file/AiUploadFileService.java

@@ -7,6 +7,7 @@ import org.xyzh.common.core.page.PageParam;
 import org.xyzh.common.dto.ai.TbAiUploadFile;
 
 import java.util.List;
+import java.util.Map;
 
 /**
  * @description AI文件上传服务接口
@@ -17,6 +18,17 @@ import java.util.List;
  */
 public interface AiUploadFileService {
 
+    /**
+     * 上传文件用于对话（图文多模态）
+     * @param file 上传的文件
+     * @param agentId 智能体ID
+     * @return Dify文件信息（包含id、name、size等）
+     */
+    ResultDomain<Map<String, Object>> uploadFileForChat(
+            MultipartFile file,
+            String agentId
+    );
+
     /**
      * 上传文件到知识库（同步到Dify）
      * @param knowledgeId 知识库ID
@@ -92,4 +104,11 @@ public interface AiUploadFileService {
      * @return 同步结果
      */
     ResultDomain<TbAiUploadFile> syncKnowledgeFiles(String knowledgeId);
+    
+    /**
+     * 查询消息关联的文件列表
+     * @param messageId 消息ID
+     * @return 文件列表
+     */
+    ResultDomain<TbAiUploadFile> listFilesByMessageId(String messageId);
 }

schoolNewsServ/api/api-file/src/main/java/org/xyzh/api/file/FileService.java

@@ -1,5 +1,7 @@
 package org.xyzh.api.file;
 
+import java.io.File;
+
 import org.springframework.web.multipart.MultipartFile;
 import org.xyzh.common.core.domain.ResultDomain;
 import org.xyzh.common.dto.system.TbSysFile;
@@ -120,5 +122,33 @@ public interface FileService {
      * @since 2025-10-16
      */
     ResultDomain<TbSysFile> batchDeleteFiles(String[] fileIds);
+
+    /**
+     * @description 保存临时文件（不入库，仅存储到磁盘）
+     * @param file 文件对象
+     * @param module 模块名称
+     * @return ResultDomain<String> 返回临时文件路径
+     * @author yslg
+     * @since 2025-11-06
+     */
+    ResultDomain<String> saveTempFile(MultipartFile file, String module);
+
+    /**
+     * @description 删除临时文件
+     * @param tempFilePath 临时文件路径
+     * @return ResultDomain<Boolean> 删除结果
+     * @author yslg
+     * @since 2025-11-06
+     */
+    ResultDomain<Boolean> deleteTempFile(String tempFilePath);
+    
+    /**
+     * @description 通过相对路径获取文件的绝对路径File对象
+     * @param relativePath 相对路径
+     * @return File 文件对象
+     * @author yslg
+     * @since 2025-11-06
+     */
+    File getFileByRelativePath(String relativePath);
 }
 

schoolNewsServ/api/pom.xml

@@ -101,6 +101,10 @@
             <artifactId>common-dto</artifactId>
             <version>${school-news.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
     </dependencies>
 
 

schoolNewsServ/common/common-dto/src/main/java/org/xyzh/common/dto/ai/TbAiAgentConfig.java

@@ -30,34 +30,11 @@ public class TbAiAgentConfig extends BaseDTO {
     private String description;
     
     /**
-     * @description 系统提示词
+     * @description 是否连接互联网 0不连接 1连接
      */
-    private String systemPrompt;
+    private Integer connectInternet;
 
-    /**
-     * @description 模型名称
-     */
-    private String modelName;
 
-    /**
-     * @description 模型提供商
-     */
-    private String modelProvider;
-    
-    /**
-     * @description 温度值
-     */
-    private BigDecimal temperature;
-    
-    /**
-     * @description 最大tokens
-     */
-    private Integer maxTokens;
-    
-    /**
-     * @description Top P值
-     */
-    private BigDecimal topP;
     
     /**
      * @description Dify应用ID
@@ -108,52 +85,12 @@ public class TbAiAgentConfig extends BaseDTO {
         this.description = description;
     }
 
-    public String getSystemPrompt() {
+    public Integer getConnectInternet() {
-        return systemPrompt;
+        return connectInternet;
     }
 
-    public void setSystemPrompt(String systemPrompt) {
+    public void setConnectInternet(Integer connectInternet) {
-        this.systemPrompt = systemPrompt;
+        this.connectInternet = connectInternet;
-    }
-
-    public String getModelName() {
-        return modelName;
-    }
-
-    public void setModelName(String modelName) {
-        this.modelName = modelName;
-    }
-
-    public String getModelProvider() {
-        return modelProvider;
-    }
-
-    public void setModelProvider(String modelProvider) {
-        this.modelProvider = modelProvider;
-    }
-
-    public BigDecimal getTemperature() {
-        return temperature;
-    }
-
-    public void setTemperature(BigDecimal temperature) {
-        this.temperature = temperature;
-    }
-
-    public Integer getMaxTokens() {
-        return maxTokens;
-    }
-
-    public void setMaxTokens(Integer maxTokens) {
-        this.maxTokens = maxTokens;
-    }
-
-    public BigDecimal getTopP() {
-        return topP;
-    }
-
-    public void setTopP(BigDecimal topP) {
-        this.topP = topP;
     }
 
     public String getDifyAppId() {
@@ -201,9 +138,12 @@ public class TbAiAgentConfig extends BaseDTO {
         return "TbAiAgentConfig{" +
                 "id=" + getID() +
                 ", name='" + name + '\'' +
-                ", modelName='" + modelName + '\'' +
+                ", connectInternet=" + connectInternet +
-                ", modelProvider='" + modelProvider + '\'' +
+                ", difyAppId='" + difyAppId + '\'' +
+                ", difyApiKey='" + difyApiKey + '\'' +
                 ", status=" + status +
+                ", creator='" + creator + '\'' +
+                ", updater='" + updater + '\'' +
                 ", createTime=" + getCreateTime() +
                 '}';
     }

schoolNewsServ/common/common-dto/src/main/java/org/xyzh/common/dto/ai/TbAiUploadFile.java

@@ -28,6 +28,16 @@ public class TbAiUploadFile extends BaseDTO {
      */
     private String conversationID;
     
+    /**
+     * @description 关联消息ID（绑定到具体的用户消息）
+     */
+    private String messageID;
+    
+    /**
+     * @description 系统文件ID（关联tb_sys_file）
+     */
+    private String sysFileId;
+    
     /**
      * @description 文件名
      */
@@ -68,6 +78,11 @@ public class TbAiUploadFile extends BaseDTO {
      */
     private String difyBatchId;
     
+    /**
+     * @description Dify上传文件ID（对话中上传的文件）
+     */
+    private String difyUploadFileId;
+    
     /**
      * @description 分段数量
      */
@@ -107,6 +122,22 @@ public class TbAiUploadFile extends BaseDTO {
         this.conversationID = conversationID;
     }
 
+    public String getMessageID() {
+        return messageID;
+    }
+
+    public void setMessageID(String messageID) {
+        this.messageID = messageID;
+    }
+
+    public String getSysFileId() {
+        return sysFileId;
+    }
+
+    public void setSysFileId(String sysFileId) {
+        this.sysFileId = sysFileId;
+    }
+
     public String getFileName() {
         return fileName;
     }
@@ -171,6 +202,14 @@ public class TbAiUploadFile extends BaseDTO {
         this.difyBatchId = difyBatchId;
     }
 
+    public String getDifyUploadFileId() {
+        return difyUploadFileId;
+    }
+
+    public void setDifyUploadFileId(String difyUploadFileId) {
+        this.difyUploadFileId = difyUploadFileId;
+    }
+
     public Integer getChunkCount() {
         return chunkCount;
     }

schoolNewsServ/file/src/main/java/org/xyzh/file/service/FileServiceImpl.java

@@ -4,6 +4,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import java.io.File;
 import org.springframework.web.multipart.MultipartFile;
 import org.xyzh.api.file.FileService;
 import org.xyzh.common.core.domain.ResultDomain;
@@ -371,5 +372,120 @@ public class FileServiceImpl implements FileService {
             return resultDomain;
         }
     }
+
+    @Override
+    public ResultDomain<String> saveTempFile(MultipartFile file, String module) {
+        ResultDomain<String> resultDomain = new ResultDomain<>();
+        
+        try {
+            if (file == null || file.isEmpty()) {
+                resultDomain.fail("文件不能为空");
+                return resultDomain;
+            }
+
+            // 获取存储策略
+            FileStorageStrategy strategy = strategyFactory.getDefaultStrategy();
+
+            // 生成唯一文件名
+            String originalFileName = file.getOriginalFilename();
+            String fileExtension = "";
+            if (originalFileName != null && originalFileName.contains(".")) {
+                fileExtension = originalFileName.substring(originalFileName.lastIndexOf("."));
+            }
+            String fileName = UUID.randomUUID().toString().replace("-", "") + fileExtension;
+
+            // 上传到临时目录
+            String tempModule = "temp/" + module;
+            String relativePath = strategy.upload(file, fileName, tempModule);
+            
+            // 转换为绝对路径（用于后续文件操作）
+            String absolutePath = strategy.getAbsolutePath(relativePath);
+
+            log.info("临时文件保存成功: relativePath={}, absolutePath={}, originalName={}", 
+                    relativePath, absolutePath, originalFileName);
+
+            resultDomain.success("临时文件保存成功", absolutePath);
+            return resultDomain;
+        } catch (Exception e) {
+            log.error("保存临时文件失败", e);
+            resultDomain.fail("保存临时文件失败: " + e.getMessage());
+            return resultDomain;
+        }
+    }
+
+    @Override
+    public ResultDomain<Boolean> deleteTempFile(String tempFilePath) {
+        ResultDomain<Boolean> resultDomain = new ResultDomain<>();
+        
+        try {
+            if (tempFilePath == null || tempFilePath.isEmpty()) {
+                resultDomain.fail("文件路径不能为空");
+                return resultDomain;
+            }
+
+            // 获取存储策略
+            FileStorageStrategy strategy = strategyFactory.getDefaultStrategy();
+            
+            // 判断是绝对路径还是相对路径
+            File file = new File(tempFilePath);
+            
+            if (file.isAbsolute()) {
+                // 如果是绝对路径，直接删除文件
+                if (file.exists()) {
+                    boolean deleted = file.delete();
+                    if (deleted) {
+                        log.info("临时文件删除成功（绝对路径）: filePath={}", tempFilePath);
+                        resultDomain.success("临时文件删除成功", true);
+                    } else {
+                        log.warn("临时文件删除失败（绝对路径）: filePath={}", tempFilePath);
+                        resultDomain.success("文件删除失败", false);
+                    }
+                } else {
+                    log.warn("临时文件不存在（绝对路径）: filePath={}", tempFilePath);
+                    resultDomain.success("文件不存在或已删除", false);
+                }
+            } else {
+                // 如果是相对路径，使用策略删除
+                boolean deleted = strategy.delete(tempFilePath);
+                
+                if (deleted) {
+                    log.info("临时文件删除成功（相对路径）: filePath={}", tempFilePath);
+                    resultDomain.success("临时文件删除成功", true);
+                } else {
+                    log.warn("临时文件删除失败，可能文件不存在（相对路径）: filePath={}", tempFilePath);
+                    resultDomain.success("文件不存在或已删除", false);
+                }
+            }
+            
+            return resultDomain;
+        } catch (Exception e) {
+            log.error("删除临时文件失败: filePath={}", tempFilePath, e);
+            resultDomain.fail("删除临时文件失败: " + e.getMessage());
+            return resultDomain;
+        }
+    }
+    
+    @Override
+    public File getFileByRelativePath(String relativePath) {
+        if (relativePath == null || relativePath.isEmpty()) {
+            log.warn("相对路径为空，无法获取文件对象");
+            return null;
+        }
+        
+        try {
+            FileStorageStrategy strategy = strategyFactory.getDefaultStrategy();
+            String absolutePath = strategy.getAbsolutePath(relativePath);
+            File file = new File(absolutePath);
+            
+            if (!file.exists()) {
+                log.warn("文件不存在: relativePath={}, absolutePath={}", relativePath, absolutePath);
+            }
+            
+            return file;
+        } catch (Exception e) {
+            log.error("获取文件对象失败: relativePath={}", relativePath, e);
+            return null;
+        }
+    }
 }
 

schoolNewsServ/file/src/main/java/org/xyzh/file/strategy/FileStorageStrategy.java

@@ -61,5 +61,14 @@ public interface FileStorageStrategy {
      * @since 2025-10-16
      */
     String getStorageType();
+
+    /**
+     * @description 获取文件的绝对路径（用于临时文件）
+     * @param relativePath 相对路径
+     * @return String 绝对路径
+     * @author AI Assistant
+     * @since 2025-11-06
+     */
+    String getAbsolutePath(String relativePath);
 }
 

schoolNewsServ/file/src/main/java/org/xyzh/file/strategy/impl/LocalFileStorageStrategy.java

@@ -76,5 +76,10 @@ public class LocalFileStorageStrategy implements FileStorageStrategy {
     public String getStorageType() {
         return "local";
     }
+
+    @Override
+    public String getAbsolutePath(String relativePath) {
+        return basePath + File.separator + relativePath;
+    }
 }
 

schoolNewsServ/file/src/main/java/org/xyzh/file/strategy/impl/MinIOFileStorageStrategy.java

@@ -137,5 +137,10 @@ public class MinIOFileStorageStrategy implements FileStorageStrategy {
     public String getStorageType() {
         return "minio";
     }
+
+    @Override
+    public String getAbsolutePath(String relativePath) {
+        return relativePath;
+    }
 }
 

schoolNewsWeb/src/apis/ai/agent-config.ts

@@ -47,7 +47,9 @@ export const aiAgentConfigApi = {
    * @returns Promise<ResultDomain<AiAgentConfig>>
    */
   async getAgentById(agentId: string): Promise<ResultDomain<AiAgentConfig>> {
-    const response = await api.get<AiAgentConfig>(`/ai/agent/${agentId}`);
+    const response = await api.get<AiAgentConfig>(`/ai/agent/${agentId}`, {
+      showLoading: false
+    });
     return response.data;
   },
 
@@ -56,7 +58,9 @@ export const aiAgentConfigApi = {
    * @returns Promise<ResultDomain<AiAgentConfig[]>>
    */
   async listEnabledAgents(): Promise<ResultDomain<AiAgentConfig>> {
-    const response = await api.get<AiAgentConfig>('/ai/agent/enabled');
+    const response = await api.get<AiAgentConfig>('/ai/agent/enabled', {
+      showLoading: false
+    });
     return response.data;
   },
 

schoolNewsWeb/src/apis/ai/chat-history.ts

@@ -128,7 +128,7 @@ export const chatHistoryApi = {
    */
   async getRecentConversations(limit = 10): Promise<ResultDomain<AiConversation>> {
     const response = await api.get<AiConversation>('/ai/chat/history/recent', {
-      params: { limit }
+      limit 
     });
     return response.data;
   }

schoolNewsWeb/src/apis/ai/chat.ts

@@ -18,25 +18,38 @@ import type {
  */
 export const chatApi = {
   /**
-   * 流式对话（SSE）- 使用fetch支持Authorization
+   * 流式对话（SSE）- 两步法：POST准备 + GET建立SSE
    * @param request 对话请求
    * @param callback 流式回调
    * @returns Promise<ResultDomain<AiMessage>>
    */
   async streamChat(request: ChatRequest, callback?: StreamCallback): Promise<ResultDomain<AiMessage>> {
-    const token = localStorage.getItem('token');
-    const tokenData = token ? JSON.parse(token) : null;
     return new Promise((resolve, reject) => {
-      // 使用相对路径走Vite代理，避免跨域
+      // 使用IIFE包装async逻辑，避免Promise executor是async的警告
-      const eventSource = new EventSource(
+      (async () => {
-        `/api/ai/chat/stream?` +
+        try {
-          new URLSearchParams({
+          const token = localStorage.getItem('token');
+          const tokenData = token ? JSON.parse(token).value : '';
+          // 第1步：POST准备会话，获取sessionId
+          const prepareResponse = await api.post<string>('/ai/chat/stream/prepare', {
             agentId: request.agentId,
             conversationId: request.conversationId || '',
             query: request.query,
-            knowledgeIds: request.knowledgeIds?.join(',') || '',
+            files: request.files || []
-            token: tokenData?.value || ''
+          }, {
-          })
+            showLoading: false
+          });
+
+          if (!prepareResponse.data.success || !prepareResponse.data.data) {
+            throw new Error(prepareResponse.data.message || '准备会话失败');
+          }
+
+          const sessionId = prepareResponse.data.data;
+          console.log('[会话创建成功] sessionId:', sessionId);
+
+          // 第2步：GET建立SSE连接
+          const eventSource = new EventSource(
+            `/api/ai/chat/stream?sessionId=${sessionId}&token=${tokenData}`
           );
 
           // 通知外部EventSource已创建
@@ -100,7 +113,6 @@ export const chatApi = {
             eventSource.addEventListener(eventType, (event: any) => {
               try {
                 const eventData = JSON.parse(event.data);
-            console.log(`[Dify事件] ${eventType}:`, eventData);
                 
                 // 调用自定义的Dify事件回调
                 if (callback?.onDifyEvent) {
@@ -126,6 +138,12 @@ export const chatApi = {
             eventSource.close();
             reject(error);
           };
+        } catch (error) {
+          console.error('流式对话失败:', error);
+          callback?.onError?.(error as Error);
+          reject(error);
+        }
+      })(); // 立即执行IIFE
     });
   },
 
@@ -173,6 +191,8 @@ export const chatApi = {
     const response = await api.post<AiConversation>('/ai/chat/conversation', {
       agentId,
       title
+    }, {
+      showLoading: false
     });
     return response.data;
   },
@@ -193,7 +213,9 @@ export const chatApi = {
    * @returns Promise<ResultDomain<AiConversation>>
    */
   async updateConversation(conversation: AiConversation): Promise<ResultDomain<AiConversation>> {
-    const response = await api.put<AiConversation>('/ai/chat/conversation', conversation);
+    const response = await api.put<AiConversation>('/ai/chat/conversation', conversation, {
+      showLoading: false
+    });
     return response.data;
   },
 
@@ -203,7 +225,9 @@ export const chatApi = {
    * @returns Promise<ResultDomain<boolean>>
    */
   async deleteConversation(conversationId: string): Promise<ResultDomain<boolean>> {
-    const response = await api.delete<boolean>(`/ai/chat/conversation/${conversationId}`);
+    const response = await api.delete<boolean>(`/ai/chat/conversation/${conversationId}`, {
+      showLoading: false
+    });
     return response.data;
   },
 
@@ -225,7 +249,9 @@ export const chatApi = {
    * @returns Promise<ResultDomain<AiMessage[]>>
    */
   async listMessages(conversationId: string): Promise<ResultDomain<AiMessage>> {
-    const response = await api.get<AiMessage>(`/ai/chat/conversation/${conversationId}/messages`);
+    const response = await api.get<AiMessage>(`/ai/chat/conversation/${conversationId}/messages`, {
+      showLoading: false
+    });
     return response.data;
   },
 
@@ -319,8 +345,6 @@ export const chatApi = {
         eventSource.addEventListener(eventType, (event: any) => {
           try {
             const eventData = JSON.parse(event.data);            
-            console.log(`[Dify事件] ${eventType}:`, eventData);
-            
             // 调用自定义的Dify事件回调
             if (callback?.onDifyEvent) {
               const cleanEventType = eventType.replace('dify_', '');
@@ -369,6 +393,8 @@ export const chatApi = {
     const response = await api.post<boolean>(`/ai/chat/message/${messageId}/rate`, {
       rating,
       feedback
+    }, {
+      showLoading: false
     });
     return response.data;
   }

schoolNewsWeb/src/apis/ai/file-upload.ts

@@ -10,6 +10,24 @@ import type { AiUploadFile, ResultDomain, FileUploadResponse, PageParam } from '
  * 文件上传API服务
  */
 export const fileUploadApi = {
+  /**
+   * 上传文件用于对话（图文多模态）
+   * @param file 文件对象
+   * @param agentId 智能体ID
+   * @returns Promise<ResultDomain<Record<string, any>>> 返回Dify文件信息
+   */
+  async uploadFileForChat(file: File, agentId: string): Promise<ResultDomain<Record<string, any>>> {
+    const formData = new FormData();
+    formData.append('file', file);
+    formData.append('agentId', agentId);
+
+    // 关闭加载提示，避免影响用户体验
+    const response = await api.post<Record<string, any>>('/ai/file/upload-for-chat', formData, {
+      showLoading: false
+    });
+    return response.data;
+  },
+
   /**
    * 上传单个文件到知识库
    * @param knowledgeId 知识库ID
@@ -21,7 +39,9 @@ export const fileUploadApi = {
     formData.append('file', file);
     formData.append('knowledgeId', knowledgeId);
 
-    const response = await api.post<FileUploadResponse>('/ai/file/upload', formData);
+    const response = await api.post<FileUploadResponse>('/ai/file/upload', formData, {
+      showLoading: false
+    });
     return response.data;
   },
 
@@ -38,7 +58,9 @@ export const fileUploadApi = {
     });
     formData.append('knowledgeId', knowledgeId);
 
-    const response = await api.post<FileUploadResponse[]>('/ai/file/batch-upload', formData);
+    const response = await api.post<FileUploadResponse[]>('/ai/file/batch-upload', formData, {
+      showLoading: false
+    });
     return response.data;
   },
 
@@ -104,5 +126,17 @@ export const fileUploadApi = {
   async batchSyncFileStatus(fileIds: string[]): Promise<ResultDomain<number>> {
     const response = await api.post<number>('/ai/file/batch-sync', { fileIds });
     return response.data;
+  },
+
+  /**
+   * 查询消息关联的文件列表
+   * @param messageId 消息ID
+   * @returns Promise<ResultDomain<AiUploadFile[]>>
+   */
+  async listFilesByMessage(messageId: string): Promise<ResultDomain<AiUploadFile[]>> {
+    const response = await api.get<AiUploadFile[]>(`/ai/file/message/${messageId}`, {
+      showLoading: false
+    });
+    return response.data;
   }
 };

schoolNewsWeb/src/types/ai/index.ts

@@ -19,6 +19,8 @@ export interface AiAgentConfig extends BaseDTO {
   description?: string;
   /** 系统提示词 */
   systemPrompt?: string;
+  /** 是否连接互联网（0否 1是） */
+  connectInternet?: number;
   /** 模型名称 */
   modelName?: string;
   /** 模型提供商 */
@@ -73,6 +75,8 @@ export interface AiKnowledge extends BaseDTO {
 export interface AiUploadFile extends BaseDTO {
   /** 知识库ID */
   knowledgeId?: string;
+  /** 系统文件ID（关联tb_sys_file） */
+  sysFileId?: string;
   /** 文件名 */
   fileName?: string;
   /** 文件路径 */
@@ -139,6 +143,8 @@ export interface AiMessage extends BaseDTO {
   content?: string;
   /** 关联文件ID（JSON数组） */
   fileIDs?: string;
+  /** 关联文件列表（前端附加，用于显示文件详情） */
+  files?: AiUploadFile[];
   /** 引用知识ID（JSON数组） */
   knowledgeIDs?: string;
   /** 知识库引用详情（JSON数组） */
@@ -185,10 +191,15 @@ export interface ChatRequest {
   conversationId?: string;
   /** 用户问题 */
   query: string;
-  /** 指定的知识库ID列表（可选） */
-  knowledgeIds?: string[];
   /** 是否流式返回 */
   stream?: boolean;
+  fileIDs?: string;
+  /** 上传的文件列表（Dify文件信息） */
+  files?: Array<{
+    type: string;
+    transfer_method: string;
+    upload_file_id: string;
+  }>;
 }
 
 /**

schoolNewsWeb/src/views/admin/manage/ai/AIConfigView.vue

@@ -55,6 +55,21 @@
                 show-word-limit
               />
             </el-form-item>
+
+            <el-form-item label="联网功能">
+              <div class="internet-switch-container">
+                <el-switch 
+                  v-model="internetEnabled" 
+                  active-text="启用联网"
+                  inactive-text="关闭联网"
+                  :active-value="1"
+                  :inactive-value="0"
+                />
+                <div class="internet-description">
+                  启用后，AI助手可以访问互联网获取实时信息
+                </div>
+              </div>
+            </el-form-item>
           </div>
 
           <!-- 操作按钮 -->
@@ -90,11 +105,20 @@ const configForm = ref<AiAgentConfig>({
   name: '',
   avatar: '',
   systemPrompt: '',
+  connectInternet: 0,
   modelName: '',
   modelProvider: 'dify',
   status: 1
 });
 
+// 联网开关（用于双向绑定）
+const internetEnabled = computed({
+  get: () => configForm.value.connectInternet || 0,
+  set: (val) => {
+    configForm.value.connectInternet = val;
+  }
+});
+
 // 状态
 const saving = ref(false);
 const loading = ref(false);
@@ -119,9 +143,9 @@ async function loadConfig() {
     loading.value = true;
     // 获取启用的智能体列表
     const result = await aiAgentConfigApi.listEnabledAgents();
-    if (result.success && result.data && result.data.length > 0) {
+    if (result.success && result.dataList && result.dataList.length > 0) {
       // 使用第一个启用的智能体
-      Object.assign(configForm.value, result.data[0]);
+      Object.assign(configForm.value, result.dataList[0]);
     }
   } catch (error) {
     console.error('加载配置失败:', error);
@@ -391,12 +415,33 @@ async function handleReset() {
   }
 }
 
+.internet-switch-container {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+
+  .internet-description {
+    font-size: 13px;
+    color: #6B7240;
+    line-height: 1.5;
+  }
+}
+
 :deep(.el-switch) {
   --el-switch-on-color: #E7000B;
 
   .el-switch__label {
     font-size: 14px;
     color: #0A0A0A;
+    font-weight: 500;
+  }
+  
+  &.is-checked .el-switch__label--left {
+    color: #6B7240;
+  }
+  
+  &:not(.is-checked) .el-switch__label--right {
+    color: #6B7240;
   }
 }
 </style>

schoolNewsWeb/src/views/public/ai/AIAgent.vue

@@ -21,7 +21,7 @@
 
         <div v-if="!historyCollapsed" class="history-list">
           <!-- 新建对话按钮 -->
-          <button class="new-chat-btn" @click="() => createNewConversation()">
+          <button class="new-chat-btn" @click="prepareNewConversation">
             + 新建对话
           </button>
 
@@ -83,6 +83,19 @@
               </div>
               <div class="message-content">
                 <div class="message-text">{{ message.content }}</div>
+                <!-- 文件列表 -->
+                <div v-if="message.files && message.files.length > 0" class="message-files">
+                  <div v-for="file in message.files" :key="file.id" class="message-file-item">
+                    <a :href="`/api/file/download/${file.sysFileId || file.filePath}`" 
+                       :download="file.fileName"
+                       target="_blank"
+                       class="file-link">
+                      <span class="file-icon">📎</span>
+                      <span class="file-name">{{ file.fileName }}</span>
+                      <span class="file-size">({{ formatFileSize(file.fileSize) }})</span>
+                    </a>
+                  </div>
+                </div>
                 <div class="message-time">{{ formatMessageTime(message.createTime) }}</div>
               </div>
             </div>
@@ -96,16 +109,18 @@
                 </div>
               </div>
               <div class="message-content">
-                <!-- 如果内容为空且正在生成，显示加载动画 -->
+                <!-- 显示消息内容 -->
-                <div v-if="!message.content && isGenerating" class="typing-indicator">
+                <div v-if="message.content" class="message-text" v-html="formatMarkdown(message.content)"></div>
+                
+                <!-- 正在生成中的加载动画 -->
+                <div v-if="isGenerating && messages[messages.length - 1]?.id === message.id" class="typing-indicator-inline">
                   <span></span>
                   <span></span>
                   <span></span>
                 </div>
-                <!-- 否则显示实际内容 -->
+                
-                <template v-else>
+                <!-- 消息底部：时间和操作按钮 -->
-                  <div class="message-text" v-html="formatMarkdown(message.content || '')"></div>
+                <div v-if="message.content" class="message-footer">
-                  <div class="message-footer">
                   <div class="message-time">{{ formatMessageTime(message.createTime) }}</div>
                   <div class="message-actions">
                     <button @click="copyMessage(message.content || '')" class="msg-action-btn" title="复制">
@@ -124,25 +139,6 @@
                     </button>
                   </div>
                 </div>
-                </template>
-              </div>
-            </div>
-          </div>
-
-          <!-- 加载中提示：只在还没有AI消息时显示 -->
-          <div v-if="isGenerating && (!messages.length || messages[messages.length - 1]?.role !== 'assistant')" 
-               class="message ai-message generating">
-            <div class="message-avatar">
-              <div class="avatar-circle ai-avatar">
-                <img v-if="agentAvatarUrl" :src="agentAvatarUrl" alt="AI助手" class="ai-avatar-img" />
-                <img v-else src="@/assets/imgs/assistant.svg" alt="AI助手" class="ai-avatar-img" />
-              </div>
-            </div>
-            <div class="message-content">
-              <div class="typing-indicator">
-                <span></span>
-                <span></span>
-                <span></span>
               </div>
             </div>
           </div>
@@ -191,8 +187,8 @@
 <script setup lang="ts">
 import { ref, computed, onMounted, onUnmounted, nextTick } from 'vue';
 import { ElMessage, ElMessageBox } from 'element-plus';
-import { chatApi, chatHistoryApi, aiAgentConfigApi } from '@/apis/ai';
+import { chatApi, chatHistoryApi, aiAgentConfigApi, fileUploadApi } from '@/apis/ai';
-import type { AiConversation, AiMessage, AiAgentConfig } from '@/types/ai';
+import type { AiConversation, AiMessage, AiAgentConfig, AiUploadFile } from '@/types/ai';
 
 interface AIAgentProps {
   agentId?: string;
@@ -480,21 +476,27 @@ async function loadMoreConversations() {
   // TODO: 实现分页加载
 }
 
-// 新建对话
+// 准备新对话（只清空状态，不创建conversation）
+function prepareNewConversation() {
+  currentConversation.value = null;
+  messages.value = [];
+  ElMessage.success('已准备新对话，发送消息后将自动创建');
+}
+
+// 创建新对话（内部使用，在发送第一条消息时调用）
 async function createNewConversation(title?: string) {
   try {
     const result = await chatApi.createConversation(agentConfig.value!.id!, title);
     if (result.success && result.data) {
       currentConversation.value = result.data;
+      // 将新创建的对话添加到列表开头
       conversations.value.unshift(result.data);
-      messages.value = [];
+      return result.data;
-      if (!title) {
-        ElMessage.success('已创建新对话');
-      }
     }
   } catch (error) {
     console.error('创建对话失败:', error);
     ElMessage.error('创建对话失败');
+    return null;
   }
 }
 
@@ -594,6 +596,9 @@ const difyEventData = ref<Record<string, any>>({}); // 存储Dify事件数据
 const chatContentRef = ref<HTMLElement | null>(null);
 const inputRef = ref<HTMLTextAreaElement | null>(null);
 
+// 消息文件列表缓存
+const messageFilesCache = ref<Record<string, any[]>>({});
+
 // 加载消息
 async function loadMessages(conversationId: string) {
   try {
@@ -602,6 +607,14 @@ async function loadMessages(conversationId: string) {
       // 后端返回List，所以数据在dataList字段
       const messageList = result.dataList || result.data || [];
       messages.value = Array.isArray(messageList) ? messageList : [];
+      
+      // 加载每条用户消息的关联文件
+      for (const message of messages.value) {
+        if (message.role === 'user' && message.id) {
+          await loadMessageFiles(message.id);
+        }
+      }
+      
       await nextTick();
       scrollToBottom();
     }
@@ -610,6 +623,24 @@ async function loadMessages(conversationId: string) {
   }
 }
 
+// 加载消息关联的文件列表
+async function loadMessageFiles(messageId: string) {
+  try {
+    const result = await fileUploadApi.listFilesByMessage(messageId);
+    if (result.success && result.dataList) {
+      messageFilesCache.value[messageId] = result.dataList;
+      
+      // 将文件列表附加到消息对象上
+      const message = messages.value.find(m => m.id === messageId);
+      if (message) {
+        (message as any).files = result.dataList;
+      }
+    }
+  } catch (error) {
+    console.error('加载消息文件失败:', error);
+  }
+}
+
 // 发送消息
 async function sendMessage() {
   if (!canSend.value) return;
@@ -620,10 +651,13 @@ async function sendMessage() {
   // 如果没有当前对话，创建新对话，使用第一个问题作为标题
   const isFirstMessage = !currentConversation.value;
   if (isFirstMessage) {
-    // 限制标题长度为50字符
+    // 限制标题长度为20字符
-    const title = message.length > 50 ? message.substring(0, 50) + '...' : message;
+    const title = message.length > 20 ? message.substring(0, 20) + '...' : message;
-    await createNewConversation(title);
+    const newConv = await createNewConversation(title);
-    if (!currentConversation.value) return;
+    if (!newConv) {
+      ElMessage.error('创建对话失败');
+      return;
+    }
   }
 
   // 添加用户消息到界面
@@ -648,11 +682,20 @@ async function sendMessage() {
   try {
     let aiMessageContent = '';
 
-    await chatApi.streamChat({
+    chatApi.streamChat({
       agentId: agentConfig.value!.id!,
       conversationId: currentConversation.value?.id || '',
       query: message,
-      knowledgeIds: []
+      files: uploadedFiles.value.map(f => ({
+        id: f.id,  // Dify文件ID
+        sys_file_id: f.sys_file_id,  // 系统文件ID（用于保存关联记录）
+        file_path: f.file_path,  // 文件路径（用于保存记录）
+        name: f.name,
+        size: f.size,
+        type: f.type,
+        transfer_method: f.transfer_method,
+        upload_file_id: f.upload_file_id
+      }))
     },
       {
         onStart: (eventSource: EventSource) => {
@@ -681,7 +724,6 @@ async function sendMessage() {
               updateTime: new Date().toISOString()
             });
           }
-
           // 累加内容（包括空chunk，因为后端可能分块发送）
           if (chunk) {
             aiMessageContent += chunk;
@@ -697,7 +739,7 @@ async function sendMessage() {
         },
         onDifyEvent: (eventType: string, eventData: any) => {
           // 处理Dify原始事件（包含完整信息）
-          console.log(`[Dify事件] ${eventType}:`, eventData);
+          
           
           // 存储事件数据
           difyEventData.value[eventType] = eventData;
@@ -712,17 +754,12 @@ async function sendMessage() {
           // 例如：node_started, node_finished, agent_thought等
         },
         onMessageEnd: () => {
-          // 消息结束，如果是第一条消息，更新会话列表中的标题
-          if (isFirstMessage && currentConversation.value) {
-            const convIndex = conversations.value.findIndex(c => c.id === currentConversation.value!.id);
-            if (convIndex !== -1) {
-              conversations.value[convIndex].title = currentConversation.value.title;
-            }
-          }
           isGenerating.value = false;
           currentEventSource.value = null;
           currentTaskId.value = null;
           currentMessageId.value = null;
+          // 清空已上传的文件列表（文件仅对一次消息发送生效）
+          uploadedFiles.value = [];
         },
         onError: (error: Error) => {
           console.error('对话失败:', error);
@@ -731,14 +768,27 @@ async function sendMessage() {
           currentEventSource.value = null;
           currentTaskId.value = null;
           currentMessageId.value = null;
+          // 发送失败也清空文件列表
+          uploadedFiles.value = [];
         }
       }
     );
+    // 把文件放到message里面，转换为AiUploadFile格式
+    userMessage.files = uploadedFiles.value.map(f => ({
+      id: f.id,
+      sysFileId: f.sys_file_id,
+      fileName: f.name,
+      filePath: f.file_path,
+      fileSize: f.size,
+      fileType: f.type
+    } as AiUploadFile));
   } catch (error) {
     console.error('发送消息失败:', error);
     ElMessage.error('发送消息失败');
     isGenerating.value = false;
     currentEventSource.value = null;
+    // 发送失败也清空文件列表
+    uploadedFiles.value = [];
   }
 }
 
@@ -866,8 +916,6 @@ async function regenerateMessage(messageId: string) {
           nextTick(() => scrollToBottom());
         },
         onDifyEvent: (eventType: string, eventData: any) => {
-          // 处理Dify原始事件（包含完整信息）
-          console.log(`[Dify事件-重新生成] ${eventType}:`, eventData);
           
           // 存储事件数据
           difyEventData.value[eventType] = eventData;
@@ -923,25 +971,65 @@ async function rateMessage(messageId: string, rating: number) {
 }
 
 // ===== 文件上传相关 =====
-const uploadedFiles = ref<File[]>([]);
+interface DifyFile {
+  id: string;
+  name: string;
+  size: number;
+  type: string;
+  transfer_method: string;
+  upload_file_id: string;
+  localFile?: File; // 保留原始File对象用于显示
+  sys_file_id: string;
+  file_path: string;
+}
+
+const uploadedFiles = ref<DifyFile[]>([]);
 const fileInputRef = ref<HTMLInputElement | null>(null);
+const isUploading = ref(false);
 
 function triggerFileUpload() {
   fileInputRef.value?.click();
 }
 
-function handleFileUpload(e: Event) {
+async function handleFileUpload(e: Event) {
   const target = e.target as HTMLInputElement;
   const files = target.files;
 
-  if (files && files.length > 0) {
+  if (!files || files.length === 0) return;
-    uploadedFiles.value.push(...Array.from(files));
+  if (!agentConfig.value?.id) {
-    ElMessage.success(`已添加 ${files.length} 个文件`);
+    ElMessage.error('智能体未加载');
+    return;
   }
 
+  isUploading.value = true;
+
+  try {
+    // 逐个上传文件到Dify
+    for (const file of Array.from(files)) {
+      try {
+        const result = await fileUploadApi.uploadFileForChat(file, agentConfig.value.id);
+        
+        if (result.success && result.data) {
+          // 保存Dify返回的文件信息
+          uploadedFiles.value.push({
+            ...result.data as DifyFile,
+            localFile: file // 保留原始文件用于显示
+          });
+          ElMessage.success(`${file.name} 上传成功`);
+        } else {
+          ElMessage.error(`${file.name} 上传失败: ${result.message}`);
+        }
+      } catch (error) {
+        console.error(`上传文件失败: ${file.name}`, error);
+        ElMessage.error(`${file.name} 上传失败`);
+      }
+    }
+  } finally {
+    isUploading.value = false;
     // 清空input，允许重复选择同一文件
     target.value = '';
   }
+}
 
 function removeUploadedFile(index: number) {
   uploadedFiles.value.splice(index, 1);
@@ -974,6 +1062,15 @@ function formatMessageTime(dateStr: string | undefined) {
   return date.toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' });
 }
 
+// 格式化文件大小
+function formatFileSize(bytes: number | undefined): string {
+  if (!bytes) return '0 B';
+  const k = 1024;
+  const sizes = ['B', 'KB', 'MB', 'GB'];
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+  return (bytes / Math.pow(k, i)).toFixed(2) + ' ' + sizes[i];
+}
+
 function formatMarkdown(content: string) {
   // 简单的 Markdown 转换（可以使用 marked.js 等库进行更复杂的转换）
   let html = content;
@@ -1507,6 +1604,30 @@ onUnmounted(() => {
         }
       }
     }
+    
+    // 内联加载动画（在消息内容下方显示）
+    .typing-indicator-inline {
+      display: flex;
+      gap: 4px;
+      padding: 8px 0;
+      width: fit-content;
+
+      span {
+        width: 6px;
+        height: 6px;
+        border-radius: 50%;
+        background: #9CA3AF;
+        animation: typing 1.4s infinite;
+
+        &:nth-child(2) {
+          animation-delay: 0.2s;
+        }
+
+        &:nth-child(3) {
+          animation-delay: 0.4s;
+        }
+      }
+    }
   }
 
   .current-chat-input {
@@ -1546,6 +1667,49 @@ onUnmounted(() => {
       }
     }
 
+    .message-files {
+      margin-top: 8px;
+      display: flex;
+      flex-direction: column;
+      gap: 6px;
+
+      .message-file-item {
+        .file-link {
+          display: flex;
+          align-items: center;
+          gap: 6px;
+          padding: 8px 12px;
+          background: rgba(255, 255, 255, 0.1);
+          border-radius: 6px;
+          text-decoration: none;
+          color: inherit;
+          transition: all 0.2s;
+          font-size: 13px;
+
+          &:hover {
+            background: rgba(255, 255, 255, 0.2);
+            transform: translateX(2px);
+          }
+
+          .file-icon {
+            font-size: 16px;
+          }
+
+          .file-name {
+            flex: 1;
+            overflow: hidden;
+            text-overflow: ellipsis;
+            white-space: nowrap;
+          }
+
+          .file-size {
+            opacity: 0.7;
+            font-size: 12px;
+          }
+        }
+      }
+    }
+
     .input-area {
       display: flex;
       gap: 12px;