diff --git a/schoolNewsServ/.bin/dify/部署注意点.md b/schoolNewsServ/.bin/dify/部署注意点.md
new file mode 100644
index 0000000..9c2ac1b
--- /dev/null
+++ b/schoolNewsServ/.bin/dify/部署注意点.md
@@ -0,0 +1,9 @@
+# 1.工作流修改
+## 动态知识库检索工作流
+修改dataset的apikey
+
+## 思政小帮手对话流
+修改“动态知识库检索”的入参
+
+# 2. 后端修改
+修改yaml的配置内容
\ No newline at end of file
diff --git a/schoolNewsServ/admin/src/main/resources/application.yml b/schoolNewsServ/admin/src/main/resources/application.yml
index e2d73dd..eaa1118 100644
--- a/schoolNewsServ/admin/src/main/resources/application.yml
+++ b/schoolNewsServ/admin/src/main/resources/application.yml
@@ -111,6 +111,7 @@ school-news:
       - "/public/**"
       - "/static/**"
       - "/file/download/**"
+      - "/ai/chat/stream/**"
 
 
 crawler:
@@ -158,6 +159,10 @@ crontab:
           type: Boolean
           value: true
 
+
+# dify
+dify:
+  knowledgeApiKey: dataset-nupqKP4LONpzdXmGthIrbjeJ
 # 文件存储配置
 file:
   storage:
diff --git a/schoolNewsServ/ai/src/main/java/org/xyzh/ai/client/DifyApiClient.java b/schoolNewsServ/ai/src/main/java/org/xyzh/ai/client/DifyApiClient.java
index 6dfb20a..72060c0 100644
--- a/schoolNewsServ/ai/src/main/java/org/xyzh/ai/client/DifyApiClient.java
+++ b/schoolNewsServ/ai/src/main/java/org/xyzh/ai/client/DifyApiClient.java
@@ -514,6 +514,13 @@ public class DifyApiClient {
                                 }
                             }
                         }
+                        // 流正常读取完毕，如果没有收到 [DONE] 标记，也当作完成
+                        logger.info("SSE流读取完毕");
+                        callback.onComplete();
+                    } catch (java.io.EOFException e) {
+                        // EOFException 通常表示流正常结束（Dify可能没有发送[DONE]标记）
+                        logger.info("SSE流已结束（EOF）");
+                        callback.onComplete();
                     } catch (Exception e) {
                         logger.error("流式响应处理异常", e);
                         callback.onError(e);
diff --git a/schoolNewsServ/ai/src/main/java/org/xyzh/ai/config/DifyConfig.java b/schoolNewsServ/ai/src/main/java/org/xyzh/ai/config/DifyConfig.java
index b66520e..2d4a826 100644
--- a/schoolNewsServ/ai/src/main/java/org/xyzh/ai/config/DifyConfig.java
+++ b/schoolNewsServ/ai/src/main/java/org/xyzh/ai/config/DifyConfig.java
@@ -31,9 +31,9 @@ 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-fwOqGFLTsZtekCQYlOmj9f8x";
+    private String apiKey="app-6VXXDHRC8fiTijeRfnwzOyGn";
 
-    private String knowledgeApiKey="dataset-HeDK9gHBqPnI4rBZ2q2Hm7rV";
+    private String knowledgeApiKey="dataset-nupqKP4LONpzdXmGthIrbjeJ";
 
     /**
      * 请求超时时间（秒）
diff --git a/schoolNewsServ/study/src/main/resources/mapper/LearningRecordMapper.xml b/schoolNewsServ/study/src/main/resources/mapper/LearningRecordMapper.xml
index 732b510..4039bb9 100644
--- a/schoolNewsServ/study/src/main/resources/mapper/LearningRecordMapper.xml
+++ b/schoolNewsServ/study/src/main/resources/mapper/LearningRecordMapper.xml
@@ -148,7 +148,7 @@
                 complete_time = #{completeTime},
             </if>
             <if test="lastLearnTime != null">
-                last_learn_time = #{lastLearnTime},
+                last_learn_time = #{updateTime},
             </if>
             <if test="updater != null">
                 updater = #{updater},
@@ -298,8 +298,8 @@
         ) current_dept ON user_dept.dept_path LIKE CONCAT(current_dept.dept_path, '%')
         </if>
         WHERE lr.deleted = 0
-            AND lr.last_learn_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
-            AND lr.last_learn_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
+            AND lr.update_time &gt;= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
+            AND lr.update_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
         GROUP BY lr.resource_type
         ORDER BY totalDuration DESC
     </select>
@@ -326,8 +326,8 @@
         ) current_dept ON user_dept.dept_path LIKE CONCAT(current_dept.dept_path, '%')
         </if>
         WHERE lr.deleted = 0
-            AND lr.last_learn_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
-            AND lr.last_learn_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
+            AND lr.update_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
+            AND lr.update_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
         GROUP BY lr.user_id, u.username
         ORDER BY totalDuration DESC
         LIMIT 10
@@ -357,8 +357,8 @@
         </if>
         WHERE lr.deleted = 0
             AND lr.resource_type = 2
-            AND lr.last_learn_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
-            AND lr.last_learn_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
+            AND lr.update_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
+            AND lr.update_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
         GROUP BY lr.resource_id, c.name
         ORDER BY learnerCount DESC, totalDuration DESC
         LIMIT 10
@@ -388,8 +388,8 @@
         </if>
         WHERE lr.deleted = 0
             AND lr.resource_type = 1
-            AND lr.last_learn_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
-            AND lr.last_learn_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
+            AND lr.update_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
+            AND lr.update_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
         GROUP BY lr.resource_id, r.title
         ORDER BY learnerCount DESC, totalDuration DESC
         LIMIT 10
@@ -419,7 +419,7 @@
         LEFT JOIN tb_learning_record lr ON tu.user_id = lr.user_id AND tu.task_id = lr.task_id AND lr.deleted = 0
         WHERE tu.deleted = 0
             AND tu.status = 2
-            AND tu.complete_time >= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
+            AND tu.complete_time &gt;= DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY)
             AND tu.complete_time &lt; DATE_ADD(DATE_SUB(CURDATE(), INTERVAL DAYOFWEEK(CURDATE())-1 DAY), INTERVAL 7 DAY)
         GROUP BY tu.user_id, u.username
         ORDER BY completedTaskCount DESC, totalDuration DESC
diff --git a/schoolNewsWeb/src/apis/ai/chat.ts b/schoolNewsWeb/src/apis/ai/chat.ts
index d1d2d7a..28090fb 100644
--- a/schoolNewsWeb/src/apis/ai/chat.ts
+++ b/schoolNewsWeb/src/apis/ai/chat.ts
@@ -127,7 +127,35 @@ export const chatApi = {
 
           // 监听错误事件
           eventSource.addEventListener('error', (event: any) => {
-            const error = new Error(event.data || '对话失败');
+            // 如果 data 为空，说明是正常的流结束信号（有些工作流不发送end事件）
+            if (!event.data || event.data.trim() === '') {
+              console.log('[SSE流结束] 收到空error事件，当作正常结束处理');
+              
+              // 触发结束回调（如果有的话）
+              callback?.onMessageEnd?.({
+                conversationId: request.conversationId,
+                messageId: '',
+                answer: fullMessage
+              } as any);
+              
+              eventSource.close();
+              
+              // 正常结束
+              resolve({
+                code: 200,
+                success: true,
+                login: true,
+                auth: true,
+                data: {
+                  conversationId: request.conversationId,
+                  answer: fullMessage
+                } as any,
+                message: '对话已结束'
+              });
+              return;
+            }
+            
+            const error = new Error(event.data);
             callback?.onError?.(error);
             eventSource.close();
             reject(error);
@@ -358,7 +386,34 @@ export const chatApi = {
 
       // 监听错误事件
       eventSource.addEventListener('error', (event: any) => {
-        const error = new Error(event.data || '重新生成失败');
+        // 如果 data 为空，说明是正常的流结束信号（有些工作流不发送end事件）
+        if (!event.data || event.data.trim() === '') {
+          console.log('[SSE流结束-重新生成] 收到空error事件，当作正常结束处理');
+          
+          // 触发结束回调（如果有的话）
+          callback?.onMessageEnd?.({
+            messageId: messageId,
+            answer: fullMessage
+          } as any);
+          
+          eventSource.close();
+          
+          // 正常结束
+          resolve({
+            code: 200,
+            success: true,
+            login: true,
+            auth: true,
+            data: {
+              messageId: messageId,
+              answer: fullMessage
+            } as any,
+            message: '重新生成已结束'
+          });
+          return;
+        }
+        
+        const error = new Error(event.data);
         callback?.onError?.(error);
         eventSource.close();
         reject(error);
diff --git a/schoolNewsWeb/src/views/admin/manage/study/StudyRecordsView.vue b/schoolNewsWeb/src/views/admin/manage/study/StudyRecordsView.vue
index 4b45a3c..9d6bde8 100644
--- a/schoolNewsWeb/src/views/admin/manage/study/StudyRecordsView.vue
+++ b/schoolNewsWeb/src/views/admin/manage/study/StudyRecordsView.vue
@@ -180,7 +180,14 @@ function initDurationChart(data: any[]) {
         const duration = params.value;
         const hours = Math.floor(duration / 3600);
         const minutes = Math.floor((duration % 3600) / 60);
-        return `${params.name}<br/>学习时长: ${hours}小时${minutes}分钟<br/>学习人数: ${params.data.userCount}人`;
+        const secs = duration % 60;
+        
+        let timeStr = '';
+        if (hours > 0) timeStr += `${hours}小时`;
+        if (minutes > 0) timeStr += `${minutes}分钟`;
+        if (secs > 0 || timeStr === '') timeStr += `${secs}秒`;
+        
+        return `${params.name}<br/>学习时长: ${timeStr}<br/>学习人数: ${params.data.userCount}人`;
       }
     },
     legend: {
@@ -204,7 +211,18 @@ function initDurationChart(data: any[]) {
             const duration = params.value;
             const hours = Math.floor(duration / 3600);
             const minutes = Math.floor((duration % 3600) / 60);
-            return `${params.name}\n${hours}h${minutes}m`;
+            const secs = duration % 60;
+            
+            let timeStr = '';
+            if (hours > 0) {
+              timeStr = `${hours}h${minutes}m`;
+            } else if (minutes > 0) {
+              timeStr = `${minutes}m${secs}s`;
+            } else {
+              timeStr = `${secs}s`;
+            }
+            
+            return `${params.name}\n${timeStr}`;
           }
         },
         emphasis: {
@@ -233,12 +251,26 @@ function initDurationChart(data: any[]) {
 
 // 格式化时长
 function formatDuration(seconds: number): string {
+  if (!seconds || seconds === 0) {
+    return '0秒';
+  }
+  
   const hours = Math.floor(seconds / 3600);
   const minutes = Math.floor((seconds % 3600) / 60);
+  const secs = seconds % 60;
+  
+  let result = '';
   if (hours > 0) {
-    return `${hours}小时${minutes}分钟`;
+    result += `${hours}小时`;
   }
-  return `${minutes}分钟`;
+  if (minutes > 0) {
+    result += `${minutes}分钟`;
+  }
+  if (secs > 0 || result === '') {
+    result += `${secs}秒`;
+  }
+  
+  return result;
 }
 
 // 获取排名样式
@@ -294,7 +326,7 @@ function getRankClass(index: number): string {
 
         &:hover {
           background: #e8edf3;
-          transform: translateX(5px);
+          // transform: translateX(5px);
         }
 
         .rank {