文章、课程标签的默认封面

schoolNewsServ/.bin/mysql/sql/createTableLearning.sql

@@ -31,9 +31,7 @@ CREATE TABLE `tb_learning_task_tag` (
   PRIMARY KEY (`id`),
   UNIQUE KEY `uk_task_tag` (`task_id`, `tag_id`),
   KEY `idx_task_id` (`task_id`),
-  KEY `idx_tag_id` (`tag_id`),
+  KEY `idx_tag_id` (`tag_id`)
-  CONSTRAINT `fk_task_tag_task` FOREIGN KEY (`task_id`) REFERENCES `tb_learning_task` (`task_id`) ON DELETE CASCADE,
-  CONSTRAINT `fk_task_tag_tag` FOREIGN KEY (`tag_id`) REFERENCES `tb_tag` (`tag_id`) ON DELETE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='学习任务标签关联表';
 
 

schoolNewsServ/.bin/mysql/sql/createTableResource.sql

@@ -99,6 +99,22 @@ CREATE TABLE `tb_tag` (
   KEY `idx_tag_type` (`tag_type`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='标签表';
 
+DROP TABLE IF EXISTS `tb_tag_default_cover`;
+CREATE TABLE IF NOT EXISTS `tb_tag_default_cover` (
+  `id` VARCHAR(32) NOT NULL COMMENT '主键ID',
+  `tag_id` VARCHAR(32) NOT NULL COMMENT '标签ID',
+  `cover_image` VARCHAR(255) NOT NULL COMMENT '封面图片fileID',
+  `order_num` INT DEFAULT 0 COMMENT '排序号',
+  `is_active` TINYINT(1) DEFAULT 1 COMMENT '是否启用：0-禁用，1-启用',
+  `creator` VARCHAR(32) DEFAULT NULL COMMENT '创建人',
+  `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updater` VARCHAR(32) DEFAULT NULL COMMENT '更新人',
+  `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  PRIMARY KEY (`id`),
+  INDEX `idx_tag_id` (`tag_id`),
+  INDEX `idx_active` (`is_active`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='标签默认封面配置表';
+
 -- 资源标签关联表
 DROP TABLE IF EXISTS `tb_resource_tag`;
 CREATE TABLE `tb_resource_tag` (

schoolNewsServ/api/api-news/src/main/java/org/xyzh/api/news/tag/TagDefaultCoverService.java

@@ -0,0 +1,65 @@
+package org.xyzh.api.news.tag;
+
+import org.xyzh.common.core.domain.ResultDomain;
+import org.xyzh.common.dto.resource.TbTagDefaultCover;
+
+import java.util.List;
+
+/**
+ * @description 标签默认封面服务接口
+ * @author system
+ * @since 2025-12-24
+ */
+public interface TagDefaultCoverService {
+    
+    /**
+     * 根据标签ID获取启用的默认封面列表
+     * @param tagID 标签ID
+     * @return 默认封面列表
+     */
+    ResultDomain<TbTagDefaultCover> getDefaultCovers(String tagID);
+    
+    /**
+     * 根据标签ID获取所有默认封面列表（包括禁用的）
+     * @param tagID 标签ID
+     * @return 默认封面列表
+     */
+    ResultDomain<TbTagDefaultCover> getAllDefaultCovers(String tagID);
+    
+    /**
+     * 添加默认封面
+     * @param cover 默认封面对象
+     * @return 操作结果
+     */
+    ResultDomain<String> addDefaultCover(TbTagDefaultCover cover);
+    
+    /**
+     * 更新默认封面
+     * @param cover 默认封面对象
+     * @return 操作结果
+     */
+    ResultDomain<String> updateDefaultCover(TbTagDefaultCover cover);
+    
+    /**
+     * 删除默认封面
+     * @param id 主键ID
+     * @return 操作结果
+     */
+    ResultDomain<String> deleteDefaultCover(String id);
+    
+    /**
+     * 批量添加默认封面
+     * @param covers 默认封面列表
+     * @return 操作结果
+     */
+    ResultDomain<String> batchAddDefaultCovers(List<TbTagDefaultCover> covers);
+    
+    /**
+     * @description 根据标签ID删除所有默认封面
+     * @param tagID 标签ID
+     * @return ResultDomain<String> 操作结果
+     * @author system
+     * @since 2025-12-24
+     */
+    ResultDomain<String> deleteDefaultCoversByTagId(String tagID);
+}

schoolNewsServ/common/common-dto/src/main/java/org/xyzh/common/dto/resource/TbTagDefaultCover.java

@@ -0,0 +1,106 @@
+package org.xyzh.common.dto.resource;
+
+import org.xyzh.common.dto.BaseDTO;
+
+/**
+ * @description 标签默认封面配置表
+ * @filename TbTagDefaultCover.java
+ * @author system
+ * @copyright xyzh
+ * @since 2025-12-24
+ */
+public class TbTagDefaultCover extends BaseDTO {
+    
+    private static final long serialVersionUID = 1L;
+    
+    /**
+     * 标签ID
+     */
+    private String tagID;
+    
+    /**
+     * 封面图片fileID
+     */
+    private String coverImage;
+    
+    /**
+     * 排序号
+     */
+    private Integer orderNum;
+    
+    /**
+     * 是否启用：0-禁用，1-启用
+     */
+    private Integer isActive;
+    
+    /**
+     * 创建人
+     */
+    private String creator;
+    
+    /**
+     * 更新人
+     */
+    private String updater;
+
+    public String getTagID() {
+        return tagID;
+    }
+
+    public void setTagID(String tagID) {
+        this.tagID = tagID;
+    }
+
+    public String getCoverImage() {
+        return coverImage;
+    }
+
+    public void setCoverImage(String coverImage) {
+        this.coverImage = coverImage;
+    }
+
+    public Integer getOrderNum() {
+        return orderNum;
+    }
+
+    public void setOrderNum(Integer orderNum) {
+        this.orderNum = orderNum;
+    }
+
+    public Integer getIsActive() {
+        return isActive;
+    }
+
+    public void setIsActive(Integer isActive) {
+        this.isActive = isActive;
+    }
+
+    public String getCreator() {
+        return creator;
+    }
+
+    public void setCreator(String creator) {
+        this.creator = creator;
+    }
+
+    public String getUpdater() {
+        return updater;
+    }
+
+    public void setUpdater(String updater) {
+        this.updater = updater;
+    }
+
+    @Override
+    public String toString() {
+        return "TbTagDefaultCover{" +
+                "id='" + getId() + '\'' +
+                ", tagID='" + tagID + '\'' +
+                ", coverImage='" + coverImage + '\'' +
+                ", orderNum=" + orderNum +
+                ", isActive=" + isActive +
+                ", creator='" + creator + '\'' +
+                ", createTime=" + getCreateTime() +
+                '}';
+    }
+}

schoolNewsServ/common/common-dto/src/main/java/org/xyzh/common/dto/study/TbCourse.java

@@ -69,6 +69,11 @@ public class TbCourse extends BaseDTO {
      */
     private Integer orderNum;
     
+    /**
+     * @description 标签ID（用于获取默认封面）
+     */
+    private String tagID;
+    
     /**
      * @description 创建者
      */
@@ -182,6 +187,14 @@ public class TbCourse extends BaseDTO {
         this.orderNum = orderNum;
     }
 
+    public String getTagID() {
+        return tagID;
+    }
+
+    public void setTagID(String tagID) {
+        this.tagID = tagID;
+    }
+
     public String getCreator() {
         return creator;
     }

schoolNewsServ/common/common-dto/src/main/java/org/xyzh/common/vo/CourseItemVO.java

@@ -68,6 +68,11 @@ public class CourseItemVO extends BaseDTO {
      */
     private Integer learnCount;
     
+    /**
+     * @description 标签ID（用于获取默认封面和分类）
+     */
+    private String tagID;
+    
     /**
      * @description 课程创建时间
      */
@@ -235,6 +240,14 @@ public class CourseItemVO extends BaseDTO {
         this.learnCount = learnCount;
     }
 
+    public String getTagID() {
+        return tagID;
+    }
+
+    public void setTagID(String tagID) {
+        this.tagID = tagID;
+    }
+
     public Date getCreateTime() {
         return createTime;
     }
@@ -390,6 +403,7 @@ public class CourseItemVO extends BaseDTO {
         course.setId(this.getId());
         course.setCourseID(this.courseID);
         course.setName(this.name);
+        course.setTagID(this.tagID);
         course.setCoverImage(this.coverImage);
         course.setDescription(this.description);
         course.setDuration(this.duration);
@@ -423,6 +437,7 @@ public class CourseItemVO extends BaseDTO {
         vo.setViewCount(course.getViewCount());
         vo.setLearnCount(course.getLearnCount());
         vo.setCreateTime(course.getCreateTime());
+        vo.setTagID(course.getTagID());
         return vo;
     }
     

schoolNewsServ/news/src/main/java/org/xyzh/news/controller/TagController.java

@@ -5,9 +5,11 @@ import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 import org.xyzh.api.news.tag.TagService;
+import org.xyzh.api.news.tag.TagDefaultCoverService;
 import org.xyzh.common.core.domain.ResultDomain;
 import org.xyzh.common.dto.resource.TbTag;
 import org.xyzh.common.dto.resource.TbResourceTag;
+import org.xyzh.common.dto.resource.TbTagDefaultCover;
 
 import java.util.List;
 
@@ -26,6 +28,9 @@ public class TagController {
     @Autowired
     private TagService tagService;
     
+    @Autowired
+    private TagDefaultCoverService tagDefaultCoverService;
+
     /**
      * 获取标签列表
      */
@@ -138,4 +143,62 @@ public class TagController {
     public ResultDomain<String> getResourcesByTag(@PathVariable("tagID") String tagID) {
         return tagService.getResourcesByTag(tagID);
     }
+    
+    // ----------------标签默认封面相关--------------------------------
+    
+    /**
+     * 获取标签的启用默认封面列表
+     */
+    @GetMapping("/tag/{tagID}/default-covers")
+    public ResultDomain<TbTagDefaultCover> getDefaultCovers(@PathVariable("tagID") String tagID) {
+        return tagDefaultCoverService.getDefaultCovers(tagID);
+    }
+    
+    /**
+     * 获取标签的所有默认封面列表（管理端使用）
+     */
+    @GetMapping("/tag/{tagID}/all-default-covers")
+    public ResultDomain<TbTagDefaultCover> getAllDefaultCovers(@PathVariable("tagID") String tagID) {
+        return tagDefaultCoverService.getAllDefaultCovers(tagID);
+    }
+    
+    /**
+     * 添加默认封面
+     */
+    @PostMapping("/default-cover")
+    public ResultDomain<String> addDefaultCover(@RequestBody TbTagDefaultCover cover) {
+        return tagDefaultCoverService.addDefaultCover(cover);
+    }
+    
+    /**
+     * 更新默认封面
+     */
+    @PutMapping("/default-cover")
+    public ResultDomain<String> updateDefaultCover(@RequestBody TbTagDefaultCover cover) {
+        return tagDefaultCoverService.updateDefaultCover(cover);
+    }
+    
+    /**
+     * 删除默认封面
+     */
+    @DeleteMapping("/default-cover/{id}")
+    public ResultDomain<String> deleteDefaultCover(@PathVariable("id") String id) {
+        return tagDefaultCoverService.deleteDefaultCover(id);
+    }
+    
+    /**
+     * 批量添加默认封面
+     */
+    @PostMapping("/default-covers/batch")
+    public ResultDomain<String> batchAddDefaultCovers(@RequestBody List<TbTagDefaultCover> covers) {
+        return tagDefaultCoverService.batchAddDefaultCovers(covers);
+    }
+    
+    /**
+     * 根据标签ID删除所有默认封面
+     */
+    @DeleteMapping("/tag/{tagID}/default-covers")
+    public ResultDomain<String> deleteDefaultCoversByTagId(@PathVariable("tagID") String tagID) {
+        return tagDefaultCoverService.deleteDefaultCoversByTagId(tagID);
+    }
 }

schoolNewsServ/news/src/main/java/org/xyzh/news/mapper/TagDefaultCoverMapper.java

@@ -0,0 +1,79 @@
+package org.xyzh.news.mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.xyzh.common.dto.resource.TbTagDefaultCover;
+
+import java.util.List;
+
+/**
+ * @description 标签默认封面Mapper接口
+ * @author system
+ * @since 2025-12-24
+ */
+@Mapper
+public interface TagDefaultCoverMapper {
+    
+    /**
+     * @description 根据标签ID查询默认封面列表
+     * @param tagId 标签ID
+     * @return List<TbTagDefaultCover> 默认封面列表
+     * @author system
+     * @since 2025-12-24
+     */
+    List<TbTagDefaultCover> selectDefaultCoversByTagId(@Param("tagId") String tagId);
+    
+    /**
+     * @description 根据标签ID查询启用的默认封面列表
+     * @param tagId 标签ID
+     * @return List<TbTagDefaultCover> 启用的默认封面列表
+     * @author system
+     * @since 2025-12-24
+     */
+    List<TbTagDefaultCover> selectActiveDefaultCoversByTagId(@Param("tagId") String tagId);
+    
+    /**
+     * @description 插入默认封面
+     * @param cover 默认封面对象
+     * @return int 影响行数
+     * @author system
+     * @since 2025-12-24
+     */
+    int insertDefaultCover(TbTagDefaultCover cover);
+    
+    /**
+     * @description 更新默认封面
+     * @param cover 默认封面对象
+     * @return int 影响行数
+     * @author system
+     * @since 2025-12-24
+     */
+    int updateDefaultCover(TbTagDefaultCover cover);
+    
+    /**
+     * @description 删除默认封面
+     * @param id 主键ID
+     * @return int 影响行数
+     * @author system
+     * @since 2025-12-24
+     */
+    int deleteDefaultCover(@Param("id") String id);
+    
+    /**
+     * @description 根据标签ID删除所有默认封面
+     * @param tagId 标签ID
+     * @return int 影响行数
+     * @author system
+     * @since 2025-12-24
+     */
+    int deleteDefaultCoversByTagId(@Param("tagId") String tagId);
+    
+    /**
+     * @description 根据ID查询默认封面
+     * @param id 主键ID
+     * @return TbTagDefaultCover 默认封面对象
+     * @author system
+     * @since 2025-12-24
+     */
+    TbTagDefaultCover selectDefaultCoverById(@Param("id") String id);
+}

schoolNewsServ/news/src/main/java/org/xyzh/news/service/impl/NCTagDefaultCoverServiceImpl.java

@@ -0,0 +1,217 @@
+package org.xyzh.news.service.impl;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.xyzh.api.news.tag.TagDefaultCoverService;
+import org.xyzh.common.core.domain.ResultDomain;
+import org.xyzh.common.dto.resource.TbTagDefaultCover;
+import org.xyzh.news.mapper.TagDefaultCoverMapper;
+
+import java.util.List;
+import java.util.UUID;
+
+/**
+ * @description 标签默认封面服务实现
+ * @author system
+ * @since 2025-12-24
+ */
+@Service
+public class NCTagDefaultCoverServiceImpl implements TagDefaultCoverService {
+    
+    private static final Logger logger = LoggerFactory.getLogger(NCTagDefaultCoverServiceImpl.class);
+    
+    @Autowired
+    private TagDefaultCoverMapper tagDefaultCoverMapper;
+    
+    @Override
+    public ResultDomain<TbTagDefaultCover> getDefaultCovers(String tagID) {
+        ResultDomain<TbTagDefaultCover> result = new ResultDomain<>();
+        try {
+            if (tagID == null || tagID.trim().isEmpty()) {
+                result.fail("标签ID不能为空");
+                return result;
+            }
+            
+            List<TbTagDefaultCover> covers = tagDefaultCoverMapper.selectActiveDefaultCoversByTagId(tagID);
+            logger.info("获取标签[{}]的默认封面列表，数量：{}", tagID, covers.size());
+            
+            result.success("获取成功", covers);
+            return result;
+        } catch (Exception e) {
+            logger.error("获取标签默认封面列表失败", e);
+            result.fail("获取默认封面列表失败：" + e.getMessage());
+            return result;
+        }
+    }
+    
+    @Override
+    public ResultDomain<TbTagDefaultCover> getAllDefaultCovers(String tagID) {
+        ResultDomain<TbTagDefaultCover> result = new ResultDomain<>();
+        try {
+            if (tagID == null || tagID.trim().isEmpty()) {
+                result.fail("标签ID不能为空");
+                return result;
+            }
+            
+            List<TbTagDefaultCover> covers = tagDefaultCoverMapper.selectDefaultCoversByTagId(tagID);
+            logger.info("获取标签[{}]的所有默认封面列表，数量：{}", tagID, covers.size());
+            
+            result.success("获取成功", covers);
+            return result;
+        } catch (Exception e) {
+            logger.error("获取标签所有默认封面列表失败", e);
+            result.fail("获取默认封面列表失败：" + e.getMessage());
+            return result;
+        }
+    }
+    
+    @Override
+    @Transactional
+    public ResultDomain<String> addDefaultCover(TbTagDefaultCover cover) {
+        ResultDomain<String> result = new ResultDomain<>();
+        try {
+            if (cover.getTagID() == null || cover.getTagID().trim().isEmpty()) {
+                result.fail("标签ID不能为空");
+                return result;
+            }
+            if (cover.getCoverImage() == null || cover.getCoverImage().trim().isEmpty()) {
+                result.fail("封面图片不能为空");
+                return result;
+            }
+            
+            cover.setId(UUID.randomUUID().toString().replace("-", ""));
+            if (cover.getIsActive() == null) {
+                cover.setIsActive(1);
+            }
+            if (cover.getOrderNum() == null) {
+                cover.setOrderNum(0);
+            }
+            
+            int rows = tagDefaultCoverMapper.insertDefaultCover(cover);
+            if (rows > 0) {
+                logger.info("添加标签默认封面成功，ID：{}", cover.getId());
+                result.success("添加成功", cover.getId());
+                return result;
+            } else {
+                result.fail("添加失败");
+                return result;
+            }
+        } catch (Exception e) {
+            logger.error("添加标签默认封面失败", e);
+            result.fail("添加失败：" + e.getMessage());
+            return result;
+        }
+    }
+    
+    @Override
+    @Transactional
+    public ResultDomain<String> updateDefaultCover(TbTagDefaultCover cover) {
+        ResultDomain<String> result = new ResultDomain<>();
+        try {
+            if (cover.getId() == null || cover.getId().trim().isEmpty()) {
+                result.fail("ID不能为空");
+                return result;
+            }
+            
+            int rows = tagDefaultCoverMapper.updateDefaultCover(cover);
+            if (rows > 0) {
+                logger.info("更新标签默认封面成功，ID：{}", cover.getId());
+                result.success("更新成功", cover.getId());
+                return result;
+            } else {
+                result.fail("更新失败，记录不存在");
+                return result;
+            }
+        } catch (Exception e) {
+            logger.error("更新标签默认封面失败", e);
+            result.fail("更新失败：" + e.getMessage());
+            return result;
+        }
+    }
+    
+    @Override
+    @Transactional
+    public ResultDomain<String> deleteDefaultCover(String id) {
+        ResultDomain<String> result = new ResultDomain<>();
+        try {
+            if (id == null || id.trim().isEmpty()) {
+                result.fail("ID不能为空");
+                return result;
+            }
+            
+            int rows = tagDefaultCoverMapper.deleteDefaultCover(id);
+            if (rows > 0) {
+                logger.info("删除标签默认封面成功，ID：{}", id);
+                result.success("删除成功", id);
+                return result;
+            } else {
+                result.fail("删除失败，记录不存在");
+                return result;
+            }
+        } catch (Exception e) {
+            logger.error("删除标签默认封面失败", e);
+            result.fail("删除失败：" + e.getMessage());
+            return result;
+        }
+    }
+    
+    @Override
+    @Transactional
+    public ResultDomain<String> batchAddDefaultCovers(List<TbTagDefaultCover> covers) {
+        ResultDomain<String> result = new ResultDomain<>();
+        try {
+            if (covers == null || covers.isEmpty()) {
+                result.fail("封面列表不能为空");
+                return result;
+            }
+            
+            int successCount = 0;
+            for (TbTagDefaultCover cover : covers) {
+                cover.setId(UUID.randomUUID().toString().replace("-", ""));
+                if (cover.getIsActive() == null) {
+                    cover.setIsActive(1);
+                }
+                if (cover.getOrderNum() == null) {
+                    cover.setOrderNum(0);
+                }
+                
+                int rows = tagDefaultCoverMapper.insertDefaultCover(cover);
+                if (rows > 0) {
+                    successCount++;
+                }
+            }
+            
+            logger.info("批量添加标签默认封面完成，成功：{}/总数：{}", successCount, covers.size());
+            result.success("批量添加成功，成功数量：" + successCount, String.valueOf(successCount));
+            return result;
+        } catch (Exception e) {
+            logger.error("批量添加标签默认封面失败", e);
+            result.fail("批量添加失败：" + e.getMessage());
+            return result;
+        }
+    }
+    
+    @Override
+    @Transactional
+    public ResultDomain<String> deleteDefaultCoversByTagId(String tagID) {
+        ResultDomain<String> result = new ResultDomain<>();
+        try {
+            if (tagID == null || tagID.trim().isEmpty()) {
+                result.fail("标签ID不能为空");
+                return result;
+            }
+            
+            int rows = tagDefaultCoverMapper.deleteDefaultCoversByTagId(tagID);
+            logger.info("删除标签[{}]的所有默认封面成功，删除数量：{}", tagID, rows);
+            result.success("删除成功", String.valueOf(rows));
+            return result;
+        } catch (Exception e) {
+            logger.error("删除标签默认封面失败", e);
+            result.fail("删除失败：" + e.getMessage());
+            return result;
+        }
+    }
+}

schoolNewsServ/news/src/main/resources/mapper/TagDefaultCoverMapper.xml

@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="org.xyzh.news.mapper.TagDefaultCoverMapper">
+
+    <!-- 基础结果映射 -->
+    <resultMap id="BaseResultMap" type="org.xyzh.common.dto.resource.TbTagDefaultCover">
+        <id column="id" property="id" jdbcType="VARCHAR"/>
+        <result column="tag_id" property="tagID" jdbcType="VARCHAR"/>
+        <result column="cover_image" property="coverImage" jdbcType="VARCHAR"/>
+        <result column="order_num" property="orderNum" jdbcType="INTEGER"/>
+        <result column="is_active" property="isActive" jdbcType="TINYINT"/>
+        <result column="creator" property="creator" jdbcType="VARCHAR"/>
+        <result column="create_time" property="createTime" jdbcType="TIMESTAMP"/>
+        <result column="updater" property="updater" jdbcType="VARCHAR"/>
+        <result column="update_time" property="updateTime" jdbcType="TIMESTAMP"/>
+    </resultMap>
+
+    <!-- 基础字段 -->
+    <sql id="Base_Column_List">
+        id, tag_id, cover_image, order_num, is_active, creator, create_time, updater, update_time
+    </sql>
+
+    <!-- 根据标签ID查询默认封面列表 -->
+    <select id="selectDefaultCoversByTagId" resultMap="BaseResultMap">
+        SELECT <include refid="Base_Column_List"/>
+        FROM tb_tag_default_cover
+        WHERE tag_id = #{tagId}
+        ORDER BY order_num ASC, create_time DESC
+    </select>
+
+    <!-- 根据标签ID查询启用的默认封面列表 -->
+    <select id="selectActiveDefaultCoversByTagId" resultMap="BaseResultMap">
+        SELECT <include refid="Base_Column_List"/>
+        FROM tb_tag_default_cover
+        WHERE tag_id = #{tagId} AND is_active = 1
+        ORDER BY order_num ASC, create_time DESC
+    </select>
+
+    <!-- 根据ID查询默认封面 -->
+    <select id="selectDefaultCoverById" resultMap="BaseResultMap">
+        SELECT <include refid="Base_Column_List"/>
+        FROM tb_tag_default_cover
+        WHERE id = #{id}
+    </select>
+
+    <!-- 插入默认封面 -->
+    <insert id="insertDefaultCover">
+        INSERT INTO tb_tag_default_cover
+        <trim prefix="(" suffix=")" suffixOverrides=",">
+            <if test="id != null">id,</if>
+            <if test="tagID != null">tag_id,</if>
+            <if test="coverImage != null">cover_image,</if>
+            <if test="orderNum != null">order_num,</if>
+            <if test="isActive != null">is_active,</if>
+            <if test="creator != null">creator,</if>
+            create_time,
+        </trim>
+        <trim prefix="VALUES (" suffix=")" suffixOverrides=",">
+            <if test="id != null">#{id},</if>
+            <if test="tagID != null">#{tagID},</if>
+            <if test="coverImage != null">#{coverImage},</if>
+            <if test="orderNum != null">#{orderNum},</if>
+            <if test="isActive != null">#{isActive},</if>
+            <if test="creator != null">#{creator},</if>
+            NOW(),
+        </trim>
+    </insert>
+
+    <!-- 更新默认封面 -->
+    <update id="updateDefaultCover">
+        UPDATE tb_tag_default_cover
+        <set>
+            <if test="coverImage != null">cover_image = #{coverImage},</if>
+            <if test="orderNum != null">order_num = #{orderNum},</if>
+            <if test="isActive != null">is_active = #{isActive},</if>
+            <if test="updater != null">updater = #{updater},</if>
+            update_time = NOW()
+        </set>
+        WHERE id = #{id}
+    </update>
+
+    <!-- 删除默认封面 -->
+    <delete id="deleteDefaultCover">
+        DELETE FROM tb_tag_default_cover WHERE id = #{id}
+    </delete>
+
+    <!-- 根据标签ID删除所有默认封面 -->
+    <delete id="deleteDefaultCoversByTagId">
+        DELETE FROM tb_tag_default_cover WHERE tag_id = #{tagId}
+    </delete>
+
+</mapper>

schoolNewsServ/study/src/main/java/org/xyzh/study/service/impl/SCCourseServiceImpl.java

@@ -22,13 +22,15 @@ import org.xyzh.common.dto.resource.TbResource;
 import org.xyzh.common.dto.study.TbCourse;
 import org.xyzh.common.dto.study.TbCourseChapter;
 import org.xyzh.common.dto.study.TbCourseNode;
+import org.xyzh.common.dto.study.TbCourseTag;
 import org.xyzh.common.dto.user.TbSysUser;
 import org.xyzh.common.utils.IDUtils;
 import org.xyzh.common.vo.CourseItemVO;
 import org.xyzh.common.vo.ResourceVO;
-import org.xyzh.study.mapper.CourseMapper;
 import org.xyzh.study.mapper.CourseChapterMapper;
+import org.xyzh.study.mapper.CourseMapper;
 import org.xyzh.study.mapper.CourseNodeMapper;
+import org.xyzh.study.mapper.CourseTagMapper;
 import org.xyzh.study.service.SCCourseService;
 import org.xyzh.system.utils.LoginUtil;
 import org.xyzh.api.news.resource.ResourceAuditService;
@@ -58,6 +60,9 @@ public class SCCourseServiceImpl implements SCCourseService {
     @Autowired
     private CourseNodeMapper courseNodeMapper;
 
+    @Autowired
+    private CourseTagMapper courseTagMapper;
+
     @Autowired
     private ResourceAuditService auditService;
 
@@ -231,6 +236,22 @@ public class SCCourseServiceImpl implements SCCourseService {
             logger.error("创建课程权限异常，但不影响课程创建: {}", e.getMessage(), e);
         }
         
+        // 处理课程标签关联
+        if (courseItemVO.getTagID() != null && !courseItemVO.getTagID().isEmpty()) {
+            try {
+                TbCourseTag courseTag = new TbCourseTag();
+                courseTag.setId(IDUtils.generateID());
+                courseTag.setCourseID(courseID);
+                courseTag.setTagID(courseItemVO.getTagID());
+                courseTag.setCreator(user.getId());
+                courseTag.setCreateTime(now);
+                courseTagMapper.insertCourseTag(courseTag);
+                logger.info("创建课程标签关联成功: courseID={}, tagID={}", courseID, courseItemVO.getTagID());
+            } catch (Exception e) {
+                logger.error("创建课程标签关联失败: {}", e.getMessage(), e);
+            }
+        }
+        
         resultDomain.success("创建课程成功", courseItemVO);
         return resultDomain;
     }
@@ -259,6 +280,34 @@ public class SCCourseServiceImpl implements SCCourseService {
         course.setUpdateTime(now);
         courseMapper.updateCourse(course);
         
+        // 1.5. 处理课程标签关联
+        if (courseItemVO.getTagID() != null && !courseItemVO.getTagID().isEmpty()) {
+            try {
+                // 先删除旧的标签关联
+                courseTagMapper.deleteByCourseId(courseID);
+                
+                // 创建新的标签关联
+                TbCourseTag courseTag = new TbCourseTag();
+                courseTag.setId(IDUtils.generateID());
+                courseTag.setCourseID(courseID);
+                courseTag.setTagID(courseItemVO.getTagID());
+                courseTag.setCreator(user.getId());
+                courseTag.setCreateTime(now);
+                courseTagMapper.insertCourseTag(courseTag);
+                logger.info("更新课程标签关联成功: courseID={}, tagID={}", courseID, courseItemVO.getTagID());
+            } catch (Exception e) {
+                logger.error("更新课程标签关联失败: {}", e.getMessage(), e);
+            }
+        } else {
+            // 如果没有tagID，删除所有标签关联
+            try {
+                courseTagMapper.deleteByCourseId(courseID);
+                logger.info("清空课程标签关联: courseID={}", courseID);
+            } catch (Exception e) {
+                logger.error("清空课程标签关联失败: {}", e.getMessage(), e);
+            }
+        }
+        
         // 2. 处理章节和节点
         List<CourseItemVO> newChapterVOs = courseItemVO.getChapters();
         if (newChapterVOs == null) {

schoolNewsServ/study/src/main/resources/mapper/CourseMapper.xml

@@ -16,6 +16,7 @@
         <result column="view_count" property="viewCount" jdbcType="INTEGER"/>
         <result column="learn_count" property="learnCount" jdbcType="INTEGER"/>
         <result column="order_num" property="orderNum" jdbcType="INTEGER"/>
+        <result column="tag_id" property="tagID" jdbcType="VARCHAR"/>
         <result column="creator" property="creator" jdbcType="VARCHAR"/>
         <result column="updater" property="updater" jdbcType="VARCHAR"/>
         <result column="create_time" property="createTime" jdbcType="TIMESTAMP"/>
@@ -26,9 +27,9 @@
 
     <!-- 基础字段 -->
     <sql id="Base_Column_List">
-        id, course_id, name, cover_image, description, content, duration, 
+        c.id, c.course_id, c.name, c.cover_image, c.description, c.content, c.duration, 
-        teacher, status, view_count, learn_count, order_num, creator, updater, 
+        c.teacher, c.status, c.view_count, c.learn_count, c.order_num, ct.tag_id, c.creator, c.updater, 
-        create_time, update_time, delete_time, deleted
+        c.create_time, c.update_time, c.delete_time, c.deleted
     </sql>
 
     <!-- 通用条件 -->
@@ -111,8 +112,9 @@
 
     <!-- selectCourses - 添加权限过滤 -->
     <select id="selectCourses" resultMap="BaseResultMap">
-        SELECT DISTINCT c.*
+        SELECT DISTINCT <include refid="Base_Column_List" />
         FROM tb_course c
+        LEFT JOIN tb_course_tag ct ON c.course_id = ct.course_id
         <include refid="Permission_Filter"/>
         WHERE c.deleted = 0
             <if test="filter.courseID != null and filter.courseID != ''">
@@ -134,8 +136,9 @@
     <select id="selectByCourseId" resultMap="BaseResultMap">
         SELECT
         <include refid="Base_Column_List" />
-        FROM tb_course
+        FROM tb_course c
-        WHERE course_id = #{courseId} AND deleted = 0
+        LEFT JOIN tb_course_tag ct ON c.course_id = ct.course_id
+        WHERE c.course_id = #{courseId} AND c.deleted = 0
     </select>
 
     <!-- 根据课程名称查询课程 -->
@@ -316,8 +319,9 @@
     <!-- 分页查询课程 -->
     <!-- selectCoursesPage - 添加权限过滤 -->
     <select id="selectCoursesPage" resultMap="BaseResultMap">
-        SELECT DISTINCT c.*
+        SELECT DISTINCT <include refid="Base_Column_List" />
         FROM tb_course c
+        LEFT JOIN tb_course_tag ct ON c.course_id = ct.course_id
         <include refid="Permission_Filter"/>
         WHERE c.deleted = 0
             <if test="filter != null">

schoolNewsWeb/src/apis/resource/resourceTag.ts

@@ -147,6 +147,78 @@ export const resourceTagApi = {
   async getResourcesByTag(tagID: string): Promise<ResultDomain<string>> {
     const response = await api.get<string>(`/news/tags/tag/${tagID}/resources`);
     return response.data;
+  },
+
+  // ==================== 标签默认封面操作 ====================
+
+  /**
+   * 获取标签的启用默认封面列表
+   * @param tagID 标签ID
+   * @returns Promise<ResultDomain<any>>
+   */
+  async getDefaultCovers(tagID: string): Promise<ResultDomain<any>> {
+    const response = await api.get<any>(`/news/tags/tag/${tagID}/default-covers`);
+    return response.data;
+  },
+
+  /**
+   * 获取标签的所有默认封面列表（管理端使用）
+   * @param tagID 标签ID
+   * @returns Promise<ResultDomain<any>>
+   */
+  async getAllDefaultCovers(tagID: string): Promise<ResultDomain<any>> {
+    const response = await api.get<any>(`/news/tags/tag/${tagID}/all-default-covers`);
+    return response.data;
+  },
+
+  /**
+   * 添加默认封面
+   * @param cover 默认封面对象
+   * @returns Promise<ResultDomain<string>>
+   */
+  async addDefaultCover(cover: any): Promise<ResultDomain<string>> {
+    const response = await api.post<string>('/news/tags/default-cover', cover);
+    return response.data;
+  },
+
+  /**
+   * 更新默认封面
+   * @param cover 默认封面对象
+   * @returns Promise<ResultDomain<string>>
+   */
+  async updateDefaultCover(cover: any): Promise<ResultDomain<string>> {
+    const response = await api.put<string>('/news/tags/default-cover', cover);
+    return response.data;
+  },
+
+  /**
+   * 删除默认封面
+   * @param id 主键ID
+   * @returns Promise<ResultDomain<string>>
+   */
+  async deleteDefaultCover(id: string): Promise<ResultDomain<string>> {
+    const response = await api.delete<string>(`/news/tags/default-cover/${id}`);
+    return response.data;
+  },
+
+  /**
+   * 批量添加默认封面
+   * @param covers 默认封面列表
+   * @returns Promise<ResultDomain<string>>
+   */
+  async batchAddDefaultCovers(covers: any[]): Promise<ResultDomain<string>> {
+    const response = await api.post<string>('/news/tags/default-covers/batch', covers);
+    return response.data;
+  },
+
+  /**
+   * 根据标签ID删除所有默认封面
+   * @param tagID 标签ID
+   * @returns Promise<ResultDomain<string>>
+   */
+  async deleteDefaultCoversByTagId(tagID: string): Promise<ResultDomain<string>> {
+    const response = await api.delete<string>(`/news/tags/tag/${tagID}/default-covers`);
+    return response.data;
   }
 };
 

schoolNewsWeb/src/types/study/index.ts

@@ -34,6 +34,8 @@ export interface Course extends BaseDTO {
   learnCount?: number;
   /** 排序号 */
   orderNum?: number;
+  /** 标签ID（用于获取默认封面） */
+  tagID?: string;
   /** 创建者 */
   creator?: string;
   /** 更新者 */
@@ -144,6 +146,8 @@ export interface CourseItemVO extends BaseDTO {
   viewCount?: number;
   /** 学习人数 */
   learnCount?: number;
+  /** 标签ID（用于获取默认封面和分类） */
+  tagID?: string;
   /** 课程创建时间 */
   createTime?: string;
 
@@ -342,6 +346,8 @@ export interface TaskItemVO extends LearningTask {
   viewCount?: number;
   /** 发布时间（用于搜索结果展示） */
   publishTime?: Date | string;
+  /** 标签ID（用于获取默认封面） */
+  tagID?: string;
 }
 
 /**

schoolNewsWeb/src/utils/defaultCover.ts

@@ -0,0 +1,82 @@
+/**
+ * @description 默认封面工具函数
+ * @filename defaultCover.ts
+ * @author system
+ * @since 2025-12-24
+ */
+
+import { resourceTagApi } from '@/apis/resource/resourceTag';
+import { FILE_DOWNLOAD_URL } from '@/config';
+import defaultArticleImg from '@/assets/imgs/article-default.png';
+
+// 缓存标签默认封面，避免重复请求
+const tagCoverCache: Map<string, string[]> = new Map();
+
+/**
+ * 根据标签ID获取随机默认封面
+ * @param tagID 标签ID
+ * @returns Promise<string> 封面URL
+ */
+export async function getRandomDefaultCover(tagID: string | undefined): Promise<string> {
+    // 如果没有tagID，返回默认封面
+    if (!tagID) {
+        return defaultArticleImg;
+    }
+
+    try {
+        // 检查缓存
+        if (tagCoverCache.has(tagID)) {
+            const covers = tagCoverCache.get(tagID)!;
+            if (covers.length > 0) {
+                // 随机选择一个
+                const randomIndex = Math.floor(Math.random() * covers.length);
+                return covers[randomIndex];
+            }
+            return defaultArticleImg;
+        }
+
+        // 从后端获取
+        const result = await resourceTagApi.getDefaultCovers(tagID);
+        
+        if (result.success && result.dataList && result.dataList.length > 0) {
+            // 构建完整的URL列表
+            const coverUrls = result.dataList.map((cover: any) => 
+                `${FILE_DOWNLOAD_URL}${cover.coverImage}`
+            );
+            
+            // 存入缓存
+            tagCoverCache.set(tagID, coverUrls);
+            
+            // 随机选择一个
+            const randomIndex = Math.floor(Math.random() * coverUrls.length);
+            return coverUrls[randomIndex];
+        }
+        
+        // 如果没有配置默认封面，返回通用默认封面
+        return defaultArticleImg;
+    } catch (error) {
+        console.error('获取标签默认封面失败:', error);
+        return defaultArticleImg;
+    }
+}
+
+/**
+ * 清除标签封面缓存
+ * @param tagID 可选，指定清除某个标签的缓存，不传则清除所有
+ */
+export function clearTagCoverCache(tagID?: string) {
+    if (tagID) {
+        tagCoverCache.delete(tagID);
+    } else {
+        tagCoverCache.clear();
+    }
+}
+
+/**
+ * 预加载标签默认封面到缓存
+ * @param tagIDs 标签ID列表
+ */
+export async function preloadTagCovers(tagIDs: string[]) {
+    const promises = tagIDs.map(tagID => getRandomDefaultCover(tagID));
+    await Promise.all(promises);
+}

schoolNewsWeb/src/views/admin/manage/content/TagManagementView.vue

@@ -161,6 +161,48 @@
               placeholder="请输入标签描述"
             />
           </el-form-item>
+
+          <el-form-item label="默认封面">
+            <div class="default-covers-section">
+              <div class="covers-tip">为该标签配置多张默认封面，资源没有封面时会随机显示其中一张</div>
+              
+              <!-- 已上传的封面列表 -->
+              <div class="covers-list" v-if="defaultCovers.length > 0">
+                <div v-for="(cover, index) in defaultCovers" :key="cover.id || index" class="cover-item">
+                  <img :src="cover.coverImage" alt="默认封面" class="cover-preview" />
+                  <div class="cover-actions">
+                    <el-switch 
+                      v-model="cover.isActive" 
+                      :active-value="1" 
+                      :inactive-value="0"
+                      active-text="启用" 
+                      inactive-text="禁用"
+                    />
+                    <el-button 
+                      type="danger" 
+                      size="small" 
+                      @click="removeCover(index)"
+                      :icon="Delete"
+                    >
+                      删除
+                    </el-button>
+                  </div>
+                </div>
+              </div>
+
+              <!-- 添加封面 -->
+              <FileUpload
+                list-type="cover"
+                :cover-url="''"
+                @update:cover-url="handleAddCover"
+                accept="image/*"
+                :max-size="5"
+                module="tag-cover"
+                :as-dialog="false"
+                tip="点击上传默认封面图片"
+              />
+            </div>
+          </el-form-item>
         </el-form>
 
         <template #footer>
@@ -175,10 +217,13 @@
 <script setup lang="ts">
 import { ref, onMounted, computed } from 'vue';
 import { ElMessage, ElMessageBox, type FormInstance, type FormRules } from 'element-plus';
+import { Delete } from '@element-plus/icons-vue';
 import { resourceTagApi } from '@/apis/resource';
 import type { Tag } from '@/types/resource';
 import { TagType } from '@/types/resource';
-import {AdminLayout} from '@/views/admin';
+import { AdminLayout } from '@/views/admin';
+import {FileUpload} from '@/components';
+import { FILE_DOWNLOAD_URL } from '@/config';
 
 defineOptions({
   name: 'TagManagementView'
@@ -198,6 +243,9 @@ const currentTag = ref<Partial<Tag>>({
   description: ''
 });
 
+// 默认封面列表
+const defaultCovers = ref<any[]>([]);
+
 // 按类型分类的标签
 const articleTags = computed(() => {
   return tags.value.filter(tag => tag.tagType === TagType.ARTICLE_CATEGORY);
@@ -256,16 +304,65 @@ function showCreateDialog() {
     color: '#409EFF',
     description: ''
   };
+  defaultCovers.value = [];
   dialogVisible.value = true;
 }
 
 // 编辑标签
-function editTag(row: Tag) {
+async function editTag(row: Tag) {
   isEdit.value = true;
   currentTag.value = { ...row };
+  
+  // 加载默认封面
+  await loadDefaultCovers(row.tagID!);
+  
   dialogVisible.value = true;
 }
 
+// 加载默认封面
+async function loadDefaultCovers(tagID: string) {
+  try {
+    const result = await resourceTagApi.getAllDefaultCovers(tagID);
+    console.log('加载默认封面结果:', result);
+    if (result.success && result.dataList) {
+      defaultCovers.value = result.dataList.map((cover: any) => ({
+        ...cover,
+        coverImage: FILE_DOWNLOAD_URL + cover.coverImage
+      }));
+      console.log('处理后的封面列表:', defaultCovers.value);
+    } else {
+      defaultCovers.value = [];
+    }
+  } catch (error) {
+    console.error('加载默认封面失败:', error);
+    defaultCovers.value = [];
+  }
+}
+
+// 添加封面
+function handleAddCover(fileIdOrUrl: string) {
+  if (fileIdOrUrl) {
+    // 如果是完整URL，提取fileId；否则直接使用
+    let fileId = fileIdOrUrl;
+    
+    // 如果包含FILE_DOWNLOAD_URL，说明是完整URL，需要提取fileId
+    if (fileIdOrUrl.includes(FILE_DOWNLOAD_URL)) {
+      fileId = fileIdOrUrl.replace(FILE_DOWNLOAD_URL, '');
+    }
+    
+    defaultCovers.value.push({
+      coverImage: FILE_DOWNLOAD_URL + fileId,
+      isActive: 1,
+      orderNum: defaultCovers.value.length
+    });
+  }
+}
+
+// 删除封面
+function removeCover(index: number) {
+  defaultCovers.value.splice(index, 1);
+}
+
 // 删除标签
 async function deleteTag(row: Tag) {
   try {
@@ -310,6 +407,17 @@ async function handleSubmit() {
     }
 
     if (result.success) {
+      // 保存默认封面
+      let tagID = currentTag.value.tagID;
+      if (!tagID && result.data) {
+        // 新建标签，从返回数据中获取tagID
+        tagID = typeof result.data === 'string' ? result.data : result.data.tagID;
+      }
+      
+      if (tagID) {
+        await saveDefaultCovers(tagID);
+      }
+      
       ElMessage.success(isEdit.value ? '更新成功' : '创建成功');
       dialogVisible.value = false;
       loadTags();
@@ -323,9 +431,36 @@ async function handleSubmit() {
   }
 }
 
+// 保存默认封面
+async function saveDefaultCovers(tagID: string) {
+  try {
+    // 编辑模式下，先删除旧的默认封面
+    if (isEdit.value) {
+      await resourceTagApi.deleteDefaultCoversByTagId(tagID);
+    }
+    
+    // 准备要保存的封面数据
+    const coversToSave = defaultCovers.value.map((cover, index) => ({
+      tagID: tagID,
+      coverImage: cover.coverImage.replace(FILE_DOWNLOAD_URL, ''),
+      isActive: cover.isActive,
+      orderNum: index
+    }));
+
+    // 批量添加新的默认封面
+    if (coversToSave.length > 0) {
+      await resourceTagApi.batchAddDefaultCovers(coversToSave);
+    }
+  } catch (error) {
+    console.error('保存默认封面失败:', error);
+    ElMessage.warning('默认封面保存失败');
+  }
+}
+
 // 对话框关闭处理
 function handleDialogClose() {
   formRef.value?.resetFields();
+  defaultCovers.value = [];
 }
 </script>
 
@@ -577,4 +712,48 @@ function handleDialogClose() {
     grid-template-columns: 1fr;
   }
 }
+
+.default-covers-section {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  width: 100%;
+}
+
+.covers-tip {
+  font-size: 12px;
+  color: #909399;
+  line-height: 1.5;
+}
+
+.covers-list {
+  display: grid;
+  grid-template-columns: repeat(2, 1fr);
+  gap: 12px;
+  margin-bottom: 12px;
+}
+
+.cover-item {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  padding: 8px;
+  border: 1px solid #e0e0e0;
+  border-radius: 8px;
+  background: #f9f9f9;
+}
+
+.cover-preview {
+  width: 100%;
+  height: 120px;
+  object-fit: cover;
+  border-radius: 4px;
+}
+
+.cover-actions {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 8px;
+}
 </style>

schoolNewsWeb/src/views/public/article/card/HotArticleCard.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="article-card" @click="handleClick">
     <div class="article-image">
-      <img :src="resource?.coverImage ? (FILE_DOWNLOAD_URL + resource.coverImage) : defaultArticleImg" :alt="resource.title" />
+      <img :src="coverUrl" :alt="resource?.title" />
       <div class="article-tag">精选文章</div>
     </div>
     <div class="article-content">
@@ -21,12 +21,13 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue';
+import { computed, ref, watch } from 'vue';
 import { useRouter } from 'vue-router';
 import { Document } from '@element-plus/icons-vue';
 import type { ResourceRecommendVO } from '@/types';
 import { FILE_DOWNLOAD_URL } from '@/config';
 import defaultArticleImg from '@/assets/imgs/article-default.png';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 const props = defineProps<{
   resource?: ResourceRecommendVO;
@@ -34,6 +35,28 @@ const props = defineProps<{
 
 const router = useRouter();
 
+// 封面URL（响应式）
+const coverUrl = ref<string>(defaultArticleImg);
+
+// 加载封面
+async function loadCover() {
+  if (props.resource?.coverImage) {
+    // 有封面直接使用
+    coverUrl.value = FILE_DOWNLOAD_URL + props.resource.coverImage;
+  } else if (props.resource?.tagID) {
+    // 没有封面，根据tagID获取默认封面
+    coverUrl.value = await getRandomDefaultCover(props.resource.tagID);
+  } else {
+    // 既没有封面也没有tagID，使用全局默认
+    coverUrl.value = defaultArticleImg;
+  }
+}
+
+// 监听resource变化
+watch(() => props.resource, () => {
+  loadCover();
+}, { immediate: true });
+
 // 格式化浏览量
 function formatViewCount(count: number): string {
   if (count < 1000) {

schoolNewsWeb/src/views/public/article/card/IdeologicalArticleCard.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="ideological-card" @click="handleClick">
     <div class="card-image">
-      <img :src="resource?.coverImage ? (FILE_DOWNLOAD_URL + resource.coverImage) : defaultArticleImg" :alt="resource.title" />
+      <img :src="coverUrl" :alt="resource?.title" />
     </div>
     <div class="date-box" v-if="publishDate">
       <div class="day">{{ publishDate.day }}</div>
@@ -17,11 +17,12 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue';
+import { computed, ref, watch } from 'vue';
 import { useRouter } from 'vue-router';
 import type { ResourceRecommendVO } from '@/types';
 import { FILE_DOWNLOAD_URL } from '@/config';
 import defaultArticleImg from '@/assets/imgs/article-default.png';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 const props = defineProps<{
   resource?: ResourceRecommendVO;
@@ -29,6 +30,25 @@ const props = defineProps<{
 
 const router = useRouter();
 
+// 封面URL（响应式）
+const coverUrl = ref<string>(defaultArticleImg);
+
+// 加载封面
+async function loadCover() {
+  if (props.resource?.coverImage) {
+    coverUrl.value = FILE_DOWNLOAD_URL + props.resource.coverImage;
+  } else if (props.resource?.tagID) {
+    coverUrl.value = await getRandomDefaultCover(props.resource.tagID);
+  } else {
+    coverUrl.value = defaultArticleImg;
+  }
+}
+
+// 监听resource变化
+watch(() => props.resource, () => {
+  loadCover();
+}, { immediate: true });
+
 // 格式化发布日期
 const publishDate = computed(() => {
   if (!props.resource?.publishTime) return null;

schoolNewsWeb/src/views/public/course/components/CourseAdd.vue

@@ -50,6 +50,24 @@
           </div>
         </el-form-item>
 
+        <el-form-item label="课程分类" prop="tagID">
+          <el-select
+            v-model="currentCourseItemVO.tagID"
+            placeholder="请选择课程分类"
+            :loading="tagsLoading"
+            :disabled="!editMode"
+            clearable
+            style="width: 100%"
+          >
+            <el-option
+              v-for="tag in tagList"
+              :key="tag.tagID || tag.id"
+              :label="tag.name"
+              :value="tag.tagID || ''"
+            />
+          </el-select>
+        </el-form-item>
+
         <el-form-item label="授课老师" prop="teacher">
           <div style="display: flex; gap: 8px; align-items: flex-start;">
             <el-select
@@ -396,12 +414,13 @@ import { Plus, ArrowLeft, Refresh } from '@element-plus/icons-vue';
 import { FileUpload } from '@/components/file';
 import { RichTextComponent } from '@/components/text';
 import { courseApi } from '@/apis/study';
-import { resourceApi } from '@/apis/resource';
+import { resourceApi, resourceTagApi } from '@/apis/resource';
 import { userApi } from '@/apis/system';
 import type { CourseItemVO } from '@/types/study';
-import type { Resource } from '@/types/resource';
+import type { Resource, Tag, TagType } from '@/types/resource';
 import type { SysFile, UserVO } from '@/types';
 import { FILE_DOWNLOAD_URL } from '@/config';
+import { TagType as TagTypeEnum } from '@/types/resource';
 defineOptions({
   name: 'CourseAdd'
 });
@@ -428,6 +447,10 @@ const editMode = ref(true);
 const teacherList = ref<UserVO[]>([]);
 const teachersLoading = ref(false);
 
+// 标签列表
+const tagList = ref<Tag[]>([]);
+const tagsLoading = ref(false);
+
 // 原始数据（用于比对）
 const originalCourseItemVO = ref<CourseItemVO>();
 // 当前编辑的数据
@@ -445,12 +468,15 @@ const currentCourseItemVO = ref<CourseItemVO>({
 // 表单验证规则
 const rules = {
   'name': [{ required: true, message: '请输入课程名称', trigger: 'blur' }],
+  'tagID': [{ required: true, message: '请选择课程分类', trigger: 'change' }],
   'teacher': [{ required: true, message: '请输入授课老师', trigger: 'blur' }]
 };
 
 onMounted(() => {
   // 加载教师列表
   loadTeacherList();
+  // 加载标签列表
+  loadTagList();
   
   if (props.courseID) {
     loadCourse();
@@ -641,6 +667,25 @@ async function loadTeacherList() {
   }
 }
 
+// 加载标签列表
+async function loadTagList() {
+  try {
+    tagsLoading.value = true;
+    const result = await resourceTagApi.getTagsByType(TagTypeEnum.COURSE_CATEGORY);
+    if (result.success) {
+      tagList.value = result.dataList || [];
+      console.log(`✅ 已加载 ${tagList.value.length} 个课程分类标签`);
+    } else {
+      ElMessage.error(result.message || '加载课程分类失败');
+    }
+  } catch (error) {
+    console.error('加载课程分类失败:', error);
+    ElMessage.error('加载课程分类失败');
+  } finally {
+    tagsLoading.value = false;
+  }
+}
+
 // 处理教师选择框获得焦点
 function handleTeacherSelectFocus() {
   // 如果还没有加载教师列表，则加载

schoolNewsWeb/src/views/user/resource-center/SearchView.vue

@@ -92,7 +92,7 @@
             <!-- 文章封面 -->
             <div class="article-cover">
               <img
-                :src="article.coverImage ? (FILE_DOWNLOAD_URL + article.coverImage) : defaultArticleImg"
+                :src="getCoverUrl(article)"
                 :alt="article.resourceName"
               />
               <div class="cover-overlay">
@@ -155,7 +155,7 @@
             <!-- 课程封面 -->
             <div class="course-cover">
               <img
-                :src="course.coverImage ? (FILE_DOWNLOAD_URL + course.coverImage) : defaultCourseImg"
+                :src="getCoverUrl(course)"
                 :alt="course.courseName"
               />
               <div class="cover-overlay">
@@ -226,12 +226,13 @@ import { resourceApi } from '@/apis/resource';
 import { FILE_DOWNLOAD_URL } from '@/config';
 import type { TaskItemVO } from '@/types/study';
 import defaultArticleImg from '@/assets/imgs/article-default.png';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 const router = useRouter();
 const route = useRoute();
 
-// 默认封面（文章和课程使用同一个）
+// 封面URL映射（resourceID -> coverUrl）
-const defaultCourseImg = defaultArticleImg;
+const coverUrls = ref<Map<string, string>>(new Map());
 
 // 响应式数据
 const loading = ref(false);
@@ -275,6 +276,9 @@ async function loadSearchResults() {
     if (result.success && result.dataList) {
       searchResults.value = result.dataList;
       total.value = result.dataList.length;
+      
+      // 加载封面
+      await loadCovers(result.dataList);
     } else {
       searchResults.value = [];
       total.value = 0;
@@ -289,6 +293,40 @@ async function loadSearchResults() {
   }
 }
 
+/**
+ * 加载资源封面
+ */
+async function loadCovers(items: TaskItemVO[]) {
+  const newCoverUrls = new Map<string, string>();
+  
+  for (const item of items) {
+    const itemId = item.resourceID || item.courseID || '';
+    if (!itemId) continue;
+    
+    if (item.coverImage) {
+      // 有封面直接使用
+      newCoverUrls.set(itemId, FILE_DOWNLOAD_URL + item.coverImage);
+    } else if (item.tagID) {
+      // 没有封面，根据tagID获取默认封面
+      const cover = await getRandomDefaultCover(item.tagID);
+      newCoverUrls.set(itemId, cover);
+    } else {
+      // 使用全局默认
+      newCoverUrls.set(itemId, defaultArticleImg);
+    }
+  }
+  
+  coverUrls.value = newCoverUrls;
+}
+
+/**
+ * 获取资源封面URL
+ */
+function getCoverUrl(item: TaskItemVO): string {
+  const itemId = item.resourceID || item.courseID || '';
+  return coverUrls.value.get(itemId) || defaultArticleImg;
+}
+
 /**
  * 执行搜索
  */

schoolNewsWeb/src/views/user/resource-center/components/ResourceList.vue

@@ -9,7 +9,7 @@
       >
         <div class="resource-cover">
           <img 
-            :src="resource.coverImage ? (FILE_DOWNLOAD_URL + resource.coverImage) : staticAssets.defaultArticleImg"
+            :src="getCoverUrl(resource)"
             alt="cover"
           />
         </div>
@@ -55,6 +55,7 @@ import type { Resource } from '@/types/resource';
 import type { PageParam } from '@/types';
 import defaultArticleImgUrl from '@/assets/imgs/article-default.png';
 import { useDevice } from '@/utils/deviceUtils';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 // 创建响应式数据对象，包含静态资源
 const staticAssets = reactive({
@@ -82,6 +83,7 @@ const listContainerRef = ref<HTMLElement>();
 const hasMoreData = ref(true);
 const isLoadingMore = ref(false);
 const hasTriggeredLoadMore = ref(false); // 标记是否触发过加载更多
+const coverUrls = ref<Map<string, string>>(new Map()); // 存储资源封面URL
 
 // 设备检测
 const { isMobileDevice } = useDevice();
@@ -171,6 +173,9 @@ async function loadResources(isAppend = false) {
       const totalPages = Math.ceil(total.value / pageSize.value);
       hasMoreData.value = currentPage.value < totalPages;
       
+      // 加载封面
+      await loadCovers(newData);
+      
       // 通知父组件列表已更新
       emit('list-updated', resources.value);
     }
@@ -254,6 +259,35 @@ async function loadMoreData() {
   await loadResources(true); // true 表示追加模式
 }
 
+/**
+ * 加载资源封面
+ */
+async function loadCovers(items: Resource[]) {
+  for (const item of items) {
+    const itemId = item.resourceID || '';
+    if (!itemId) continue;
+    
+    if (item.coverImage) {
+      // 有封面直接使用
+      coverUrls.value.set(itemId, FILE_DOWNLOAD_URL + item.coverImage);
+    } else if (item.tagID) {
+      // 没有封面，根据tagID获取默认封面
+      const cover = await getRandomDefaultCover(item.tagID);
+      coverUrls.value.set(itemId, cover);
+    } else {
+      // 使用全局默认
+      coverUrls.value.set(itemId, defaultArticleImgUrl);
+    }
+  }
+}
+
+/**
+ * 获取资源封面URL
+ */
+function getCoverUrl(resource: Resource): string {
+  return coverUrls.value.get(resource.resourceID || '') || defaultArticleImgUrl;
+}
+
 defineExpose({
   loadResources,
   getResources,

schoolNewsWeb/src/views/user/study-plan/CourseCenterView.vue

@@ -44,7 +44,7 @@
             <!-- 课程封面 -->
             <div class="course-cover">
               <img
-                :src="course.coverImage ? FILE_DOWNLOAD_URL + course.coverImage : defaultCover"
+                :src="getCoverUrl(course)"
                 :alt="course.name"
                 class="cover-image"
               />
@@ -111,6 +111,7 @@ import type { Course, PageParam } from '@/types';
 import { StudyPlanLayout } from '@/views/user/study-plan';
 import defaultCoverImg from '@/assets/imgs/default-course-bg.png'
 import { FILE_DOWNLOAD_URL } from '@/config';
+import { getRandomDefaultCover } from '@/utils/defaultCover';
 
 defineOptions({
   name: 'CourseCenterView'
@@ -124,6 +125,7 @@ const courseList = ref<Course[]>([]);
 const total = ref(0);
 const isMobile = ref(false);
 const hasMore = ref(true);
+const coverUrls = ref<Map<string, string>>(new Map()); // 存储课程封面URL
 
 // 默认封面图片
 const defaultCover = defaultCoverImg;
@@ -200,6 +202,9 @@ async function loadMoreCourses() {
       pageParam.value.pageNumber = nextPage;
       total.value = res.pageParam?.totalElements || 0;
       
+      // 加载封面
+      await loadCovers(res.dataList);
+      
       // 检查是否还有更多数据
       hasMore.value = courseList.value.length < total.value;
     } else {
@@ -236,6 +241,9 @@ async function loadCourseList(isRefresh = false) {
       courseList.value = res.dataList || [];
       total.value = res.pageParam?.totalElements || 0;
       
+      // 加载封面
+      await loadCovers(res.dataList || []);
+      
       // 移动端下检查是否还有更多数据
       if (isMobile.value) {
         hasMore.value = courseList.value.length < total.value;
@@ -292,6 +300,35 @@ function getCategoryName(): string {
   // TODO: 从 courseTags 中获取第一个标签作为分类
   return '党史学习';
 }
+
+/**
+ * 加载课程封面
+ */
+async function loadCovers(courses: Course[]) {
+  for (const course of courses) {
+    const courseId = course.courseID || '';
+    if (!courseId) continue;
+    
+    if (course.coverImage) {
+      // 有封面直接使用
+      coverUrls.value.set(courseId, FILE_DOWNLOAD_URL + course.coverImage);
+    } else if (course.tagID) {
+      // 没有封面，根据tagID获取默认封面
+      const cover = await getRandomDefaultCover(course.tagID);
+      coverUrls.value.set(courseId, cover);
+    } else {
+      // 使用全局默认
+      coverUrls.value.set(courseId, defaultCover);
+    }
+  }
+}
+
+/**
+ * 获取课程封面URL
+ */
+function getCoverUrl(course: Course): string {
+  return coverUrls.value.get(course.courseID || '') || defaultCover;
+}
 </script>
 
 <style lang="scss" scoped>