feat(playlist): 增加歌单收藏状态检查功能

- 新增 isPlaylistCollected 接口和相关实现
- 修改 toggleCollectPlaylist 函数，增加当前收藏状态参数
- 在前端 PlaylistDetail 组件中添加收藏状态检查逻辑
- 后端增加对应的控制层、服务层和实现类方法

music-houduan/src/main/java/com/test/musichouduan/controller/PlaylistController.java

@@ -189,6 +189,19 @@ public class PlaylistController {
         return Result.success("取消收藏成功", result);
     }
 
+    /**
+     * 检查当前用户是否收藏了该歌单
+     *
+     * @param id 歌单ID
+     * @return 响应结果
+     */
+    @SaCheckLogin
+    @GetMapping("/{id}/is-collected")
+    public Result<Boolean> isCollected(@PathVariable Long id) {
+        boolean result = playlistService.isCollected(id);
+        return Result.success(result);
+    }
+
     /**
      * 获取用户收藏的歌单列表
      *

music-houduan/src/main/java/com/test/musichouduan/controller/SingerController.java

@@ -175,6 +175,19 @@ public class SingerController {
         return Result.success("取消收藏成功", result);
     }
 
+    /**
+     * 检查当前用户是否收藏了该歌手
+     *
+     * @param id 歌手ID
+     * @return 响应结果
+     */
+    @SaCheckLogin
+    @GetMapping("/{id}/is-collected")
+    public Result<Boolean> isCollected(@PathVariable Long id) {
+        boolean result = singerService.isCollected(id);
+        return Result.success(result);
+    }
+
     /**
      * 获取用户收藏的歌手列表
      *

music-houduan/src/main/java/com/test/musichouduan/service/PlaylistService.java

@@ -99,6 +99,14 @@ public interface PlaylistService {
      */
     boolean uncollectPlaylist(Long id);
 
+    /**
+     * 检查当前用户是否收藏了该歌单
+     *
+     * @param id 歌单ID
+     * @return 是否收藏
+     */
+    boolean isCollected(Long id);
+
     /**
      * 获取用户收藏的歌单列表
      *

music-houduan/src/main/java/com/test/musichouduan/service/SingerService.java

@@ -90,6 +90,14 @@ public interface SingerService {
      */
     boolean uncollectSinger(Long id);
 
+    /**
+     * 检查当前用户是否收藏了该歌手
+     *
+     * @param id 歌手ID
+     * @return 是否收藏
+     */
+    boolean isCollected(Long id);
+
     /**
      * 获取用户收藏的歌手列表
      *

music-houduan/src/main/java/com/test/musichouduan/service/impl/PlaylistServiceImpl.java

@@ -247,6 +247,7 @@ public class PlaylistServiceImpl implements PlaylistService {
         playlist.setCover(coverUrl);
         playlist.setCreator(user);
         playlist.setPlayCount(0L);
+        playlist.setCollectCount(0);
         playlist.setIsOfficial(0); // 默认为非官方歌单
 
         // 设置歌单类型
@@ -358,7 +359,7 @@ public class PlaylistServiceImpl implements PlaylistService {
         userPlaylistRepository.collectPlaylist(user.getId(), playlist.getId());
 
         // 更新收藏数
-        playlist.setCollectCount(playlist.getCollectCount() + 1);
+        playlist.setCollectCount((playlist.getCollectCount() == null ? 0 : playlist.getCollectCount()) + 1);
         playlistRepository.save(playlist);
 
         return true;
@@ -385,12 +386,21 @@ public class PlaylistServiceImpl implements PlaylistService {
         userPlaylistRepository.uncollectPlaylist(user.getId(), playlist.getId());
 
         // 更新收藏数
-        playlist.setCollectCount(playlist.getCollectCount() - 1);
+        playlist.setCollectCount((playlist.getCollectCount() == null ? 0 : playlist.getCollectCount()) - 1);
         playlistRepository.save(playlist);
 
         return true;
     }
 
+    @Override
+    public boolean isCollected(Long id) {
+        if (!StpUtil.isLogin()) {
+            return false;
+        }
+        Long userId = StpUtil.getLoginIdAsLong();
+        return userPlaylistRepository.existsByUserIdAndPlaylistId(userId, id);
+    }
+
     @Override
     public PageResult<PlaylistDTO> getCollectedPlaylist(Integer page, Integer size) {
         // 获取当前登录用户

music-houduan/src/main/java/com/test/musichouduan/service/impl/SingerServiceImpl.java

@@ -214,6 +214,7 @@ public class SingerServiceImpl implements SingerService {
         singer.setName(singerDTO.getName());
         singer.setAvatar(avatarUrl);
         singer.setIntroduction(singerDTO.getIntroduction());
+        singer.setCollectCount(0);
 
         // 设置歌手类型
         if (singerDTO.getType() != null && singerDTO.getType().getId() != null) {
@@ -309,7 +310,7 @@ public class SingerServiceImpl implements SingerService {
         userSingerRepository.collectSinger(user.getId(), singer.getId());
 
         // 更新收藏数
-        singer.setCollectCount(singer.getCollectCount() + 1);
+        singer.setCollectCount((singer.getCollectCount() == null ? 0 : singer.getCollectCount()) + 1);
         singerRepository.save(singer);
 
         return true;
@@ -336,12 +337,21 @@ public class SingerServiceImpl implements SingerService {
         userSingerRepository.uncollectSinger(user.getId(), singer.getId());
 
         // 更新收藏数
-        singer.setCollectCount(singer.getCollectCount() - 1);
+        singer.setCollectCount((singer.getCollectCount() == null ? 0 : singer.getCollectCount()) - 1);
         singerRepository.save(singer);
 
         return true;
     }
 
+    @Override
+    public boolean isCollected(Long id) {
+        if (!StpUtil.isLogin()) {
+            return false;
+        }
+        Long userId = StpUtil.getLoginIdAsLong();
+        return userSingerRepository.existsByUserIdAndSingerId(userId, id);
+    }
+
     @Override
     public PageResult<SingerDTO> getCollectedSinger(Integer page, Integer size) {
         // 获取当前登录用户

music-qianduan/src/api/playlist.js

@@ -289,11 +289,25 @@ export function deletePlaylist(id) {
 /**
  * 收藏/取消收藏歌单
  * @param {number} id 歌单ID
+ * @param {boolean} isCollected 当前是否收藏
  * @returns {Promise<any>}
  */
-export function toggleCollectPlaylist(id) {
+export function toggleCollectPlaylist(id, isCollected) {
+  if (isCollected) {
+    return api.delete(`/playlist/${id}/collect`)
+  } else {
     return api.post(`/playlist/${id}/collect`)
   }
+}
+
+/**
+ * 检查当前用户是否收藏了该歌单
+ * @param {number} id 歌单ID
+ * @returns {Promise<any>}
+ */
+export function isPlaylistCollected(id) {
+  return api.get(`/playlist/${id}/is-collected`)
+}
 
 /**
  * 向歌单添加音乐

music-qianduan/src/api/singer.js

@@ -203,24 +203,24 @@ export function getHotSinger(limit = 10) {
 /**
  * 收藏/取消收藏歌手
  * @param {number} id 歌手ID
+ * @param {boolean} isCollected 当前是否收藏
  * @returns {Promise<any>}
  */
-export function toggleCollectSinger(id) {
+export function toggleCollectSinger(id, isCollected) {
-  // 检查是否已收藏
-  return api.get(`/singer/${id}`).then(res => {
-    if (res.code === 200) {
-      const isCollected = res.data.isCollected === true
-
-      // 根据当前收藏状态决定调用收藏或取消收藏接口
   if (isCollected) {
     return api.delete(`/singer/${id}/collect`)
   } else {
     return api.post(`/singer/${id}/collect`)
   }
-    } else {
-      return Promise.reject(new Error(res.message || '获取歌手信息失败'))
 }
-  })
+
+/**
+ * 检查当前用户是否收藏了该歌手
+ * @param {number} id 歌手ID
+ * @returns {Promise<any>}
+ */
+export function isSingerCollected(id) {
+  return api.get(`/singer/${id}/is-collected`)
 }
 
 /**

music-qianduan/src/views/PlaylistDetail.vue

@@ -4,7 +4,7 @@ import { useRoute, useRouter } from 'vue-router'
 import { usePlayerStore } from '../stores/player'
 import { useUserStore } from '../stores/user'
 import { ElMessage, ElMessageBox } from 'element-plus'
-import { getPlaylistById, toggleCollectPlaylist, deletePlaylist as apiDeletePlaylist } from '../api/playlist'
+import { getPlaylistById, toggleCollectPlaylist, deletePlaylist as apiDeletePlaylist, isPlaylistCollected } from '../api/playlist'
 import { getMusicStatus } from '../api/music'
 import { getCommentList, addComment, deleteComment as apiDeleteComment } from '../api/comment'
 import { connect, subscribe, unsubscribe, disconnect } from '../utils/websocket' // 导入 WebSocket 工具
@@ -67,8 +67,10 @@ const fetchPlaylistDetail = async () => {
       // 判断是否是创建者
       isCreator.value = playlist.value.creator?.id === userStore.user?.id
 
-      // 获取收藏状态
+      // 如果用户已登录，则检查是否收藏
-      isCollected.value = playlist.value.collected === true
+      if (userStore.isLoggedIn) {
+        checkIfCollected()
+      }
 
       // 更新歌单内歌曲的状态
       updateMusicStatuses(playlist.value.songs)
@@ -83,6 +85,18 @@ const fetchPlaylistDetail = async () => {
   }
 }
 
+// 检查是否收藏
+const checkIfCollected = async () => {
+  try {
+    const res = await isPlaylistCollected(playlistId.value)
+    if (res.code === 200) {
+      isCollected.value = res.data
+    }
+  } catch (error) {
+    console.error('检查收藏状态失败:', error)
+  }
+}
+
 // 获取评论列表
 const fetchComments = async () => {
   try {
@@ -139,7 +153,7 @@ const toggleCollect = async () => {
   }
 
   try {
-    const res = await toggleCollectPlaylist(playlistId.value)
+    const res = await toggleCollectPlaylist(playlistId.value, isCollected.value)
     if (res.code === 200) {
       isCollected.value = !isCollected.value
       // 更新收藏数

music-qianduan/src/views/SingerDetail.vue

@@ -4,7 +4,7 @@ import { useRoute, useRouter } from 'vue-router'
 import { usePlayerStore } from '../stores/player'
 import { useUserStore } from '../stores/user'
 import { ElMessage, ElMessageBox } from 'element-plus'
-import { getSingerById, toggleCollectSinger } from '../api/singer'
+import { getSingerById, isSingerCollected, collectSinger, uncollectSinger } from '../api/singer'
 import { getCommentList, addComment, deleteComment as apiDeleteComment } from '../api/comment'
 import { processImageUrl } from '../utils/imageUtils'
 import { processMusicUrl, getMusicBySinger, getMusicStatus } from '../api/music'
@@ -67,8 +67,10 @@ const fetchSingerDetail = async () => {
       // 获取歌手的音乐列表
       await fetchSingerMusic()
 
-      // 获取收藏状态
+      // 如果用户已登录，则检查是否收藏
-      isCollected.value = singer.value.collected === true
+      if (userStore.isLoggedIn) {
+        checkIfCollected()
+      }
     } else {
       ElMessage.error(res.message || '获取歌手详情失败')
     }
@@ -80,6 +82,18 @@ const fetchSingerDetail = async () => {
   }
 }
 
+// 检查是否收藏
+const checkIfCollected = async () => {
+  try {
+    const res = await isSingerCollected(singerId.value)
+    if (res.code === 200) {
+      isCollected.value = res.data
+    }
+  } catch (error) {
+    console.error('检查收藏状态失败:', error)
+  }
+}
+
 // 获取歌手的音乐列表
 const fetchSingerMusic = async () => {
   try {
@@ -181,7 +195,7 @@ const toggleCollect = async () => {
   }
 
   try {
-    const res = await toggleCollectSinger(singerId.value)
+    const res = await toggleCollectSinger(singerId.value, isCollected.value)
     if (res.code === 200) {
       isCollected.value = !isCollected.value
       // 更新收藏数