feat(comment): 实现评论删除的WebSocket实时同步功能

- 后端服务删除评论时通过WebSocket广播删除事件
- 前端音乐详情页接收删除消息并从列表中移除对应评论
- 前端歌单详情页支持删除事件处理并更新评论计数
- 前端歌手详情页实现删除事件处理和评论计数更新
- 支持父子评论层级结构的删除操作
- 统一WebSocket消息格式包含删除状态和评论ID信息

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

@@ -28,7 +28,9 @@ import org.springframework.transaction.annotation.Transactional;
 import jakarta.persistence.criteria.Predicate;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
@@ -221,6 +223,14 @@ public class CommentServiceImpl implements CommentService {
             }
         }
 
+        // 通过 WebSocket 广播删除事件
+        String destination = String.format("/topic/comments/%d/%d", comment.getTargetType(), comment.getTargetId());
+        Map<String, Object> deleteEvent = new HashMap<>();
+        deleteEvent.put("deleted", true);
+        deleteEvent.put("id", id);
+        deleteEvent.put("parentId", comment.getParentId());
+        messagingTemplate.convertAndSend(destination, deleteEvent);
+
         return true;
     }
 
@@ -343,6 +353,14 @@ public class CommentServiceImpl implements CommentService {
             }
         }
 
+        // 通过 WebSocket 广播删除事件
+        String destination = String.format("/topic/comments/%d/%d", comment.getTargetType(), comment.getTargetId());
+        Map<String, Object> deleteEvent = new HashMap<>();
+        deleteEvent.put("deleted", true);
+        deleteEvent.put("id", id);
+        deleteEvent.put("parentId", comment.getParentId());
+        messagingTemplate.convertAndSend(destination, deleteEvent);
+
         return true;
     }