fix

src/main/java/com/lk/paopao/service/PostService.java

@@ -276,7 +276,7 @@ public class PostService {
             collection.setUser(user);
             postCollectionRepository.save(collection);
             // 更新帖子的收藏计数
-            post.setUpvoteCount(post.getCollectionCount()+1);
+            post.setCollectionCount(post.getCollectionCount()+1);
             postRepository.save(post);
             return true;
         }