Fix: return null if category or tag has no post

lyujp · Jul 19, 2024 · 223600b · 223600b
1 parent 2ffd8af
commit 223600b
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/main/java/cn/luijp/escserver/service/controller/impl/PostsControllerServiceImpl.java b/src/main/java/cn/luijp/escserver/service/controller/impl/PostsControllerServiceImpl.java
@@ -109,12 +109,18 @@ private PostsListDto packagePost(Integer pageNum, Integer pageSize, Integer type
             LambdaQueryWrapper<PostTags> postTagsLambdaQueryWrapper = new LambdaQueryWrapper<>();
             postTagsLambdaQueryWrapper.eq(PostTags::getTagId,id);
             List<Long> postTagsList = postTagsService.list(postTagsLambdaQueryWrapper).stream().map(PostTags::getPostId).toList();
+            if(postTagsList.isEmpty()){
+                return null;
+            }
             postsQueryWrapper.eq(Posts::getType, 1).eq(Posts::getVisible, true)
                     .in(Posts::getId, postTagsList);
         }else if(filter == 3){
             LambdaQueryWrapper<PostCategories> postCategoriesLambdaQueryWrapper = new LambdaQueryWrapper<>();
             postCategoriesLambdaQueryWrapper.eq(PostCategories::getCategoryId,id);
             List<Long> postCategoriesList = postCategoriesService.list(postCategoriesLambdaQueryWrapper).stream().map(PostCategories::getPostId).collect(Collectors.toList());
+            if(postCategoriesList.isEmpty()){
+                return null;
+            }
             postsQueryWrapper.eq(Posts::getType, 1).eq(Posts::getVisible, true)
                     .in(Posts::getId, postCategoriesList);
         }