2.11 删除博客时跟新引用次数

src/main/java/cn/meteor/beyondclouds/modules/blog/service/impl/BlogServiceImpl.java

@@ -203,8 +203,10 @@ public class BlogServiceImpl extends ServiceImpl<BlogMapper, Blog> implements IB
         QueryWrapper<BlogTag> queryWrapperTag = new QueryWrapper();
         queryWrapperTag.eq("blog_id", blogId);
         //引用标签数量减一
-        List<String> tags = blogTagService.list(queryWrapperTag).stream().map(BlogTag::getTagId).collect(Collectors.toList());
-        tagService.decreaseReferenceCountBatch(tags,1);
+        List<String> tagIds = blogTagService.list(queryWrapperTag).stream().map(BlogTag::getTagId).collect(Collectors.toList());
+        if (!CollectionUtils.isEmpty(tagIds)) {
+            tagService.decreaseReferenceCountBatch(tagIds,1);
+        }
         blogTagService.remove(queryWrapperTag);
 
         //5.删除博客引用的话题
@@ -212,7 +214,9 @@ public class BlogServiceImpl extends ServiceImpl<BlogMapper, Blog> implements IB
         queryWrapperTopic.eq("referencer_id", blogId);
         //引用话题数量减一
         List<String> topicIds = topicReferenceService.list(queryWrapperTopic).stream().map(TopicReference::getTopicId).collect(Collectors.toList());
-        topicService.decreaseReferenceCountBatch(topicIds, 1);
+        if (!CollectionUtils.isEmpty(topicIds)) {
+            topicService.decreaseReferenceCountBatch(topicIds, 1);
+        }
         topicReferenceService.remove(queryWrapperTopic);
 
         //6.删除博客表里的数据