修复更新时删除话题喝和标签的问题，话题列表添加排序

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

@@ -354,10 +354,6 @@ public class BlogServiceImpl extends ServiceImpl<BlogMapper, Blog> implements IB
         }
 
         //4.判断是否引用话题
-        // 删除旧话题引用
-        QueryWrapper<TopicReference> topicReferenceQueryWrapper = new QueryWrapper<>();
-        topicReferenceQueryWrapper.eq("referencer_id", blog.getBlogId());
-        topicReferenceService.remove(topicReferenceQueryWrapper);
 
         // 添加新话题引用
         if (!CollectionUtils.isEmpty(topicIds)) {
@@ -365,6 +361,11 @@ public class BlogServiceImpl extends ServiceImpl<BlogMapper, Blog> implements IB
             List<Topic> topicList = topicService.listByIds(topicIds);
             List<String> existsTopicIds = topicList.stream().map(Topic::getTopicId).collect(Collectors.toList());
             if (!CollectionUtils.isEmpty(existsTopicIds)) {
+                // 删除旧话题引用
+                QueryWrapper<TopicReference> topicReferenceQueryWrapper = new QueryWrapper<>();
+                topicReferenceQueryWrapper.eq("referencer_id", blog.getBlogId());
+                topicReferenceService.remove(topicReferenceQueryWrapper);
+
                 List<TopicReference> topicReferenceList = new ArrayList<>();
                 for (String topicId : existsTopicIds) {
                     TopicReference topicReference = new TopicReference();
@@ -383,15 +384,17 @@ public class BlogServiceImpl extends ServiceImpl<BlogMapper, Blog> implements IB
         }
 
         //5.判断是否引用标签
-        // 删除旧标签
-        QueryWrapper<BlogTag> blogTagQueryWrapper = new QueryWrapper<>();
-        blogTagQueryWrapper.eq("blog_id", blog.getBlogId());
-        blogTagService.remove(blogTagQueryWrapper);
 
         // 添加新标签
         if (!CollectionUtils.isEmpty(tagIds)) {
             List<String> existsTagIds = tagService.listByIds(tagIds).stream().map(Tag::getTagId).collect(Collectors.toList());
             if (!CollectionUtils.isEmpty(existsTagIds)) {
+
+                // 删除旧标签
+                QueryWrapper<BlogTag> blogTagQueryWrapper = new QueryWrapper<>();
+                blogTagQueryWrapper.eq("blog_id", blog.getBlogId());
+                blogTagService.remove(blogTagQueryWrapper);
+
                 List<BlogTag> blogTagList = new ArrayList<>();
                 for (String tagId : existsTagIds) {
                     BlogTag blogTag = new BlogTag();

src/main/java/cn/meteor/beyondclouds/modules/question/service/impl/QuestionServiceImpl.java

@@ -232,16 +232,17 @@ public class QuestionServiceImpl extends ServiceImpl<QuestionMapper, Question> i
             questionExtService.update(questionExt,updateWrapper);
         }
 
-        // 删除旧话题引用
-        QueryWrapper<TopicReference> topicReferenceQueryWrapper = new QueryWrapper<>();
-        topicReferenceQueryWrapper.eq("referencer_id", question.getQuestionId());
-        topicReferenceService.remove(topicReferenceQueryWrapper);
-
         //5.判断是否引用话题
         if (!CollectionUtils.isEmpty(topicIds)) {
             // 获取要引用的话题，不正确的话题ID会被自动过滤
             List<String> existsTopicIds = topicService.listByIds(topicIds).stream().map(Topic::getTopicId).collect(Collectors.toList());
             if (!CollectionUtils.isEmpty(existsTopicIds)) {
+                // 删除旧话题引用
+                QueryWrapper<TopicReference> topicReferenceQueryWrapper = new QueryWrapper<>();
+                topicReferenceQueryWrapper.eq("referencer_id", question.getQuestionId());
+                topicReferenceService.remove(topicReferenceQueryWrapper);
+
+
                 List<TopicReference> topicReferenceList = new ArrayList<>();
                 for (String topicId : existsTopicIds) {
                     TopicReference topicReference = new TopicReference();
@@ -261,14 +262,14 @@ public class QuestionServiceImpl extends ServiceImpl<QuestionMapper, Question> i
 
 
         //5.判断是否引用标签
-        // 删除旧标签
-        QueryWrapper<QuestionTag> questionTagQueryWrapper = new QueryWrapper<>();
-        questionTagQueryWrapper.eq("question_id", question.getQuestionId());
-        questionTagService.remove(questionTagQueryWrapper);
-
         if (!CollectionUtils.isEmpty(tagIds)) {
             List<String> existsTagIds = tagService.listByIds(tagIds).stream().map(Tag::getTagId).collect(Collectors.toList());
             if (!CollectionUtils.isEmpty(existsTagIds)) {
+                // 删除旧标签
+                QueryWrapper<QuestionTag> questionTagQueryWrapper = new QueryWrapper<>();
+                questionTagQueryWrapper.eq("question_id", question.getQuestionId());
+                questionTagService.remove(questionTagQueryWrapper);
+
                 List<QuestionTag> questionTagList = new ArrayList<>();
                 for (String tagId : existsTagIds) {
                     QuestionTag questionTag = new QuestionTag();

src/main/java/cn/meteor/beyondclouds/modules/topic/api/TopicApi.java

@@ -12,7 +12,6 @@ import cn.meteor.beyondclouds.modules.topic.form.CreateTopicForm;
 import cn.meteor.beyondclouds.modules.topic.service.ITopicService;
 import cn.meteor.beyondclouds.modules.user.entity.User;
 import com.baomidou.mybatisplus.core.metadata.IPage;
-import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -57,8 +56,7 @@ public class TopicApi {
 
         int pageNo = pageForm.getPage();
         int pageSize = pageForm.getSize();
-        IPage<Topic> page = new Page<>(pageNo, pageSize);
-        IPage<Topic> topicPage = topicService.page(page);
+        IPage<Topic> topicPage = topicService.getTopicPage(pageNo, pageSize);
         PageVO<Topic> topicPageVO = new PageVO<>(topicPage);
         return Response.success(topicPageVO);
     }

src/main/java/cn/meteor/beyondclouds/modules/topic/service/ITopicService.java

@@ -65,7 +65,7 @@ public interface ITopicService extends IService<Topic> {
     IPage<User> getTopicsFollower(Integer page, Integer size, String topicId);
 
     /**
-     * 获取话题分页
+     * 获取用户的话题分页
      * @param page
      * @param size
      * @param userId
@@ -74,6 +74,14 @@ public interface ITopicService extends IService<Topic> {
     IPage<Topic> getTopicPage(Integer page, Integer size, String userId);
 
     /**
+     * 获取话题分页
+     * @param pageNumber
+     * @param pageSize
+     * @return
+     */
+    IPage<Topic> getTopicPage(Integer pageNumber, Integer pageSize);
+
+    /**
      * 增加话题引用次数
      * @param topicId
      * @param count

src/main/java/cn/meteor/beyondclouds/modules/topic/service/impl/TopicServiceImpl.java

@@ -191,6 +191,15 @@ public class TopicServiceImpl extends ServiceImpl<TopicMapper, Topic> implements
         IPage<Topic> page = new Page<>(pageNumber, pageSize);
         QueryWrapper<Topic> topicQueryWrapper = new QueryWrapper<>();
         topicQueryWrapper.eq("user_id", userId);
+        topicQueryWrapper.orderByDesc("create_time");
+        return page(page, topicQueryWrapper);
+    }
+
+    @Override
+    public IPage<Topic> getTopicPage(Integer pageNumber, Integer pageSize) {
+        IPage<Topic> page = new Page<>(pageNumber, pageSize);
+        QueryWrapper<Topic> topicQueryWrapper = new QueryWrapper<>();
+        topicQueryWrapper.orderByDesc("create_time");
         return page(page, topicQueryWrapper);
     }