优化通过标签ID得到问答列表

src/main/java/cn/meteor/beyondclouds/modules/question/api/QuestionApi.java

@@ -256,7 +256,7 @@ public class QuestionApi {
     }
 
     @Anonymous
-    @ApiOperation("标签下的问答列表")
+    @ApiOperation("得到标签下的问答列表")
     @GetMapping("/tag/{tagId}/questions")
     public Response<PageVO<Question>> getQuestionsByTagId(@Valid PageForm pageForm, @PathVariable("tagId") String tagId) {
         try {

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

@@ -421,25 +421,31 @@ public class QuestionServiceImpl extends ServiceImpl<QuestionMapper, Question> i
 
     @Override
     public IPage<Question> getQuestionsByTagId(Integer pageNumber, Integer pageSize, String tagId) throws QuestionTagServiceException {
-        IPage<Question> page = new Page<>(pageNumber, pageSize);
-
         //1.检查标签是否存在
         Tag tag = tagService.getById(tagId);
         if (null == tag) {
             throw new QuestionTagServiceException(QuestionTagErrorCode.TAG_NOT_FOUND);
         }
 
+        IPage<Question> questionPage = new Page<>(pageNumber, pageSize);
+        IPage<QuestionTag> questionTagPage = new Page<>(pageNumber, pageSize);
+
         //2.通过标签ID得到对应的问题ID
-        List<String> questionIds = questionTagService.list(QuestionUtils.getWrapper("tag_id", tag.getTagId()))
-                                                     .stream().map(QuestionTag::getQuestionId).collect(Collectors.toList());
+        QueryWrapper<QuestionTag> questionTagQueryWrapper = new QueryWrapper<>();
+        questionTagQueryWrapper.eq("tag_id", tag.getTagId());
+
+        questionTagService.page(questionTagPage,questionTagQueryWrapper);
+
+        List<String> questionIds = questionTagPage.getRecords().stream().map(QuestionTag::getQuestionId).collect(Collectors.toList());
+
+        questionPage.setTotal(questionTagPage.getTotal());
+        questionPage.setCurrent(questionTagPage.getCurrent());
 
         if (!CollectionUtils.isEmpty(questionIds)) {
-            QueryWrapper<Question> questionQueryWrapper = new QueryWrapper<>();
-            questionQueryWrapper.in("q.question_id", questionIds)
-                                .orderByDesc("q.create_time");
-            return questionMapper.selectPageWithTags(page, questionQueryWrapper);
+            questionPage.setRecords(questionMapper.listByIdsWithTags(questionIds));
         }else {
-            return page;
+            questionPage.setRecords(List.of());
         }
+        return questionPage;
     }
 }