优化动态列表

release-service/src/main/java/com/mmc/csf/release/dao/LikeDAO.java

 package com.mmc.csf.release.dao;
 
 
+import com.mmc.csf.release.entity.ForumDynamicDO;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 
+import java.util.List;
+
 /**
  * @Author LW
  * @date 2023/5/15 10:29
@@ -46,4 +49,5 @@ public interface LikeDAO {
      */
     int getLikesCount(int dynamicId);
 
+   List<ForumDynamicDO> selectLiked(Integer userId, List<Integer> ids);
 }

release-service/src/main/java/com/mmc/csf/release/service/impl/DynamicServiceImpl.java

@@ -144,6 +144,7 @@ public class DynamicServiceImpl implements DynamicService {
         Map<Integer, List<ForumImageDO>> ImageMap = forumImageList.stream().collect(Collectors.groupingBy(ForumImageDO::getDynamicId));
         // 获取视频信息
         List<ForumVideoDO> forumVideoList = dynamicDAO.listDynamicVideo(ids);
+        // 获取用户信息
         Set<Integer> userIds = forumDynamicList.stream().map(ForumDynamicDO::getUserId).collect(Collectors.toSet());
         List<Integer> userIdList = new ArrayList<>(userIds);
         BUserAccountQO bUserAccountQO = new BUserAccountQO();
@@ -151,6 +152,8 @@ public class DynamicServiceImpl implements DynamicService {
         // 解决bug
         List<UserAccountSimpleDTO> userAccountSimpleDTOS = userAppApi.feignListBAccountPage(bUserAccountQO);
         Map<Integer, UserAccountSimpleDTO> userAccountInfoMap = userAccountSimpleDTOS.stream().collect(Collectors.toMap(UserAccountSimpleDTO::getId, Function.identity()));
+        //获取liked信息
+        List<ForumDynamicDO> forumDynamicDOS = likeDAO.selectLiked(userId, ids);
         List<DynamicVO> dynamicVOList = forumDynamicList.stream()
                 .map(d -> {
                     MediaVO mediaVO = new MediaVO();
@@ -174,8 +177,14 @@ public class DynamicServiceImpl implements DynamicService {
                     }
                     dynamicVO.setMediaVO(mediaVO);
                     // 设置是否点赞
-                    boolean liked = likeDAO.isLiked(userId, d.getId());
-                    dynamicVO.setLikes(liked);
+                    for (ForumDynamicDO forumDynamicDO : forumDynamicDOS) {
+                        if (forumDynamicDO.getId().equals(d.getId())){
+                            dynamicVO.setLikes(true);
+                            break;
+                        }else {
+                            dynamicVO.setLikes(false);
+                        }
+                    }
                     return dynamicVO;
                 }).collect(Collectors.toList());
         return PageResult.buildPage(pageNo, pageSize, count, dynamicVOList);

release-service/src/main/resources/mapper/forum/LikeMapper.xml

@@ -25,4 +25,31 @@
         FROM forum_like
         WHERE dynamic_id = #{dynamicId}
     </select>
+    <select id="isLikedBatch" resultType="java.lang.Boolean">
+        SELECT
+        *
+        FROM (
+        SELECT
+        d.id AS dynamic_id,
+        EXISTS (SELECT 1 FROM forum_like WHERE user_id = #{userId} AND dynamic_id = d.id) AS liked
+        FROM forum_dynamic d
+        WHERE d.id IN (
+        <foreach collection="ids" item="id" separator=",">
+            #{id}
+        </foreach>
+        )
+        ) t
+    </select>
+
+    <select id="selectLiked" resultType="com.mmc.csf.release.entity.ForumDynamicDO">
+        SELECT fd.id
+        FROM forum_dynamic fd
+        INNER JOIN forum_like fl ON fd.id = fl.dynamic_id
+        where fl.user_id = #{userId}
+        and fd.id in (
+        <foreach collection="ids" item="id" separator=",">
+            #{id}
+        </foreach>
+        )
+    </select>
 </mapper>
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