关注未关注优化

src/main/java/com/dd/admin/business/api/AuthApi.java

@@ -210,11 +210,11 @@ public class AuthApi {
     @GetMapping("/api/auth/getFollowMes")
     @OperLog(operModule = "获取关注目标作者的所有粉丝",operType = OperType.QUERY,operDesc = "获取关注目标作者的所有粉丝")
     public ResultBean getFollowMes(String authorId) {
+        String myId = String.valueOf(request.getAttribute("authorId"));
+
         //关注我的列表
-        List<FollowVo> followMes = followService.selectFollowMeList(authorId);
+        List<FollowVo> followMes = followService.selectFollowMeList(authorId,myId);
-        followMes.stream().forEach(followVo -> {
+
-            followVo.setIsFollowMe(Boolean.TRUE);
-        });
         return ResultBean.success(followMes);
     }
 
@@ -223,12 +223,28 @@ public class AuthApi {
     @GetMapping("/api/auth/getMyFollows")
     @OperLog(operModule = "getMyFollows",operType = OperType.QUERY,operDesc = "获取关注目标作者的所有粉丝")
     public ResultBean getMyFollows(String authorId) {
+        String myId = String.valueOf(request.getAttribute("authorId"));
+
         //关注我的列表
-        List<FollowVo> myFollows = followService.selectMyFollowList(authorId);
+        List<FollowVo> myFollows = followService.selectMyFollowList(authorId,myId);
         return ResultBean.success(myFollows);
     }
 
 
+    @ApiOperation(value = "获取关注目标互相关注的人")
+    @ApiOperationSupport(order = 1)
+    @GetMapping("/api/auth/getMyFriends")
+    @OperLog(operModule = "getMyFriends",operType = OperType.QUERY,operDesc = "获取关注目标互相关注的人")
+    public ResultBean getMyFriends(String authorId) {
+        //关注我的列表
+        List<FollowVo> myFollows = followService.getMyFriends(authorId);
+        myFollows.stream().forEach(followVo -> {
+            followVo.setIsFollow(Boolean.TRUE);
+            followVo.setIsFollowMe(Boolean.TRUE);
+        });
+        return ResultBean.success(myFollows);
+    }
+
 
     @ApiOperation(value = "获取作者信息")
     @ApiOperationSupport(order = 1)

src/main/java/com/dd/admin/business/follow/mapper/FollowMapper.java

@@ -26,8 +26,10 @@ public interface FollowMapper extends BaseMapper<Follow> {
 
     List<FollowVo> selectFollowList(@Param("followDto") FollowDto followDto);
 
-    List<FollowVo> selectMyFollowList(@Param("authorId") String authorId);
+    //查询用户为authorId的粉丝列表 再传入一个数值 看和当前数值的关联关系 例如我看对方明天 想知道对方和我的关系
-    List<FollowVo> selectFollowMeList(@Param("authorId") String authorId);
+    List<FollowVo> selectMyFollowList(@Param("authorId") String authorId,@Param("targetId") String targetId);
+    List<FollowVo> selectFollowMeList(@Param("authorId") String authorId,@Param("targetId") String targetId);
+    List<FollowVo> getMyFriends(@Param("authorId")String authorId);
 
 
 }

src/main/java/com/dd/admin/business/follow/mapper/xml/FollowMapper.xml

@@ -51,8 +51,18 @@
                     business_follow
                 WHERE
                     follow_id = b.AUTHOR_ID
-                AND author_id = #{authorId}
+                AND author_id = #{targetId}
             ) AS isFollowMe
+            ,
+            (
+                SELECT
+                    count(1)
+                FROM
+                    business_follow
+                WHERE
+                    follow_id = #{targetId}
+                AND author_id = b.AUTHOR_ID
+            ) AS isFollow
         FROM
             business_follow a
         LEFT JOIN business_author b ON a.author_id = b.author_id
@@ -77,9 +87,19 @@
                 FROM
                     business_follow
                 WHERE
-                    follow_id = #{authorId}
+                    follow_id = #{targetId}
                 AND author_id = b.AUTHOR_ID
             ) AS isFollow
+            ,
+            (
+                SELECT
+                    count(1)
+                FROM
+                    business_follow
+                WHERE
+                    follow_id = b.AUTHOR_ID
+                AND author_id = #{targetId}
+            ) AS isFollowMe
         FROM
             business_follow a
         LEFT JOIN business_author b ON a.follow_id = b.author_id
@@ -89,5 +109,23 @@
         ORDER BY
             a.create_time DESC
     </select>
+    <select id="getMyFriends" resultType="com.dd.admin.business.follow.domain.FollowVo"
+            parameterType="java.lang.String">
+        SELECT
+        b.AUTHOR_ID,
+        b.AUTHOR_NAME,
+        b.AVATAR_URL,
+        b.DESCRIPTION
+    FROM
+        business_author b
+           LEFT JOIN
+        -- 通过business_follow表自连接，找出既存在A关注B，又存在B关注A的情况
+        business_follow f1 ON b.AUTHOR_ID = f1.author_id
+           LEFT JOIN
+        business_follow f2 ON b.AUTHOR_ID = f2.follow_id
+            WHERE f1.follow_id = #{authorId}
+            AND f2.author_id = #{authorId}
+            order by f1.create_time desc
+    </select>
 
 </mapper>

src/main/java/com/dd/admin/business/follow/service/FollowService.java

@@ -30,8 +30,9 @@ public interface FollowService extends IService<Follow> {
      Follow selectOneByFollowId(String authorId,String followId);
 
 
-    List<FollowVo> selectMyFollowList( String authorId);
+    List<FollowVo> selectMyFollowList( String authorId,String targetId);
-    List<FollowVo> selectFollowMeList(String authorId);
+    List<FollowVo> selectFollowMeList(String authorId,String targetId);
+    List<FollowVo> getMyFriends(String authorId);
 
 
 }

src/main/java/com/dd/admin/business/follow/service/impl/FollowServiceImpl.java

@@ -52,13 +52,18 @@ public class FollowServiceImpl extends ServiceImpl<FollowMapper, Follow> impleme
     }
 
     @Override
-    public List<FollowVo> selectMyFollowList(String authorId) {
+    public List<FollowVo> selectMyFollowList(String authorId,String targetId) {
-        return baseMapper.selectMyFollowList(authorId);
+        return baseMapper.selectMyFollowList(authorId,targetId);
     }
 
     @Override
-    public List<FollowVo> selectFollowMeList(String authorId) {
+    public List<FollowVo> selectFollowMeList(String authorId,String targetId) {
-        return baseMapper.selectFollowMeList(authorId);
+        return baseMapper.selectFollowMeList(authorId,targetId);
+    }
+
+    @Override
+    public List<FollowVo> getMyFriends(String authorId) {
+        return baseMapper.getMyFriends(authorId);
     }
 
 }