“我的”mapper

backend/src/main/java/com/nav/dao/MyDao.java

 package com.nav.dao;
 
+import com.nav.pojo.FollowList;
 import com.nav.pojo.User;
 import com.nav.vo.result.LifePostResult;
 import org.apache.ibatis.annotations.Param;
@@ -49,6 +50,24 @@ public interface MyDao {
     */
     public List<User> getFollowList(@Param("userId") long userId);
 
+    /**
+    * @Author: wlj
+    * @Description: 根据用户id和关注者id添加关注关系
+    * @DateTime: 2022/5/3 10:26
+    * @Params: [userId, followerId]
+    * @Return void
+    */
+    public void addFollower(FollowList followList);
+
+    /**
+    * @Author: wlj
+    * @Description: 根据用户id和关注者id取消关注关系
+    * @DateTime: 2022/5/3 10:27
+    * @Params: [userId, followerId]
+    * @Return void
+    */
+    public void deleteFollower(FollowList followList);
+
     /**
     * @Author: wlj
     * @Description: 根据用户id获取粉丝列表
@@ -57,4 +76,6 @@ public interface MyDao {
     * @Return java.util.List<com.nav.pojo.User>
     */
     public List<User> getFanList(@Param("userId") long userId);
+
+
 }

backend/src/main/java/com/nav/service/MyService.java

@@ -29,7 +29,7 @@ public interface MyService {
      * @Params: [userId]
      * @Return java.util.List<com.nav.vo.result.LifePostResult>
      */
-    public List<LifePostResult> getMyPosts(@Param("userId") long userId);
+    public List<LifePostResult> getMyPosts(@Param("userId") long userId,int currPage, int pageSize);
 
     /**
      * @Author: wlj
@@ -38,7 +38,7 @@ public interface MyService {
      * @Params: [userId]
      * @Return java.util.List<com.nav.vo.result.LifePostResult>
      */
-    public List<LifePostResult> getMyCollection(@Param("userId") long userId);
+    public List<LifePostResult> getMyCollection(@Param("userId") long userId,int currPage, int pageSize);
 
     /**
      * @Author: wlj

backend/src/main/java/com/nav/service/imp/MyServiceImpl.java

 package com.nav.service.imp;
 
 import com.nav.dao.MyDao;
+import com.nav.dao.PostDao;
+import com.nav.dao.UserDao;
 import com.nav.pojo.User;
 import com.nav.service.MyService;
 import com.nav.vo.result.LifePostResult;
@@ -17,20 +19,33 @@ import java.util.List;
 @Service
 public class MyServiceImpl implements MyService {
     private MyDao myDao;
-
+    private UserDao userDao;
+    private PostDao postDao;
     @Override
     public User getMyInfo(long userId) {
-        return myDao.getMyInfo(userId);
+        return userDao.selectUserByID(userId);
     }
 
     @Override
-    public List<LifePostResult> getMyPosts(long userId) {
-        return myDao.getMyPosts(userId);
+    public List<LifePostResult> getMyPosts(long userId,int currPage, int pageSize) {
+        //分页
+        List<LifePostResult> posts = postDao.selectLifePostById(userId);
+        //从第几条数据开始
+        int firstIndex = (currPage - 1) * pageSize;
+        //到第几条数据结束
+        int lastIndex = currPage * pageSize;
+        return posts.subList(firstIndex, lastIndex); //直接在list中截取
     }
 
     @Override
-    public List<LifePostResult> getMyCollection(long userId) {
-        return myDao.getMyCollection(userId);
+    public List<LifePostResult> getMyCollection(long userId,int currPage, int pageSize) {
+        //分页
+        List<LifePostResult> posts = myDao.getMyCollection(userId);
+        //从第几条数据开始
+        int firstIndex = (currPage - 1) * pageSize;
+        //到第几条数据结束
+        int lastIndex = currPage * pageSize;
+        return posts.subList(firstIndex, lastIndex); //直接在list中截取
     }
 
     @Override

backend/src/main/resources/mapper/MyMapper.xml

+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.nav.dao.MyDao">
+
+    <select id="getMyCollection" parameterType="long" resultType="com.nav.vo.result.LifePostResult">
+        select p.postTitle,p.postContent,p.postCover,p.nickname,p.gmtCreate,c.userId
+        from collectionList c
+                 left join post p
+                           on c.postId=p.id
+        where c.userId=#{userId}
+    </select>
+
+    <select id="getFollowList" parameterType="long" resultType="com.nav.pojo.User">
+        select * from user
+            INNER JOIN followList
+                on user.id=follwList.userId
+        where followList.userId=#{userId};
+    </select>
+
+    <select id="getFanList" parameterType="long" resultType="com.nav.pojo.User">
+        select * from user
+            INNER JOIN followList
+                on user.id=followList.followId
+        where followList.followId=#{userId};
+    </select>
+
+    <insert id="addFollower" parameterType="com.nav.pojo.FollowList">
+        insert into followList(userId,followId)
+        value(#{userId}, #{followId})
+    </insert>
+
+    <delete id="deleteFollower" parameterType="com.nav.pojo.FollowList">
+        delete from followList
+        where userId=#{userId} and followId=#{followId}
+    </delete>
+</mapper>
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