完成收藏模块

src/main/resources/com/bao/dating/mapper/PostFavoriteMapper.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.bao.dating.mapper.PostFavoriteMapper">
+    <!--添加动态收藏-->
+    <insert id="addPostFavorite">
+        insert into post_favorite values (null,#{userId},#{postId},#{createdAt})
+    </insert>
+    <!--删除动态收藏-->
+    <delete id="deletePostFavorite">
+        delete from post_favorite where post_id = #{postId}
+    </delete>
+    <!--查询当前已收藏所有用户-->
+    <select id="selectUserIDByPostID" resultType="java.lang.Long">
+        SELECT user_id FROM post_favorite WHERE post_id = #{postId}
+    </select>
+</mapper>