add

qiaoba-modules/qiaoba-module-system/src/main/resources/mapper/SysUserPostMapper.xml

@@ -0,0 +1,10 @@
+<?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.qiaoba.module.system.mapper.SysUserPostMapper">
+
+    <select id="selectPostIdsByUserId" resultType="string">
+        select post_id from sys_user_post where user_id = #{userId}
+    </select>
+</mapper>