Mybatis中的xml文件resultMap引用其他文件的re

被引用xml文件

<?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.demo.mymall.mbg.mapper.UmsRoleMapper">
  <resultMap id="tobeRef" type="com.demo.mymall.mbg.model.UmsRole">
    <id column="id" jdbcType="BIGINT" property="id" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="description" jdbcType="VARCHAR" property="description" />
    <result column="admin_count" jdbcType="INTEGER" property="adminCount" />
    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
    <result column="status" jdbcType="INTEGER" property="status" />
    <result column="sort" jdbcType="INTEGER" property="sort" />
  </resultMap>
  <!--省略其他sql -->
<mapper>

其中 和 resultMap id=“tobeRef”

在引用文件中我们需要指定被引用文件的namespace+resultMap

引用文件

<!--获得用户角色-->
    <select id="getRoleList" resultMap="com.demo.mymall.mbg.mapper.UmsRoleMapper.tobeRef">
        select r.*
        from ums_admin_role_relation ar left join ums_role r on ar.role_id = r.id
        where ar.admin_id = #{adminId}
    </select>

关键属性resultMap=“com.demo.mymall.mbg.mapper.UmsRoleMapper.tobeRef”

即被引用文件的namespace+resultMap
而不是被引用文件的路径
同理，<select>, <sql>定义的标签都可以被引用