TAreaMapper.xml

<?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="cn.wisenergy.chnmuseum.party.mapper.TAreaMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="cn.wisenergy.chnmuseum.party.model.TArea">
            <id column="id" property="id" />
                                                            <result column="name" property="name" />
                <result column="sname" property="sname" />
                <result column="code" property="code" />
                <result column="type" property="type" />
                <result column="parent_id" property="parentId" />
                <result column="sort_position" property="sortPosition" />
                <result column="longitude" property="longitude" />
                <result column="latitude" property="latitude" />
                <result column="full_name" property="fullName" />
                <result column="remarks" property="remarks" />
        </resultMap>

    <!-- 通用查询结果列 -->
    <sql id="Base_Column_List">
        id, name, sname, code, type, parent_id, sort_position, longitude, latitude, full_name, remarks
    </sql>

    <select id="languageInfo" resultType="java.util.HashMap">
       select id,name,code from t_language
    </select>

    <select id="selectParent" resultType="java.lang.String">
       select concat(ifnull(concat(a1.parent_id,','),''),ifnull(concat(a.parent_id,','),''),a.id)
from t_area a
left join t_area a1 on a.parent_id = a1.id
where a.id = #{areaId}
    </select>
</mapper>