hust-epi/whepi-web/src/main/resources/mapper/SysArea.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="com.bofeng.dao.SysAreaMapper">
    <select id="selectProvince" resultType="com.bofeng.entity.SysArea">
        select province from sys_area where province='湖北省' group by province
    </select>

    <select id="selectCityByProvince" resultType="com.bofeng.entity.SysArea">
        SELECT * from sys_area where province='湖北省' and (area='市辖区' or city='省直辖县级行政区划' or area='恩施市')
    </select>

    <select id="selectAreaByCity" resultType="com.bofeng.entity.SysArea">
        select * from sys_area where city='武汉市'
    </select>

</mapper>