SystemSetDAO.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">

<!-- 配置表 -->
<mapper namespace="com.yiboshi.science.dao.SystemSetDAO">
    <sql id="allColumns">
        t.id as id, t.name as name, t.value as value, t.explain as explain
    </sql>
</mapper>