mapper.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.framework.twm.mapper.StudentMapper">
    <sql id="columns">
        a.id AS "id",
        a.create_time AS "createTime",
        a.create_user AS "createUser",
        a.update_time AS "updateTime",
        a.update_user AS "updateUser"
    </sql>

    <select id="findList" resultType="com.framework.twm.entity.Student">
        SELECT * FROM student
    </select>
</mapper>