ks/target/classes/mapper/CouponMapper.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.zt.mapper.CouponMapper">

    <resultMap id="BaseResultMap" type="com.zt.pojo.Coupon">
            <id property="id" column="id" jdbcType="BIGINT"/>
            <result property="name" column="name" jdbcType="VARCHAR"/>
            <result property="faceValue" column="face_value" jdbcType="DECIMAL"/>
            <result property="terms" column="terms" jdbcType="DECIMAL"/>
    </resultMap>

    <sql id="Base_Column_List">
        id,name,face_value,
        terms
    </sql>
</mapper>