kmall-pt/kmall-admin/src/main/resources/mybatis/mapper/FootprintDao.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.kmall.admin.dao.FootprintDao">

    <!-- 可根据自己的需求，是否要使用 -->
    <resultMap type="com.kmall.admin.entity.FootprintEntity" id="footprintMap">
        <result property="id" column="id"/>
        <result property="userId" column="user_id"/>
        <result property="userName" column="user_name"/>
        <result property="goodsId" column="goods_id"/>
        <result property="goodsName" column="goods_name"/>
        <result property="addTime" column="add_time"/>
    </resultMap>

    <select id="queryObject" resultType="com.kmall.admin.entity.FootprintEntity">
		select * from mall_footprint where id = #{value}
	</select>

    <select id="queryList" resultMap="footprintMap">
        select a.* ,b.nickname as user_name,c.name as goods_name
        from mall_footprint a
        left join mall_user b on a.user_id = b.id
        left join mall_goods c on a.goods_id = c.id
        WHERE 1=1
        <if test="name != null and name != ''">
            AND b.username LIKE concat('%',#{name},'%')
        </if>
        <choose>
            <when test="sidx != null and sidx.trim() != ''">
                order by ${sidx} ${order}
            </when>
            <otherwise>
                order by a.id desc
            </otherwise>
        </choose>
        <if test="offset != null and limit != null">
            limit #{offset}, #{limit}
        </if>
    </select>

    <select id="queryTotal" resultType="int">
		select count(a.id) from mall_footprint a
        left join mall_user b on a.user_id = b.id
        WHERE 1=1
        <if test="name != null and name != ''">
            AND b.username LIKE concat('%',#{name},'%')
        </if>
	</select>

    <insert id="save" parameterType="com.kmall.admin.entity.FootprintEntity" useGeneratedKeys="true" keyProperty="id">
		insert into mall_footprint
		(
			`user_id`, 
			`goods_id`, 
			`add_time`
		)
		values
		(
			#{userId}, 
			#{goodsId}, 
			#{addTime}
		)
	</insert>

    <update id="update" parameterType="com.kmall.admin.entity.FootprintEntity">
        update mall_footprint
        <set>
            <if test="userId != null">`user_id` = #{userId},</if>
            <if test="goodsId != null">`goods_id` = #{goodsId},</if>
            <if test="addTime != null">`add_time` = #{addTime}</if>
        </set>
        where id = #{id}
    </update>

    <delete id="delete">
		delete from mall_footprint where id = #{value}
	</delete>

    <delete id="deleteBatch">
        delete from mall_footprint where id in
        <foreach item="id" collection="array" open="(" separator="," close=")">
            #{id}
        </foreach>
    </delete>

</mapper>