Vue+MySQL实现购物车的增删改查

1，创建简单数据库数据表

2，创建Mapper文件

 <!--查询商品-->
    <select id="selectcommodity" resultType="Commodity">
        select * from commodity
    </select>

    <!--添加商品-->
    <insert id="insertcommodity" >
        insert into commodity (name,price,number) values (#{name},#{price},#{number})
    </insert>

    <!--删除商品-->
    <delete id="deletecommodityById" parameterType="int">
       delete from commodity where id=#{id};
    </delete>

    <!--修改商品-->
    <update id="updatecommdity">
        update commodity
        set name=#{name},price=#{price},number=#{number}
        where id=#{id}
    </update>

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