<insert id="batchInsert" parameterType="list" >
    insert into mmall_order_item (id, user_id, order_no,
      product_id, product_name, product_image,
      current_unit_price, quantity, total_price,
      create_time, update_time)
    values
    <foreach collection="orderItemList" index="index" item="item" separator=",">
      (
      #{item.id},#{item.userId},#{item.orderNo},#{item.productId},#{item.productName},#{item.productImage},#{item.currentUnitPrice},#{item.quantity},
      #{item.totalPrice},now(),now()
      )
    </foreach>
  </insert>