文章目录

• • 概要
  • 整体架构流程
  • 技术细节
  • 小结

概要

取消订单是电子商务、外卖平台、在线零售等多个行业中常见的业务需求之一。这项功能允许消费者或商家取消已下的订单，通常是因为各种原因（如商品缺货、配送问题、支付问题等）。

需求分析以及接口设计

技术细节

1.Controller层:

@ApiOperation("取消订单")
    @PutMapping("/cancel")
    public Result rejection(@RequestBody OrdersCancelDTO ordersCancelDTO){
        log.info("取消订单,{}",ordersCancelDTO);
        orderService.cancel(ordersCancelDTO);
        return Result.success();
    }

2.Service层:

public void cancel(OrdersCancelDTO ordersCancelDTO) {
        Orders order = orderMapper.getById(ordersCancelDTO.getId());

        //获取到支付状态
        Integer payStatus = order.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款(略)

        }
        Orders orders = new Orders();
        orders.setId(orders.getId());
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

3.Mapper层:

<update id="update" parameterType="com.sky.entity.Orders">
        update orders
        <set>
            <if test="cancelReason != null and cancelReason!='' ">
                cancel_reason=#{cancelReason},
            </if>
            <if test="rejectionReason != null and rejectionReason!='' ">
                rejection_reason=#{rejectionReason},
            </if>
            <if test="cancelTime != null">
                cancel_time=#{cancelTime},
            </if>
            <if test="payStatus != null">
                pay_status=#{payStatus},
            </if>
            <if test="payMethod != null">
                pay_method=#{payMethod},
            </if>
            <if test="checkoutTime != null">
                checkout_time=#{checkoutTime},
            </if>
            <if test="status != null">
                status = #{status},
            </if>
            <if test="deliveryTime != null">
                delivery_time = #{deliveryTime}
            </if>
        </set>
        where id = #{id}
    </update>

效果展示