文章目录

• • 概要
  • 整体架构流程
  • 技术细节
  • 小结

概要

订单状态统计是电子商务、供应链管理、客户服务等多个领域中的一项核心业务需求.

需求分析以及接口设计

技术细节

1.Controller层:

 @ApiOperation("各个状态的订单统计")
    @GetMapping("/statistics")
    public Result<OrderStatisticsVO> statistics(){
        log.info("各个状态的订单统计");
        OrderStatisticsVO orderStatisticsVO = orderService.statistics();
        return Result.success(orderStatisticsVO);
    }

2.Service层:

 @Override
    public OrderStatisticsVO statistics() {
        //根据订单的状态查询出订单的数量
        //待接单
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        //已接单
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        //派送中
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        //封装到VO中
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

3.Mapper层:

@Select("select count(id) from `sky-take-out`.orders where status = #{status}")
    Integer countStatus(Integer status);

效果展示