苍穹外卖8.2

用户下单

商品种类、数量：数据来自于用户的购物车

订单总额：总额由两部分构成：1.菜品费用2.其他费用

手机号、地址：来自于地址簿

代码开发

controller

@RestController("userOrderController")//起个bean的别名因为等会再admin也会创建一个controller
@Slf4j
@RequestMapping("/user/order")
@Api(tags = "用户端订单相关接口")
public class OrderController {

    @Autowired
    private OrderService orderService;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @PostMapping("/submit")
    @ApiOperation("用户下单")
    public Result<OrderSubmitVO> submit(@RequestBody OrdersSubmitDTO ordersSubmitDTO){
        log.info("用户下单，参数为:{}",ordersSubmitDTO);
        OrderSubmitVO orderSubmitVO = orderService.submitOrder(ordersSubmitDTO);
        return Result.success(orderSubmitVO);
    }

}

service

@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //业务异常处理（为空地址簿）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //业务异常处理（购物车数据为空）
        ShoppingCart shoppingCart = new ShoppingCart();
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);//至少查询对应用户的购物车
        if(list == null){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //1.向订单表插入一条数据
        Orders orders = new Orders();//自己去看下Orders里面定义的一些常量
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());//下单时间设置
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);//设置订单为待付款
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);

        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = new ArrayList<>();
        //2.向订单明细表插入n条数据
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail = new OrderDetail();//订单明细
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单id
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);//批量插入
        //3.清空用户的购物车数据
        shoppingCartMapper.deleteByUserId(userId);
        //4.封装VO返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();

        return orderSubmitVO;
    }
}

orderDetailMapper.xml

<insert id="insertBatch">
        insert into order_detail (name, image, order_id, dish_id, setmeal_id, dish_flavor,number,amount)
        values 
    <foreach collection="orderDetailList" item="od" separator=",">
        (#{od.name},#{od.image},#{od.orderId},#{od.dishId},#{od.setmealId},#{od.dishFlavor},#{od.number},#{od.amount})
    </foreach>
    </insert>

orderMapper.xml

    <insert id="insert" useGeneratedKeys="true" keyProperty="id">-- 返回下主键值
        insert into orders(number, status, user_id, address_book_id, order_time,checkout_time,
                           pay_method, pay_status,amount, remark, phone, address, user_name, consignee,estimated_delivery_time,
                           delivery_status,delivery_time, pack_amount, tableware_number, tableware_status)
        values
            (#{number},#{status},#{userId},#{addressBookId},#{orderTime},#{checkoutTime},#{payMethod}
            ,#{payStatus},#{amount},#{remark},#{phone},#{address},#{userName},#{consignee},
            #{estimatedDeliveryTime},#{deliveryStatus},#{deliveryTime},#{packAmount},#{tablewareNumber},#{tablewareStatus})

    </insert>