苍穹外卖-Day09（用户下单）

1.需求设计和分析

Path:/user/order/submit

Method:POST

2.代码开发

//地址为空 AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId()); if(addressBook == null){ throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL); } //购物车为空 Long useId = BaseContext.getCurrentId(); ShoppingCart shoppingCart = new ShoppingCart(); shoppingCart.setUserId(useId); List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart); if(shoppingCartList == null || shoppingCartList.size() == 0){ throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL); } //向订单表插入一条数据 Orders orders = new Orders(); BeanUtils.copyProperties(ordersSubmitDTO,orders); orders.setOrderTime(LocalDateTime.now()); orders.setPayStatus(Orders.UN_PAID); orders.setStatus(Orders.PENDING_PAYMENT); orders.setNumber(String.valueOf(System.currentTimeMillis())); orders.setPhone(addressBook.getPhone()); orders.setConsignee(addressBook.getConsignee()); orders.setUserId(useId); orderMapper.insert(orders); //向订单明细表插入多条数据 List<OrderDetail> orderDetailList =new ArrayList<>(); for (ShoppingCart cart : shoppingCartList) { OrderDetail orderDetail = new OrderDetail(); BeanUtils.copyProperties(cart,orderDetail); orderDetail.setOrderId(orders.getId()); orderDetailList.add(orderDetail); } orderDetailMapper.insertBatch(orderDetailList); //下单成功后，清空购物车数据 shoppingCartMapper.deleteByUserId(useId); //封装VO返回结果 OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder() .id(orders.getId()) .orderNumber(orders.getNumber()) .orderTime(orders.getOrderTime()) .orderAmount(orders.getAmount()) .build(); return orderSubmitVO;