导入地址簿——需求分析与设计

产品原型

接口设计

数据库设计

导入地址簿——代码导入

导入地址簿——功能测试

没有问题

用户下单——需求分析与设计

业务说明

业务流程

接口设计

数据库设计

用户下单——代码开发

DTO设计和VO设计

Controller层中

@RequestMapping("/user/order")
@RestController("userOrderController")
@Api(tags="用户端订单相关接口")
@Slf4j
public class orderController {

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

Service层中

@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
     */
    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //处理各种业务异常（地址簿为空，购物车数据为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook==null) {
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //查询当前用户的购物车数据
        ShoppingCart shoppingCart = new ShoppingCart();
        Long userId= BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if(list==null||list.size()==0) {
            //抛出业务异常
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //2.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(userId);

        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList=new ArrayList<>();
        //3.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());  //前面有主键返回，设置当前订单明细关联的订单id
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);

        //4.清空当前用户的购物车数据
        shoppingCartMapper.deleteById(userId);
        //5.封装VO返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }
}

Mapper中

@Mapper
public interface OrderMapper {

    /**
     * 插入一条订单数据
     * @param orders
     */
    void insert(Orders orders);
}


@Mapper
public interface OrderDetailMapper {
    /**
     * 批量插入订单明细数据
     * @param orderDetailList
     */
    void insertBatch(List<OrderDetail> orderDetailList);
}

对应的两个映射文件中

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.sky.mapper.OrderMapper">
    <insert id="insert" useGeneratedKeys="true" keyProperty="id">
        insert into orders(number, status, user_id, address_book_id, order_time, checkout_time, pay_method, pay_status,
                           amount, remark, phone, address, consignee, estimated_delivery_time, delivery_status,
                            pack_amount, tableware_number, tableware_status)
        values
            (#{number},#{status},#{userId},#{addressBookId},#{orderTime},#{checkoutTime},#{payMethod},
             #{payStatus},#{amount},#{remark},#{phone},#{address},#{consignee},#{estimatedDeliveryTime},#{deliveryStatus},
             #{packAmount},#{tablewareNumber},#{tablewareStatus})
    </insert>
</mapper>

<mapper namespace="com.sky.mapper.OrderDetailMapper">

    <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>
</mapper>