苍穹外卖--用户下单

代码开发

DTO设计

根据用户下单接口的参数设计DTO：

在sky-pojo模块，OrdersSubmitDTO.java已定义

package com.sky.dto;

import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.Data;
import java.io.Serializable;
import java.math.BigDecimal;
import java.time.LocalDateTime;

@Data
public class OrdersSubmitDTO implements Serializable {
    //地址簿id
    private Long addressBookId;
    //付款方式
    private int payMethod;
    //备注
    private String remark;
    //预计送达时间
    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime estimatedDeliveryTime;
    //配送状态  1立即送出  0选择具体时间
    private Integer deliveryStatus;
    //餐具数量
    private Integer tablewareNumber;
    //餐具数量状态  1按餐量提供  0选择具体数量
    private Integer tablewareStatus;
    //打包费
    private Integer packAmount;
    //总金额
    private BigDecimal amount;
}

VO设计

根据用户下单接口的返回结果设计VO：

在sky-pojo模块，OrderSubmitVO.java已定义

package com.sky.vo;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
import java.math.BigDecimal;
import java.time.LocalDateTime;

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class OrderSubmitVO implements Serializable {
    //订单id
    private Long id;
    //订单号
    private String orderNumber;
    //订单金额
    private BigDecimal orderAmount;
    //下单时间
    private LocalDateTime orderTime;
}

Controller层

创建OrderController并提供用户下单方法：

package com.sky.controller.user;

import com.sky.dto.OrdersPaymentDTO;
import com.sky.dto.OrdersSubmitDTO;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.OrderService;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * 订单
 */
@RestController("userOrderController")
@RequestMapping("/user/order")
@Slf4j
@Api(tags = "C端-订单接口")
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：{}", ordersSubmitDTO);
        OrderSubmitVO orderSubmitVO = orderService.submitOrder(ordersSubmitDTO);
        return Result.success(orderSubmitVO);
    } 

}

Service层接口

创建OrderService接口，并声明用户下单方法：

package com.sky.service;

import com.sky.dto.*;
import com.sky.vo.OrderSubmitVO;

public interface OrderService {

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO);
}

Service层实现类

创建OrderServiceImpl实现OrderService接口：

package com.sky.service.impl;

/**
 * 订单
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;


    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、超出配送范围、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());

        //向订单表插入1条数据
        orderMapper.insert(order);

        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }

        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }
    
}

Mapper层

创建OrderMapper接口和对应的xml映射文件：

OrderMapper.java

package com.sky.mapper;

@Mapper
public interface OrderMapper {
    /**
     * 插入订单数据
     * @param order
     */
    void insert(Orders order);
}

OrderMapper.xml

<?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" parameterType="Orders" 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>

创建OrderDetailMapper接口和对应的xml映射文件：

OrderDetailMapper.java

package com.sky.mapper;

import com.sky.entity.OrderDetail;
import java.util.List;

@Mapper
public interface OrderDetailMapper {

    /**
     * 批量插入订单明细数据
     * @param orderDetails
     */
    void insertBatch(List<OrderDetail> orderDetails);

}

OrderDetailMapper.xml

<?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.OrderDetailMapper">

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

</mapper>