用户下单功能代码开发

sky-server/src/main/java/com/sky/controller/user/OrderController.java

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+package com.sky.controller.user;
+
+
+import com.sky.dto.OrdersSubmitDTO;
+import com.sky.result.Result;
+import com.sky.service.OrderService;
+import com.sky.vo.OrderSubmitVO;
+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.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RestController("userOrderController")
+@RequestMapping("/user/order")
+@Api(tags = "用户端订单相关接口")
+@Slf4j
+public class OrderController {
+
+    @Autowired
+    private OrderService orderService;
+
+
+    @PostMapping("/submit")
+    @ApiOperation("用户下单接口")
+    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);
+    }
+}

sky-server/src/main/java/com/sky/mapper/OrderDetailMapper.java

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+package com.sky.mapper;
+
+
+import com.sky.entity.OrderDetail;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+
+@Mapper
+public interface OrderDetailMapper {
+
+
+    /**
+     * 批量插入订单明细数据
+     * @param orderDetailList
+     */
+    void insertBatch(List<OrderDetail> orderDetailList);
+}

sky-server/src/main/java/com/sky/mapper/OrderMapper.java

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+package com.sky.mapper;
+
+
+import com.sky.entity.Orders;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface OrderMapper {
+
+    /**
+     * 插入订单数据
+     * @param orders
+     */
+    void insert(Orders orders);
+}

sky-server/src/main/java/com/sky/service/OrderService.java

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+package com.sky.service;
+
+import com.sky.dto.OrdersSubmitDTO;
+import com.sky.vo.OrderSubmitVO;
+
+
+
+
+public interface OrderService {
+
+    /**
+     * 用户下单
+     * @param ordersSubmitDTO
+     * @return
+     */
+    OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO);
+}

sky-server/src/main/java/com/sky/service/impl/OrderServiceImpl.java

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+package com.sky.service.impl;
+
+import com.sky.constant.MessageConstant;
+import com.sky.context.BaseContext;
+import com.sky.dto.OrdersSubmitDTO;
+import com.sky.entity.AddressBook;
+import com.sky.entity.OrderDetail;
+import com.sky.entity.Orders;
+import com.sky.entity.ShoppingCart;
+import com.sky.exception.AddressBookBusinessException;
+import com.sky.exception.ShoppingCartBusinessException;
+import com.sky.mapper.AddressBookMapper;
+import com.sky.mapper.OrderDetailMapper;
+import com.sky.mapper.OrderMapper;
+import com.sky.mapper.ShoppingCartMapper;
+import com.sky.result.Result;
+import com.sky.service.OrderService;
+import com.sky.service.UserService;
+import com.sky.vo.OrderSubmitVO;
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+
+@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) {
+
+        //首先处理业务异常（地址簿为空 购物车数据为空）
+
+        //地址簿为空
+        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
+        if(addressBook==null){
+            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
+        }
+
+
+        //购物车为空
+        Long userId = BaseContext.getCurrentId();
+        ShoppingCart shoppingCart = new ShoppingCart();
+        shoppingCart.setUserId(userId);
+        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()));   //使用时间戳作为订单号
+        orders.setPhone(addressBook.getPhone());
+        orders.setConsignee(addressBook.getConsignee());
+        orders.setUserId(userId);
+
+        orderMapper.insert(orders);
+
+        List<OrderDetail> orderDetailList = new ArrayList<>();
+        //向订单明细表插入多条数据
+        for(ShoppingCart cart:shoppingCartList){
+            OrderDetail orderDetail = new OrderDetail();
+            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);
+        }
+        //批量插入
+        orderDetailMapper.insertBatch(orderDetailList);
+
+        //清空当前用户的购物车数据
+        shoppingCartMapper.deleteByUserId(userId);
+
+        //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;
+    }
+}