java生鲜后台系统.rar

package com.imooc.mall.service.impl; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import com.google.zxing.WriterException; import com.google.zxing.qrcode.encoder.QRCode; import com.imooc.mall.common.Constant; import com.imooc.mall.exception.ImoocMallException; import com.imooc.mall.exception.ImoocMallExceptionEnum; import com.imooc.mall.filter.UserFilter; import com.imooc.mall.model.dao.CartMapper; import com.imooc.mall.model.dao.OrderItemMapper; import com.imooc.mall.model.dao.OrderMapper; import com.imooc.mall.model.dao.ProductMapper; import com.imooc.mall.model.pojo.Order; import com.imooc.mall.model.pojo.OrderItem; import com.imooc.mall.model.pojo.Product; import com.imooc.mall.model.requests.CreateOrderReq; import com.imooc.mall.model.vo.CartVO; import com.imooc.mall.model.vo.OrderItemVO; import com.imooc.mall.model.vo.OrderVO; import com.imooc.mall.service.CartService; import com.imooc.mall.service.OrderService; import com.imooc.mall.service.ProductService; import com.imooc.mall.service.UserService; import com.imooc.mall.util.OrderCodeFactory; import com.imooc.mall.util.QRCodeGenerate; import org.springframework.beans.BeanUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import org.springframework.util.CollectionUtils; import org.springframework.util.ObjectUtils; import org.springframework.web.context.request.RequestAttributes; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.net.InetAddress; import java.net.UnknownHostException; import java.util.ArrayList; import java.util.Date; import java.util.List; /** * 订单Service实现类 * @author Rex * @create 2021-02-17 10:14 */ @Service public class OrderServiceImpl implements OrderService { @Autowired private CartService cartService; @Autowired private ProductMapper productMapper; @Autowired private CartMapper cartMapper; @Autowired private OrderMapper orderMapper; @Autowired private OrderItemMapper orderItemMapper; @Autowired private UserService userService; @Value("${file.upload.ip}") private String ip; //数据库事物 @Transactional(rollbackFor = {Exception.class}) @Override public String create(CreateOrderReq createOrderReq){ //拿到用户ID Integer userId = UserFilter.currentUser.getId(); //从购物车查找已勾选的商品 List<CartVO> cartVOList = cartService.list(userId); ArrayList<CartVO> cartVOListTemp = new ArrayList<>(); for (int i = 0; i < cartVOList.size(); i++) { CartVO cartVO = cartVOList.get(i); if (cartVO.getSelected().equals(Constant.Cart.CHECKED)){ cartVOListTemp.add(cartVO); } } cartVOList = cartVOListTemp; //如果购物车已勾选的为空，报错 if (CollectionUtils.isEmpty(cartVOList)) { throw new ImoocMallException(ImoocMallExceptionEnum.CART_EMPTY); } //判断商品是否存在、上下架状态、库存 validSaleStatusAndStock(cartVOList); //把购物车对象转为订单item对象 List<OrderItem> orderItemList = cartVOListToOrderItemList(cartVOList); //扣库存 for (int i = 0; i < orderItemList.size(); i++) { OrderItem orderItem = orderItemList.get(i); Product product = productMapper.selectByPrimaryKey(orderItem.getProductId()); Integer stock = product.getStock() - orderItem.getQuantity(); if (stock < 0) { throw new ImoocMallException(ImoocMallExceptionEnum.NOT_ENOUGH ); } product.setStock(stock); productMapper.updateByPrimaryKeySelective(product); } //把购物车中的商品已勾选商品删除 cleanCart(cartVOList); //生成订单 Order order = new Order(); //生成订单号 String orderNo = OrderCodeFactory.getOrderCode(Long.valueOf(userId)); order.setOrderNo(orderNo); order.setUserId(userId); order.setTotalPrice(totalPrice(orderItemList)); order.setReceiverName(createOrderReq.getReceiverName()); order.setReceiverAddress(createOrderReq.getReceiverAddress()); order.setReceiverMobile(createOrderReq.getReceiverMobile()); order.setOrderStatus(Constant.OrderStatusEnum.NOT_PAID.getCode()); order.setPostage(0); order.setPaymentType(1); //插入到Order表 orderMapper.insertSelective(order); //循环保存每个商品到order_item表 for (int i = 0; i < orderItemList.size(); i++) { OrderItem orderItem = orderItemList.get(i); orderItem.setOrderNo(order.getOrderNo()); orderItemMapper.insertSelective(orderItem); } //把结果返回 return orderNo; } private Integer totalPrice(List<OrderItem> orderItemList) { Integer totalPrice = 0; for (int i = 0; i < orderItemList.size(); i++) { OrderItem orderItem = orderItemList.get(i); totalPrice += orderItem.getTotalPrice(); } return totalPrice; } private void cleanCart(List<CartVO> cartVOList) { for (int i = 0; i < cartVOList.size(); i++) { CartVO cartVO = cartVOList.get(i); cartMapper.deleteByPrimaryKey(cartVO.getId()); } } private List<OrderItem> cartVOListToOrderItemList(List<CartVO> cartVOList) { List<OrderItem> orderItemList = new ArrayList<>(); for (int i = 0; i < cartVOList.size(); i++) { CartVO cartVO = cartVOList.get(i); OrderItem orderItem = new OrderItem(); orderItem.setProductId(cartVO.getProductId()); //记录商品快照信息 orderItem.setProductName(cartVO.getProductName()); orderItem.setProductImg(cartVO.getProductImage()); orderItem.setUnitPrice(cartVO.getPrice()); orderItem.setQuantity(cartVO.getQuantity()); orderItem.setTotalPrice(cartVO.getTotalPrice()); orderItemList.add(orderItem); } return orderItemList; } private void validSaleStatusAndStock(List<CartVO> cartVOList) { for (int i = 0; i < cartVOList.size(); i++) { CartVO cartVO = cartVOList.get(i); Integer productId = cartVO.getProductId(); Integer count = cartVO.getQuantity(); Product product = productMapper.selectByPrimaryKey(productId); //判断商品是否存在，商品是否上架 if (product == null || !product.getStatus().equals(Constant.SaleStatus.SALE)){ throw new ImoocMallException(ImoocMallExceptionEnum.NOT_SALE); } //判断商品库存 if (count > product.getStock()){ throw new ImoocMallException(ImoocMallExceptionEnum.NOT_ENOUGH); } } } @Override public OrderVO detail(String orderNo){ Order order = orderMapper.selectByOrderNo(orderNo); //订单不存在，则报错 if (order == null){ throw new ImoocMallException(ImoocMallExceptionEnum.NO_ORDER); } //订单存在，需要判断所属 Integer userId = UserFilter.currentUser.getId(); if (!order.getUserId().equals(userId)){ throw new ImoocMallException(ImoocMallExceptionEnum.NOT_YOUR_ORDER); } OrderVO orderVO = getOrderVO(order); return orderVO; } private OrderVO getOrderVO(Order order) { OrderVO orderVO = new OrderVO();