基于springboot框架实现微信点餐系统，含微信支付，公众号开发，aop以及websocket思想.zip

package com.imooc.service.impl; import com.imooc.converter.OrderMaster2OrderDTOConverter; import com.imooc.dataobject.OrderDetail; import com.imooc.dataobject.OrderMaster; import com.imooc.dataobject.ProductInfo; import com.imooc.dto.CartDTO; import com.imooc.dto.OrderDTO; import com.imooc.enums.OrderStatusEnum; import com.imooc.enums.PayStatusEnum; import com.imooc.enums.ResultEnum; import com.imooc.exception.SellException; import com.imooc.repository.OrderDetailRepository; import com.imooc.repository.OrderMasterRepository; import com.imooc.service.*; import com.imooc.utils.KeyUtil; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.BeanUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageImpl; import org.springframework.data.domain.Pageable; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import org.springframework.util.CollectionUtils; import java.math.BigDecimal; import java.math.BigInteger; import java.util.List; import java.util.stream.Collectors; @Service @Slf4j public class OrderServiceImpl implements OrderService { @Autowired private ProductService productService; @Autowired private OrderDetailRepository orderDetailRepository; @Autowired private OrderMasterRepository orderMasterRepository; @Autowired private PayService payService; @Autowired private PushMessageService pushMessageService; @Autowired private WebSocket webSocket; @Override @Transactional public OrderDTO create(OrderDTO orderDTO) { String orderId = KeyUtil.genUniqueKey(); BigDecimal orderAmount = new BigDecimal(BigInteger.ZERO); // List<CartDTO> cartDTOList = new ArrayList<>(); //1. 查询商品（数量, 价格） for (OrderDetail orderDetail: orderDTO.getOrderDetailList()) { ProductInfo productInfo = productService.findOne(orderDetail.getProductId()); if (productInfo == null) { throw new SellException(ResultEnum.PRODUCT_NOT_EXIST); } //2. 计算订单总价 orderAmount = productInfo.getProductPrice() .multiply(new BigDecimal(orderDetail.getProductQuantity())) .add(orderAmount); //订单详情入库 orderDetail.setDetailId(KeyUtil.genUniqueKey()); orderDetail.setOrderId(orderId); BeanUtils.copyProperties(productInfo, orderDetail); orderDetailRepository.save(orderDetail); // CartDTO cartDTO = new CartDTO(orderDetail.getProductId(), orderDetail.getProductQuantity()); // cartDTOList.add(cartDTO); } //3. 写入订单数据库（orderMaster和orderDetail） OrderMaster orderMaster = new OrderMaster(); orderDTO.setOrderId(orderId); BeanUtils.copyProperties(orderDTO, orderMaster); orderMaster.setOrderAmount(orderAmount); orderMaster.setOrderStatus(OrderStatusEnum.NEW.getCode()); orderMaster.setPayStatus(PayStatusEnum.WAIT.getCode()); orderMasterRepository.save(orderMaster); //4. 扣库存 List<CartDTO> cartDTOList = orderDTO.getOrderDetailList().stream().map(e -> new CartDTO(e.getProductId(), e.getProductQuantity()) ).collect(Collectors.toList()); productService.decreaseStock(cartDTOList); //发送websocket消息 webSocket.sendMessage(orderDTO.getOrderId()); return orderDTO; } @Override public OrderDTO findOne(String orderId) { OrderMaster orderMaster = orderMasterRepository.findOne(orderId); if (orderMaster == null) { throw new SellException(ResultEnum.ORDER_NOT_EXIST); } List<OrderDetail> orderDetailList = orderDetailRepository.findByOrderId(orderId); if (CollectionUtils.isEmpty(orderDetailList)) { throw new SellException(ResultEnum.ORDERDETAIL_NOT_EXIST); } OrderDTO orderDTO = new OrderDTO(); BeanUtils.copyProperties(orderMaster, orderDTO); orderDTO.setOrderDetailList(orderDetailList); return orderDTO; } @Override public Page<OrderDTO> findList(String buyerOpenid, Pageable pageable) { Page<OrderMaster> orderMasterPage = orderMasterRepository.findByBuyerOpenid(buyerOpenid, pageable); List<OrderDTO> orderDTOList = OrderMaster2OrderDTOConverter.convert(orderMasterPage.getContent()); return new PageImpl<OrderDTO>(orderDTOList, pageable, orderMasterPage.getTotalElements()); } @Override @Transactional public OrderDTO cancel(OrderDTO orderDTO) { OrderMaster orderMaster = new OrderMaster(); //判断订单状态 if (!orderDTO.getOrderStatus().equals(OrderStatusEnum.NEW.getCode())) { log.error("【取消订单】订单状态不正确, orderId={}, orderStatus={}", orderDTO.getOrderId(), orderDTO.getOrderStatus()); throw new SellException(ResultEnum.ORDER_STATUS_ERROR); } //修改订单状态 orderDTO.setOrderStatus(OrderStatusEnum.CANCEL.getCode()); BeanUtils.copyProperties(orderDTO, orderMaster); OrderMaster updateResult = orderMasterRepository.save(orderMaster); if (updateResult == null) { log.error("【取消订单】更新失败, orderMaster={}", orderMaster); throw new SellException(ResultEnum.ORDER_UPDATE_FAIL); } //返回库存 if (CollectionUtils.isEmpty(orderDTO.getOrderDetailList())) { log.error("【取消订单】订单中无商品详情, orderDTO={}", orderDTO); throw new SellException(ResultEnum.ORDER_DETAIL_EMPTY); } List<CartDTO> cartDTOList = orderDTO.getOrderDetailList().stream() .map(e -> new CartDTO(e.getProductId(), e.getProductQuantity())) .collect(Collectors.toList()); productService.increaseStock(cartDTOList); //如果已支付, 需要退款 if (orderDTO.getPayStatus().equals(PayStatusEnum.SUCCESS.getCode())) { payService.refund(orderDTO); } return orderDTO; } @Override @Transactional public OrderDTO finish(OrderDTO orderDTO) { //判断订单状态 if (!orderDTO.getOrderStatus().equals(OrderStatusEnum.NEW.getCode())) { log.error("【完结订单】订单状态不正确, orderId={}, orderStatus={}", orderDTO.getOrderId(), orderDTO.getOrderStatus()); throw new SellException(ResultEnum.ORDER_STATUS_ERROR); } //修改订单状态 orderDTO.setOrderStatus(OrderStatusEnum.FINISHED.getCode()); OrderMaster orderMaster = new OrderMaster(); BeanUtils.copyProperties(orderDTO, orderMaster); OrderMaster updateResult = orderMasterRepository.save(orderMaster); if (updateResult == null) { log.error("【完结订单】更新失败, orderMaster={}", orderMaster); throw new SellException(ResultEnum.ORDER_UPDATE_FAIL); } //推送微信模版消息 pushMessageService.orderStatus(orderDTO); return orderDTO; } @Override @Transactional public OrderDTO paid(OrderDTO orderDTO) { //判断订单状态 if (!orderDTO.getOrderStatus().equals(OrderStatusEnum.NEW.getCode())) { log.error("【订单支付完成】订单状态不正确, orderId={}, orderStatus={}", orderDTO.getOrderId(), orderDTO.getOrderStatus()); throw new SellException(ResultEnum.ORDER_STATUS_ERROR); } //判断支付状态 if (!orderDTO.getPayStatus().equals(PayStatusEnum.WAIT.getCode())) { log.error("【订单支付完成】订单支付状态不正确, orderDTO={}", orderDTO); throw ne