苍穹外卖学习笔记(二十一)

取消订单

OrderController

 /*** 取消订单*/@PutMapping("/cancel/{id}")@ApiOperation("取消订单")public Result cancel(@PathVariable("id") Long id) throws Exception {orderService.userCancelById(id);return Result.success();}

OrderService

/*** 用户取消订单*/void userCancelById(Long id) throws Exception;

OrderServiceImpl

/*** 用户取消订单*/@Transactional@Overridepublic void userCancelById(Long id) throws Exception {// 根据订单id查询订单Orders ordersDB = orderMapper.selectById(id);//校验订单是否存在if (ordersDB == null) {throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);}//订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消if (ordersDB.getStatus() > 2) {throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);}Orders orders = Orders.builder().id(ordersDB.getId()).status(Orders.CANCELLED).cancelReason("用户取消").cancelTime(LocalDateTime.now()).build();// 订单处于待接单状态下取消，需要进行退款if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {//调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额//支付状态修改为 退款orders.setPayStatus(Orders.REFUND);}orderMapper.update(orders, new LambdaQueryWrapper<Orders>().eq(Orders::getId, id));}

再来一单

OrderController

 /*** 再来一单*/@PostMapping("/repetition/{id}")@ApiOperation("再来一单")public Result repetition(@PathVariable Long id) {orderService.repetition(id);return Result.success();}

OrderService

/*** 再来一单*/void repetition(Long id);

OrderServiceImpl

 /*** 再来一单*/@Override@Transactionalpublic void repetition(Long id) {Long userId = BaseContext.getCurrentId();LambdaQueryWrapper<OrderDetail> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(OrderDetail::getOrderId, id);List<OrderDetail> orderDetailList = orderDetailMapper.selectList(queryWrapper);List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {//将订单详情转换为购物车对象ShoppingCart shoppingCart = new ShoppingCart();// 将原订单详情里面的菜品信息重新复制到购物车对象中BeanUtils.copyProperties(x, shoppingCart, "id");shoppingCart.setUserId(userId);shoppingCart.setCreateTime(LocalDateTime.now());return shoppingCart;}).collect(Collectors.toList());// 将购物车对象批量添加到数据库MybatisBatch<ShoppingCart> mybatisBatch = new MybatisBatch<>(sqlSessionFactory, shoppingCartList);MybatisBatch.Method<ShoppingCart> method = new MybatisBatch.Method<>(ShoppingCartMapper.class);mybatisBatch.execute(method.insert());}