✅P281_商城业务-订单服务-保存订单数据

保存订单和订单项数据

**cfmall-order/src/main/java/com/gyz/cfmall/order/service/impl/OrderServiceImpl.java**

见： this.saveOrder(order);

添加@Transactional(rollbackFor = Exception.class)注解，保证保存订单和订单项信息处于一个事务，有异常回滚数据

    @Transactional(rollbackFor = Exception.class)
    @Override
    public SubmitOrderResponseVo submitOrder(OrderSubmitVo orderSubmitVo) {
        SubmitOrderResponseVo responseVo = new SubmitOrderResponseVo();
        MemberResponseVo memberResponseVo = LoginUserInterceptor.loginUser.get();
        String token = orderSubmitVo.getOrderToken();
        //脚本执行的返回结果： 0-代表令牌校验失败, 1-代表令牌成功删除即成功
        String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
        //Arg1：用DefaultRedisScript的构造器封装脚本和返回值类型； Arg2：用于存放Redis中token的key；Arg3：用于比较的token，即浏览器存储的token
        //令牌的验证和删除必须保证原子性
        Long response = redisTemplate.execute(
                new DefaultRedisScript<>(script, Long.class),
                Collections.singletonList(OrderConstant.USER_ORDER_TOKEN_PREFIX.toString() + memberResponseVo.getId()),
                token);
        if (response != null && response == 0) {
            responseVo.setCode(1);
            return responseVo;
        } else {
            //TODO：令牌校验成功，去创建订单，校验价格，所库存
            submitVoThreadLocal.set(orderSubmitVo);
            //1、创建订单、订单项等信息
            OrderCreateTo order = this.createOrder();
            BigDecimal payAmount = order.getOrder().getPayAmount();
            double substractValue = 0.01;
            if (Math.abs(orderSubmitVo.getPayPrice().subtract(payAmount).doubleValue()) < substractValue) {
                //保存订单和订单项信息
                this.saveOrder(order);
            } else {
                responseVo.setCode(2);
                return responseVo;
            }
        }
        return null;
    }

    private void saveOrder(OrderCreateTo order) {
        //获取订单信息
        OrderEntity orderEntity = order.getOrder();
        orderEntity.setModifyTime(new Date());
        orderEntity.setCreateTime(new Date());
        //保存订单
        this.baseMapper.insert(orderEntity);
        //获取订单项信息
        List<OrderItemEntity> orderItems = order.getOrderItems();
        //批量保存订单项数据
        orderItemService.saveBatch(orderItems);
    }