public IActionResult Create([FromBody]OrderDto orderDto)
        {

            string userId = User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Name).Value;
            Guid gORderNumber = Guid.NewGuid();

            string OrderNumber = gORderNumber.ToString();

            //var userId = int.Parse(context.Principal.Identity.Name);
            var user = _userService.GetById(int.Parse(userId));


            try
            {
                Order order = orderDto.ToModel();

                // Audit fields
                order.createdBy = user.Username;
                order.Created = DateTime.Now;
                order.OrderNumber = OrderNumber;

                Order returnedOrder = _orderService.Create(order, user);

                OrderDto r = OrderDto.FromModel(returnedOrder);
                return Ok(r);

            }
            catch (AppException ex)
            {
                //var Message = ex.Message;
                return ErrorResponse(ex.Message);
                //return BadRequest(new  { message = ex.Message });
            }
        }
        public void AddOrder(OrderDto dto)
        {
            var goods = GoodsRepository.Instance.Find(x => x.Id == dto.GoodsId).FirstOrDefault();

            if (goods == null)
            {
                throw new ServiceException("不存在此商品");
            }
            if (Convert.ToInt32(dto.Quantity) > goods.Quantity)
            {
                throw new ServiceException("此商品库存不足");
            }
            var userId = UserService.GetCurrentUser().Id;
            var user   = UserService.Instance.GetUser(userId);

            if (user == null)
            {
                throw new ServiceException("当前用户未登录,不能完成下单操作");
            }
            if (user.Integral < goods.Integral)
            {
                throw new ServiceException("对不起,您的积分暂时不足以兑换此商品,请选择其它商品进行兑换");
            }

            var entity = dto.ToModel <Order>();

            entity.Integral = goods.Integral;
            entity.OrderNo  = OrderHelper.GetOrderNo();
            entity.State    = OrderStateEnum.未发货;
            entity.UserId   = userId;
            //减库存
            goods.Quantity = goods.Quantity - Convert.ToInt32(dto.Quantity);
            orderRepository.Transaction(() =>
            {
                orderRepository.Insert(entity);
                GoodsRepository.Instance.Save(goods);
            });
        }