创单获取购物数据增加买一赠一寄件用户选择的验证,总的活动对象要判空

shopping-cart-application-service/src/main/java/cn/freemud/service/impl/calculate/promotion/BuyOneGiveOneSendService.java

@@ -267,6 +267,9 @@ public class BuyOneGiveOneSendService {
             return;
         }
 
+        if(discountResult == null){
+            throw new ServiceException(ResponseResult.SHOPPING_CART_BUY_ONE_SEND_GOODS_NOT_EMPTY);
+        }
 
         // 促销返回的赠送信息
         List<CalculationSharingDiscountResponseDto.CalculationDiscountResult.SendActivity> sendGoods = discountResult.getSendGoods();