fix

shopping-cart-application-service/src/main/java/cn/freemud/service/impl/SetMealServiceImpl.java

@@ -160,7 +160,10 @@ public class SetMealServiceImpl implements IPromotionService {
             return number - cartGoods.getQty() < 0 ? "该商品限" + number + "份优惠 超出按照原价计算哦" : "";
         } else {
             cartGoods.setAmount((cartGoods.getFinalPrice() + productGroupAmount) * cartGoods.getQty());
-            return "该商品限" + goodsMap.get(cartGoods.getGoodsId()).getDiscounts().get(0).getActualGoodsNumber() + "份优惠 超出按照原价计算哦";
+            if (CollectionUtils.isNotEmpty(goodsMap.get(cartGoods.getGoodsId()).getDiscounts())) {
+                return "该商品限" + goodsMap.get(cartGoods.getGoodsId()).getDiscounts().get(0).getActualGoodsNumber() + "份优惠 超出按照原价计算哦";
+            }
+            return "";
         }
     }
 }