fix

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

@@ -1821,7 +1821,7 @@ public class ShoppingCartNewServiceImpl implements ShoppingCartNewService {
             String spqId = spuId.substring(CommonsConstant.COUPON_PREFIX.length());
             if (CollectionUtils.isNotEmpty(allCartGoodsList)){
                 int sum = allCartGoodsList.stream().filter(p -> p.getSpuId().equals(spqId)).mapToInt(CartGoods::getQty).sum();
-                if (sum + 1 > todayAvailableTimes){
+                if (sum + cartGoods.getQty() > todayAvailableTimes){
                     throw new ServiceException(ResponseResult.SHOPPING_CART_GOODS_COUPON_CAN_NOT_USE);
                 }
             }