submit:

zhongzheng-system/src/main/java/com/zhongzheng/modules/order/service/impl/OrderGoodsServiceImpl.java

@@ -629,7 +629,7 @@ public class OrderGoodsServiceImpl extends ServiceImpl<OrderGoodsMapper, OrderGo
             if (nowTime < goods.getValidityStartTime() || nowTime > goods.getValidityEndTime()){
                 throw new CustomException("存在过期商品，请检查！");
             }
-            if (bo.getIsCart() == 1){
+            if (ObjectUtils.isNotNull(bo.getIsCart()) && bo.getIsCart() == 1){
                 //购物车校验
                 if(checkUnique(item,bo.getUserId())){
                     throw new CustomException("存在购物车已有商品，请检查！");