共享库存修改

eladmin-system/src/main/java/cn/ysk/cashier/mapper/product/TbProductMapper.java

@@ -33,6 +33,9 @@ import java.util.stream.Collectors;
 @Mapper(componentModel = "spring", unmappedTargetPolicy = ReportingPolicy.IGNORE)
 public interface TbProductMapper extends BaseMapper<TbProductDto, TbProduct> {
     default List<Integer> map(String value) {
+        if (value == null || value.isEmpty()) {
+            return null;
+        }
         return ListUtil.stringChangeIntegerList(value);
     }
 
@@ -46,4 +49,4 @@ public interface TbProductMapper extends BaseMapper<TbProductDto, TbProduct> {
                 .map(String::valueOf)
                 .collect(Collectors.joining(","));
     }
-}
+}