feat(material-task): 新增导入跳过空数据

src/main/java/mjkf/xinke/main/service/DataService.java

@@ -38,8 +38,10 @@ public abstract class DataService<M extends BaseMapper<T>, T> extends ServiceImp
             }
         }).collect(Collectors.toList());
         for (T item : list) {
+            if (item != null) {
                 this.saveOrUpdateByIndex(item);
             }
+        }
         return list;
     }
 
@@ -91,5 +93,6 @@ public abstract class DataService<M extends BaseMapper<T>, T> extends ServiceImp
         // todo 排序
         return result;
     }
+
     abstract public LambdaQueryWrapper<T> trendQuery(Object data, Integer year, Integer month);
 }