更新扫描量为null

paper-library-business/src/main/java/com/qmth/paper/library/business/service/impl/PaperScanTaskServiceImpl.java

@@ -218,6 +218,11 @@ public class PaperScanTaskServiceImpl extends ServiceImpl<PaperScanTaskMapper, P
 
             // 删除该任务扫描的的数据
             paperLibraryService.removeByIds(willDeletePaperLibraryList.stream().map(PaperLibrary::getId).collect(Collectors.toList()));
+
+            // 清除扫描量
+            paperScanTask.setScanCount(null);
+            paperScanTask.updateInfo(requestUser.getId());
+            this.updateById(paperScanTask);
         }
     }