update 资料中心-删除文件夹

laws-modules/src/main/java/com/jero/modules/laws/dataCenter/service/impl/LawsDataCenterFolderServiceImpl.java

@@ -169,6 +169,16 @@ public class LawsDataCenterFolderServiceImpl extends ServiceImpl<LawsDataCenterF
 		if (CollectionUtils.isNotEmpty(lawsDataCenterFolders)) {
 			throw new JeroBootException(ResultCommon.EXIST_SUB_FOLDERS);
 		}
+
+		// 只剩一个文件夹也不能删除
+		LambdaQueryWrapper<LawsDataCenterFolder> queryWrapper1 = new LambdaQueryWrapper<>();
+		queryWrapper1.eq(LawsDataCenterFolder::getParentId, "0");
+		queryWrapper1.ne(LawsDataCenterFolder::getId, id);
+		List<LawsDataCenterFolder> existedRootFolders = list(queryWrapper1);
+		if (CollectionUtils.isEmpty(existedRootFolders)) {
+			throw new JeroBootException("删除失败，至少保留一个根节点");
+		}
+
 		removeById(id);
 		// 将该文件夹下面的文件夹关联删除
 		LambdaUpdateWrapper<LawsDataCenterFile> updateWrapper = new LambdaUpdateWrapper<>();