新增标签关系接口添加判断逻辑

src/main/java/com/keymobile/tagmanager/api/TagRelCtrl.java

@@ -33,6 +33,9 @@ public class TagRelCtrl {
 		String userId = UserInfoUtils.getUserId();
 		//获取当前登录用户所属机构
 		String org = /**UserInfoUtils.getDataRoleOrg()*/String.valueOf(GrantedAuthHelper.getUserOrg());
+		if(sourceId.equals(targetId)) {
+			throw new Exception("can not make source and target as the same one.");
+		}
 		return tagRelService.addTagRel(sourceId, targetId, userId, org);
 	}