删除节点加个判断防止报错

blade-service/blade-business/src/main/java/org/springblade/business/controller/InformationWriteQueryController.java

@@ -3549,7 +3549,10 @@ public R removeContractTreeNodeJudge(@RequestParam String ids) {
 
             JSONObject json = new JSONObject();
             json.put("operationObjIds", idArray);
-            String positionStr = position.substring(1);
+            String positionStr="";
+            if(position.length()>1){
+                positionStr=position.substring(1);
+            }
             json.put("operationObjName", positionStr);
             json.put("projectId", projectId);
             json.put("contractId", contractId);