//tt push

mallinkCallback/src/main/java/com/iformall/controller/callback/TtWebController.java

@@ -80,7 +80,7 @@ public class TtWebController extends BaseController {
 
         if("verify_webhook".equals(event)){
             Map content = (Map) parameterMap.get("content");
-            String challenge = (String) content.get("challenge");
+            Object challenge = content.get("challenge");
             resultMap.put("challenge",challenge);
             return resultMap;
         }else if("life_goods_audit".equals(event)){