update

src/applet/app/controllers/CallBackController.php

@@ -34,14 +34,14 @@ class CallBackController extends \Phalcon\Mvc\Controller
         $this->logger($args, 'alipayCommonCallBack', true);
         if ($this->request->isPost()) {
             $args = $this->request->getJsonRawBody(true);
-            $this->logger($args, 'alipayCommonCallBack_post', true);
+            $this->logger($_POST, 'alipayCommonCallBack_post', true);
         }
       exit(json_encode(
           [
-              "alipay_commerce_educate_facefeature_groupkey_query_response" => [
+              "response" => [
                   "code" => "10000",
                   "msg" => "Success",
-                  "group_key" => "K12_2088323332233424",
+                  "face_group_key" => "K12_2088323332233424",
               ]]
       ));
     }