diff --git a/src/applet/app/controllers/AliCallBackController.php b/src/applet/app/controllers/AliCallBackController.php
index 867c57b..f3c52d2 100644
--- a/src/applet/app/controllers/AliCallBackController.php
+++ b/src/applet/app/controllers/AliCallBackController.php
@@ -47,7 +47,6 @@ class AliCallBackController extends \Phalcon\Mvc\Controller
     {
         $params = $this->request->get();
         $this->logger($params, 'aliEcoCommonCallBack', true);
-
         //获取支付宝行业云公钥
         $alipayrsaPublicKey = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuWFuSpwY/2llLhy5Hxkqcc0qQFQOvemkYOI4S43L4qArX4x+DQN1RFuvfGuwOLScBKaoDYHsu9PSoTtcIj4obhhexbWHfelcsouV7Pj4YChrOkOLHAMLDQhGRXaZyXQAJdk2DoBkJ0vBDD/b1gZT8QznPopvuT4Y0rx/a2vK+5B/XV0wUuP2PnpWoPxNSwr7neFWvUdkC7yJJg4zJ1INLYy9TgHH3LKYrsEDbQzPJyMPFhD0zDb36b62q3tQYc1w8JknS6XeXMkX1Tu4zZbAxyIiv3J1FK8y7dtoRi9gLgo0uLsXWDn5AwAlzqfOERgLMWD2r6FE8tOXVbMha6IImQIDAQAB';
         //支付宝提供的密钥
@@ -58,7 +57,7 @@ class AliCallBackController extends \Phalcon\Mvc\Controller
         $response = [];
         switch ($params["service"] ?? "") {
             case "alipay.planet.ecocampus.spi.school.queryFaceGroupKey":
-                $biz_content = json_encode($params["biz_content"], true);
+                $biz_content = json_decode($params["biz_content"], true);
                 //SPI::获取学校人脸库id
                 $selfSupportForSchoolInfo = SelfSupportForSchoolInfo::findFirst("school_code = '{$biz_content["schoolCode"]}'");
                 if (empty($selfSupportForSchoolInfo)) {