'123'

@@ -72,7 +72,7 @@ class Client extends JssdkClient
     public function appConfig(string $prepayId): array
     public function appConfig(string $prepayId): array
     {
     {
         $params = [
         $params = [
-            'appId' => $this->app['config']->app_id,
+            'appid' => $this->app['config']->app_id,
             'partnerid' => $this->app['config']->mch_id,
             'partnerid' => $this->app['config']->mch_id,
             'prepayid' => $prepayId,
             'prepayid' => $prepayId,
             'noncestr' => uniqid(),
             'noncestr' => uniqid(),
@@ -107,7 +107,7 @@ class Client extends JssdkClient
         ];
         ];
 
 
         $signParams = [
         $signParams = [
-            'appid' => $params['appId'],
+            'appId' => $params['appId'],
             'url' => $this->getUrl(),
             'url' => $this->getUrl(),
             'timestamp' => $params['timeStamp'],
             'timestamp' => $params['timeStamp'],
             'noncestr' => $params['nonceStr'],
             'noncestr' => $params['nonceStr'],