diff --git a/app/Controller/PaymentController.php b/app/Controller/PaymentController.php
index e0c850c..a411185 100644
--- a/app/Controller/PaymentController.php
+++ b/app/Controller/PaymentController.php
@@ -39,10 +39,42 @@ class PaymentController extends BaseController
             'openid' => $data['openid'],
         ]);
 
-        $result['sign_type'] = 'MD5';
-        $result['timestamp'] = time();
+        $parameters = [
+            'appId' => $result['appid'],
+            'timeStamp' => '' . time() . '',
+            'nonceStr' => uniqid(),
+            'package' => 'prepay_id=' . $result['prepay_id'],
+            'signType' => 'MD5'
+        ];
+
+        //签名步骤一：按字典序排序参数
+        ksort($parameters);
+        $string = $this->formatBizQueryParaMap($parameters, false);
+        //签名步骤二：在string后加入KEY
+        $string = $string . "&key=" . $config['key'];
+        //签名步骤三：MD5加密
+        $string = md5($string);
+        //签名步骤四：所有字符转为大写
+        $parameters['paySign'] = strtoupper($string);
+
+        return $this->success($parameters);
+    }
 
-        return $this->success($result);
+    ///作用：格式化参数，签名过程需要使用
+    private function formatBizQueryParaMap($paraMap, $urlencode) {
+        $buff = "";
+        ksort($paraMap);
+        foreach ($paraMap as $k => $v) {
+            if ($urlencode) {
+                $v = urlencode($v);
+            }
+            $buff .= $k . "=" . $v . "&";
+        }
+        $reqPar = null;
+        if (strlen($buff) > 0) {
+            $reqPar = substr($buff, 0, strlen($buff) - 1);
+        }
+        return $reqPar;
     }
 
     public function wxminiPayOffline(WxminiPayRequest $request){
diff --git a/app/Service/OrderService.php b/app/Service/OrderService.php
index de1c925..54468a9 100644
--- a/app/Service/OrderService.php
+++ b/app/Service/OrderService.php
@@ -92,7 +92,6 @@ class OrderService implements OrderServiceInterface
 
             $storeOrderCounts = [];
             foreach ($countsArr as $key => &$row) {
-                var_dump('row', $row);
                 $storeOrderCounts[$row['id']] = $row['count'];
             }
 
diff --git a/config/config.php b/config/config.php
index c67f910..7e8d490 100644
--- a/config/config.php
+++ b/config/config.php
@@ -32,7 +32,7 @@ return [
     'wxpay' => [
         'app_id' => env('APP_ID',''),
         'mch_id' => env('MCH_ID',''),
-        'key' => env('APP_SECRET',''),
+        'key' => env('MCH_KEY',''),
         'cert_path' => env('CERT_PATH',''),
         'key_path' => env('KEY_PATH',''),
         'notify_url' => env('NOTIFY_URL',''),