public function run()
 {
     $post_str = file_get_contents("php://input", true);
     $post_obj = simplexml_load_string($post_str, 'SimpleXMLElement', LIBXML_NOCDATA);
     if (isset($post_obj->return_code)) {
         $result_code = $post_obj->result_code;
         $return_code = $post_obj->return_code;
         $out_trade_no = $post_obj->out_trade_no;
         $payOrder = PayMentORM::where('out_trade_no', '=', $out_trade_no)->first();
         if (!empty($payOrder)) {
             $payOrder->notify_time = date("Y-m-d H:i:s", time());
             $payOrder->result_code = $result_code;
             $payOrder->return_code = $return_code;
             $payOrder->save();
         }
         if ($result_code == "SUCCESS" || $return_code == "SUCCESS") {
             $payOrder->transaction_id = $post_obj->transaction_id;
             $payOrder->time_end = $post_obj->time_end;
             $payOrder->server_paid = 1;
             $payOrder->save();
             //更新订单
             $order = OrderORM::whereId($payOrder->order_id)->first();
             $order->pay_status = 1;
             $order->save();
         }
         echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
     } else {
         echo '<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[ERROR_MSG]]></return_msg></xml>';
     }
     exit;
 }