diff --git a/src/WeChat/WeChatPay/BarCode.php b/src/WeChat/WeChatPay/BarCode.php
index d1e03e1..da1ec12 100644
--- a/src/WeChat/WeChatPay/BarCode.php
+++ b/src/WeChat/WeChatPay/BarCode.php
@@ -4,6 +4,8 @@
 namespace EasySwoole\Pay\WeChat\WeChatPay;
 
 
+use EasySwoole\Pay\Exceptions\GatewayException;
+use EasySwoole\Pay\Exceptions\InvalidSignException;
 use EasySwoole\Pay\WeChat\RequestBean\Base;
 use EasySwoole\Pay\WeChat\ResponseBean\BarCode as MicroPayResponse;
 use EasySwoole\Pay\WeChat\Utility;
@@ -20,7 +22,25 @@ function pay(Base $bean)
             $bean->setNotifyUrl( $this->config->getNotifyUrl() );
         }
         $utility      = new Utility( $this->config );
-        $result       = $utility->requestApi( $this->requestPath(), $bean );
-        return new MicroPayResponse($result->getArrayCopy());
+
+        $result       = $utility->request( $this->requestPath(), $bean );
+        $result = is_array($result) ? $result : $utility->fromXML($result);
+        if ((isset($result['return_code']) && $result['return_code'] == 'SUCCESS') && isset($result['err_code']) && $result['result_code'] == 'FAIL') {
+            // 以下情况 可能已经支付成功了,所以需要返回给调用者
+            if (in_array($result['err_code'], ['BANKERROR', 'SYSTEMERROR', 'USERPAYING'])) {
+                // 这里为了兼容微信的一个BUG，用请求的sign_type代替响应值里的sign_type
+                if (!isset($result['sign_type']) && $bean->getSignType() != null) {
+                    $result['sign_type'] = $bean->getSignType();
+                }
+                if ($utility->generateSign($result) === $result['sign']) {
+                    $resultArray = new SplArray($result);
+                    return new MicroPayResponse($resultArray->getArrayCopy());
+                }
+                throw new InvalidSignException('sign is error');
+            }
+        }
+        if (!isset($result['return_code']) || $result['return_code'] != 'SUCCESS' || $result['result_code'] != 'SUCCESS') {
+            throw new GatewayException('Get Wechat API Error:' . ($result['return_msg'] ?? $result['retmsg']) . ($result['err_code_des'] ?? ''),$result,$result['return_code']);
+        }
     }
 }