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app-mall/controllers/NoticeController.php

@@ -410,7 +410,7 @@ class NoticeController extends PublicController
             noticeUtil::push('收银台支付回调验证失败了，金额错误，请注意，orderSn:' . $orderSn, '15280215347');
             util::end();
         }
-        $transactionId = $postData['pay_order_no'] ?? 0;
+        $transactionId = $orderTradeInfo['trade_no'] ?? 0;
 
         if ($return == false) {
             noticeUtil::push('收银台支付回调验证失败了，请注意，orderSn:' . $orderSn, '15280215347');