ali pay notify bug fix

app/Libs/Pay/Merchants/AliPay.php

@@ -79,7 +79,7 @@ class AliPay implements PayMerchantInterface
 
     public function notify(array $data)
     {
-        if (isset($data['sign'])) {
+        if (isset($data['sign']) && isset($data['trade_status'])  && $data['trade_status'] == 'TRADE_SUCCESS') {
             return $this->aop->rsaCheckV1($data, $this->rsaPublicKeyFilePath, self::SIGN_TYPE);
         } else {
             return false;