public function __construct()
{
parent::__construct();
$this->platform = 'alipay_express';
$this->gatewayName = 'Alipay_MobileExpress';
$this->gateway = Omnipay::create($this->gatewayName);
}
public function __construct($body = null)
{
parent::__construct($body);
$this->platform = 'alipay_wap_express';
$this->gatewayName = 'Alipay_WapExpress';
$this->gateway = Omnipay::create($this->gatewayName);
}