/**
* 建立支付请求表单
* @param string $method
* @param string $button_name
* @return 提交表单HTML文本
*/
public function createRequest($method = 'get', $button_name = '确认')
{
$alipay = new Submit($this->_config);
return $alipay->buildRequestForm($this->_parameter, $method, $button_name);
}
