public function notify()
{
include_once LIB_PATH . "ORG/Wpay/WxPayPubHelper.php";
//存储微信的回调
$xml = $GLOBALS['HTTP_RAW_POST_DATA'];
Log::record('wxpay notify get:' . print_r($xml, true));
Log::save();
//使用通用通知接口
$notify = new Notify_pub();
$notify->saveData($xml);
$bak_params = $notify->getData();
try {
$sql = 'SELECT `pay_config`
FROM `' . C('DB_PREFIX') . 'b2c_wxtrade`
INNER JOIN `' . C('DB_PREFIX') . 'b2c_payment` ON (`' . C('DB_PREFIX') . 'b2c_wxtrade`.`token` = `' . C('DB_PREFIX') . 'b2c_payment`.`token` AND `pay_code` = \'wxpay\' AND `enabled` = 1)
WHERE `order_sn` = \'' . $bak_params['out_trade_no'] . '\' AND `wecha_id` = \'' . $bak_params['openid'] . '\'';
$model = new Model();
$payment = $model->query($sql);
$wxpay_config = unserialize($payment[0]['pay_config']);
$notify->setAppkey($wxpay_config['APPKEY']);
} catch (Exception $e) {
Log::record('get wxpay configuration params error:' . print_r($e, true));
Log::save();
exit;
}
//验证签名，并回应微信。
//对后台通知交互时，如果微信收到商户的应答不是成功或超时，微信认为通知失败，
//微信会通过一定的策略（如30分钟共8次）定期重新发起通知，
//尽可能提高通知的成功率，但微信不保证通知最终能成功。
if ($notify->checkSign() == FALSE) {
$notify->setReturnParameter("return_code", "FAIL");
//返回状态码
$notify->setReturnParameter("return_msg", "签名失败");
//返回信息
} else {
$notify->setReturnParameter("return_code", "SUCCESS");
//设置返回码
}
$returnXml = $notify->returnXml();
Log::record('wxpay notify get:' . print_r($returnXml, true));
Log::save();
//==商户根据实际情况设置相应的处理流程，此处仅作举例=======
if ($notify->checkSign() == TRUE) {
if ($notify->data["return_code"] == "FAIL") {
//此处应该更新一下订单状态，商户自行增删操作
Log::record('【通信出错】:\\n' . $xml . '\\n');
Log::save();
echo 'fail';
exit;
} elseif ($notify->data["result_code"] == "FAIL") {
//此处应该更新一下订单状态，商户自行增删操作
Log::record('【通信出错】:\\n' . $xml . '\\n');
Log::save();
echo 'fail';
exit;
} else {
$this->change_order($bak_params);
Log::record('【支付成功】:\\n' . $xml . '\\n');
Log::save();
}
}
}