tp框架集成支付宝，中转页变成gbk编码

tp框架中集成支付宝的功能，将支付宝的demo例子存在到下图位置\Extend\Vendor\Alipay

生成支付订单

   /**
    * 支付订单
    */
    public function pay() {
        header("Content-Type:text/html; charset=utf-8");
        $id = I('post.oid','', 'htmlspecialchars');
        $DAO = M('order');
        $order = $DAO->where("id=".$id)->find();
        $error = "";
        if(!isset($order)){
            $error = "订单不存在";
        }else if($order['PaymentStatus'] == 1){
            $error = "此订单已经完成，无需再次支付！";
        } else if($order['PaymentStatus'] == 2){
            $error = "此订单已经取消，无法支付，请重新下单！";
        }
        if($error != ""){
            $this->_FAIL("系统错误",$error,$this->getErrorLinks());
            return ;
        }
        $payType = I('post.payType','', 'htmlspecialchars');
        #支付宝
        if($payType == 'alipay'){
            $this->payWithAlipay($order);
        }
    }

　　支付订单提交

/**
      * 以支付宝形式支付
      * @param unknown_type $order
      */
    private function payWithAlipay($order){

        //引入支付宝相关的文件
        require_once(VENDOR_PATH."Alipay/alipay.config.php");
        require_once(VENDOR_PATH."Alipay/lib/alipay_submit.class.php");

        //支付类型
        $payment_type = "1";
        //必填，不能修改
        //服务器异步通知页面路径
        $notify_url = C("HOST")."index.php/Alipay/notifyOnAlipay";
        //页面跳转同步通知页面路径
        $return_url = C("HOST")."index.php/Pay/ok";
        //卖家支付宝帐户
        $seller_email = $alipay_config['seller_email'];
        //必填
        //商户订单号, 从订单对象中获取
        $out_trade_no = $order['OrderNum'];
        //商户网站订单系统中唯一订单号，必填
        //订单名称

        $subject = "物流服务";
        //必填
        //付款金额
        #正常金额
        $price = $order['Price'];
        #测试金额
        #$price = 0.1;

        //必填
        $body = $subject;
        //商品展示地址
        $show_url = C('HOST');

        //构造要请求的参数数组，无需改动
        $parameter = array(
            "service" => "create_direct_pay_by_user",
            "partner" => trim($alipay_config['partner']),
            "payment_type"  => $payment_type,
            "notify_url"    => $notify_url,
            "return_url"    => $return_url,
            "seller_email"  => $seller_email,
            "out_trade_no"  => $out_trade_no,
            "subject"   => $subject,
            "total_fee" => $price,
            "body"  => $body,
            "show_url"  => $show_url,
            "_input_charset"    => trim(strtolower($alipay_config['input_charset']))
        );
        Log::write('支付宝订单参数：'.var_export($parameter,true),Log::DEBUG);
        //建立请求
        $alipaySubmit = new AlipaySubmit($alipay_config);
        $html_text = $alipaySubmit->buildRequestForm($parameter,"get", "去支付");
        echo $html_text;
    }

　　支付宝回调接口

<?php
/**
* 支付宝回调接口
*/
class AlipayAction extends Action {

    /**
      * 支付宝异步通知
      */
    public function notifyOnAlipay(){
        Log::write("notify: ".print_r($_REQUEST, true),Log::DEBUG);
        require_once(VENDOR_PATH."Alipay/alipay.config.php");
        require_once(VENDOR_PATH."Alipay/lib/alipay_notify.class.php");
        $orderLogDao = M('orderlog');
         //计算得出通知验证结果
        $alipayNotify = new AlipayNotify($alipay_config);
        $verify_result = $alipayNotify->verifyNotify();
        Log::write('verify_result：'.var_export($verify_result,true),Log::DEBUG);
        if($verify_result) {//验证成功
            //商户订单号
            $out_trade_no = $_POST['out_trade_no'];
            //支付宝交易号
            $trade_no = $_POST['trade_no'];
            //根据订单号获取订单
            $DAO = M('order');
            $order = $DAO->where("OrderNum='".$out_trade_no."'")->find();
            //如果订单不存在，设置为0
            if(!isset($order)){
                $orderId = 0;
            }
            else{
                $orderId = $order['id'];
            }
            //交易状态
            $trade_status = $_POST['trade_status'];
            $log = "notify from Alipay, trade_status=".$trade_status." alipay sign=".$_POST['sign'].' price ='.$_POST['total_fee'] ;
            $orderLog['o_id'] = $orderId;
            if($_POST['trade_status'] == 'TRADE_FINISHED' || $_POST['trade_status'] == 'TRADE_SUCCESS') {
                #修改订单状态
                if ((float)$order['Price'] != (float)$_POST['total_fee']) {
                    $data['PaymentStatus'] = '2';
                } else {
                    $data['PaymentStatus'] = '1';
                }
                $DAO ->where('id='.$orderId)->save($data);
            }
               $orderLog['pay_id']  = $trade_no;
               $orderLog['pay_log'] = $log;
               $orderLog['pay_type'] = 'alipay';
               $orderLog['pay_result'] = 'success';

               $orderLogDao->add($orderLog);
            /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
            echo "success"; //返回成功标记给支付宝
        }
        else {
        //验证不通过时，也记录下来
            $orderLog['pay_log'] = "notify from Alipay, 但是验证不通过，sign=".$_POST['sign'];
            $orderLog['o_id'] = -1;
            $orderLog['pay_type'] = 'alipay';
               $orderLog['pay_result'] = 'fail';
            $orderLogDao->add($orderLog);

           //验证失败
           echo "fail";
        }
    }
}
?>

今天在tp框架中集成支付宝功能，跳转支付宝的时候出现乱码错误。

需要设定header("Content-Type:text/html; charset=utf-8");

如果还有乱码查看日志信息 是否出现

NOTIC: [2] Cannot modify header information - headers already sent by (output started at

　　上面错误，删除错误文件开始的空格