支付寶的demo：https://docs.open.alipay.com/270/106291/
一般是在notify_url 異步通知 里寫業(yè)務(wù)代碼船惨。return_url只做付款成功后展示頁厅各。

要點

notify_url 要能直接訪問到，不能有登錄密碼之類
寫完后發(fā)現(xiàn)成功返回return_url，卻進入不了notify_url的post庇楞，原來是外部無法訪問钦无，果斷禁用登錄訪問

public $enableCsrfValidation = false;  //關(guān)閉csrf驗證，允許表單多次提交
public $layout=false;  //禁用框架祠汇，包括不登錄無法訪問功能

controller

    public function actionServermoney1()
    {
        $thirdid = Yii::$app->user->identity->thirdid;
            $money = 0.01;
            $randstr = RechargeController::getrandstr();
            $out_trade_no = 'servermoney' . $randstr . '-' . time();

            $models = new IbdThirdServicemoney();
            $models->money = $money*100;
            $models->time = time();
            $models->thirdid = $thirdid;
            $models->status = 0;
            $models->tradeno = $out_trade_no;
            $models->save();
            //構(gòu)造參數(shù)
            $payRequestBuilder = new  \AlipayTradePagePayContentBuilder();

            $payRequestBuilder->setSubject('開通服務(wù)費');
            $payRequestBuilder->setTotalAmount($money);

            $payRequestBuilder->setOutTradeNo($out_trade_no);
            $config=Yii::$app->params['config2'];
            $aop = new \AlipayTradeService($config);
            /**
             * pagePay 電腦網(wǎng)站支付請求
             * @param $builder 業(yè)務(wù)參數(shù)仍秤，使用buildmodel中的對象生成。
             * @param $return_url 同步跳轉(zhuǎn)地址座哩，公網(wǎng)可以訪問
             * @param $notify_url 異步通知地址徒扶，公網(wǎng)可以訪問
             * @return $response 支付寶返回的信息
             */
            $response = $aop->pagePay($payRequestBuilder, $config['return_url'], $config['notify_url']);
            $json["status"] = 1;
            $json["data"] = $response;
            var_dump($response);
            die;
    }

params

'config2'=>[
        'app_id' => "支付寶app_id",
        'merchant_private_key' => "key1",
        'notify_url' => "網(wǎng)站地址/third/notice/alinotify",
        'return_url' => "網(wǎng)站地址/third/recharge/alireturn",
        'charset' => "UTF-8",
        'sign_type'=>"RSA2",
        'gatewayUrl' => "https://openapi.alipay.com/gateway.do",
        'alipay_public_key' => "key2",
    ],

NoticeController

<?php
namespace third\controllers;


use common\models\GIm;
use Yii;
use \yii\filters\AccessControl;
use \yii\web\Controller;

require_once dirname(dirname(__DIR__)) . '/vendor/alipay/pagepay/buildermodel/AlipayTradePagePayContentBuilder.php';
require_once dirname(dirname(__DIR__)) . '/vendor/alipay/pagepay/service/AlipayTradeService.php';
class NoticeController extends Controller{
    public $enableCsrfValidation = false;
    public $layout=false; //重寫這個屬性就可以了   [yii2]不加載layout布局文件的實現(xiàn)方法
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'rules' => [
                    [
                        'actions' => ['login', 'error','view','alinotify'],
                        'allow' => true,
                    ],
                    [
                        'actions' => ['view','alinotify'],
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
        ];
    }
    /**
     * @inheritdoc
     */
    public function actions()
    {
        return [
            'error' => [
                'class' => 'yii\web\ErrorAction',
            ],
        ];
    }
    public  function actionAlinotify(){
        //獲取回調(diào)參數(shù)，這里是以post傳值
        $data=Yii::$app->request->post();
        //獲取配置參數(shù)
        $config=Yii::$app->params['config2'];
        //實例化service對象
        $serviceobj= new \AlipayTradeService($config);
        //驗證數(shù)據(jù)是否為支付寶返回
        $result=$serviceobj->check($data);
        if($result){
            //成功
            if($data['trade_status']=="TRADE_SUCCESS"){
//業(yè)務(wù)代碼
    
            }
        }else{
            echo "fail";
        }
    }
}