1、uniapp: app.vue

在onLaunch 中：

            // #ifdef H5
            if(!uni.getStorageSync('token')){
                if (/AlipayClient/.test(window.navigator.userAgent)) {
                    var alipay = new Alipay();
                    let token = await alipay.login();
                    this.setTokenAndBack(token);
                }
            }
            // #endif

2、新建：apipay.js

export default class Alipay {

	async login() {
		let token = '';
		if (router.$Route.path.indexOf('public/login') == -1) {
			uni.setStorageSync('fromLogin', router.$Route);
		}
		
		// #ifdef H5
		if (/AlipayClient/.test(window.navigator.userAgent)) {
			this.alipayOfficialAccountLogin();
		}
		// #endif
		
	}
	
	// #ifdef H5
	alipayOfficialAccountLogin() {
		let oUrl = window.location.href;
		/* window.location = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' 
			+ store.state.init.initData.wechat.appid +
			`&redirect_uri=${API_URL}user/wxOfficialAccountLogin&response_type=code&scope=snsapi_userinfo&state=` +
			oUrl; */
		
		window.location = 'https://openauth.alipay.com/oauth2/publicAppAuthorize.htm?app_id='
			+ '202***********48' + '&scope=auth_user&redirect_uri='
			+ `${API_URL}user/alipayLogin&state=`
			+ oUrl;
		
		throw 'stop';
	}
	// #endif





}

3、新建：JbAlipay.php

在上面步骤中的redirect_uri指定的方法中，调用JbAlipay中的方法：

public function alipayLogin()
    {
        $param = $this->request->param();
        $data = file_get_contents('php://input');
        
        $param = empty($param) ? [] : $param;
//         $param['alipayLogin'] = "alipayLogin---------------------";
        /* [ log ] array (
            'app_id' => '20210*******048',
            'source' => 'alipay_wallet',
            'scope' => 'auth_userinfo',
            'state' => 'ini',
            'auth_code' => '10fb62fe9****71a0f75b1fXC95',
            'addon' => '*****',
            'controller' => 'user',
            'action' => 'alipayLogin',
            'alipayLogin' => 'alipayLogin---------------------',
        )
         */
        if(isset($param['auth_code'])){//auth_code换取access_token与user_id
        
            $result = JbAlipay::do_auth_code($param['auth_code']);
            
            if($result['code'] == 10000){ //成功获取
                // 解析来源页面
                
                /* [avatar] => https://tfs.alipayobjects.com/images/partner/TB1R*******XXa.SXXa
                 [city] => 南宁市
                 [gender] => m
                 [nick_name] => 阿**昭
                 [province] => 广西壮族自治区
                 [user_id] => 20887******710 */
                /* 
                
                if (1==1) {
                    // 登录页接参Token
                    header('Location:' . $procotol . $host . '/pages/public/login?token=' . $ret->getToken());
                    exit();
                }
            }else{
                $this->error("支付宝授权：" . $result['code'] . " " .$result['msg']);
            }
            
        }
        
        $this->error("支付宝授权：auth_code 异常");
        
    }

<?php
namespace aop\jb;

require_once EXTEND_PATH . 'aop/AopCertClient.php';
require_once EXTEND_PATH . 'aop/SignData.php';
require_once EXTEND_PATH . 'aop/request/AlipaySystemOauthTokenRequest.php';
require_once EXTEND_PATH . 'aop/request/AlipayUserInfoShareRequest.php';

class JbAlipay
{
    public static function do_auth_code($code){

        $aop = new \AopCertClient();
        $appCertPath = "应用证书路径（要确保证书文件可读），例如：/home/admin/cert/appCertPublicKey.crt";
        $appCertPath = EXTEND_PATH . 'aop/jb/appCertPublicKey_2021*******048.crt';
        $alipayCertPath = "支付宝公钥证书路径（要确保证书文件可读），例如：/home/admin/cert/alipayCertPublicKey_RSA2.crt";
        $alipayCertPath = EXTEND_PATH . 'aop/jb/alipayCertPublicKey_RSA2.crt';
        $rootCertPath = "支付宝根证书路径（要确保证书文件可读），例如：/home/admin/cert/alipayRootCert.crt";
        $rootCertPath = EXTEND_PATH . 'aop/jb/alipayRootCert.crt';
        
        $aop->gatewayUrl = "https://openapi.alipay.com/gateway.do";
        $aop->appId = "20210*****4048";
        $aop->rsaPrivateKey = 'MIIEpAIBAAKCAQEAqphyjx1An1*******/WQA8eC**YRKSwAVfg==' ;
        $aop->format = "json";
        $aop->signType= "RSA2";
        
        //调用getPublicKey从支付宝公钥证书中提取公钥
        $aop->alipayrsaPublicKey = $aop->getPublicKey($alipayCertPath);
        //是否校验自动下载的支付宝公钥证书，如果开启校验要保证支付宝根证书在有效期内
        $aop->isCheckAlipayPublicCert = true;
        //调用getCertSN获取证书序列号
        $aop->appCertSN = $aop->getCertSN($appCertPath);
        //调用getRootCertSN获取支付宝根证书序列号
        $aop->alipayRootCertSN = $aop->getRootCertSN($rootCertPath);
        
        
        $request = new \AlipaySystemOauthTokenRequest();
        $request->setCode($code);
        $request->setGrantType("authorization_code");
        
        $response = $aop->execute($request);
        $responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";
        
        $access_token = $response->$responseNode->access_token;
        $user_id = $response->$responseNode->user_id;
        if($access_token){        //AlipayUserInfoShareRequest
            // alipay.user.info.share
            $userRequest = new \AlipayUserInfoShareRequest();
            $info = $aop->execute($userRequest, $access_token); //这里传入获取的access_token
            $responseNodeName = str_replace(".", "_", $userRequest->getApiMethodName()) . "_response";
            //用户信息
            $userInfo = $info->$responseNodeName;
            /* [avatar] => https://tfs.alipayobjects.com/images/partner/TB1RMb******XXa.SXXa
            [city] => 南宁市
            [gender] => m
            [nick_name] => 阿**昭
            [province] => 广西壮族自治区
            [user_id] => 20887******57710 */ 
            
            return json_decode( json_encode( $userInfo),true);
        }
        
        
        return ['code'=> 9999999, "msg"=>"JB未知异常"];
    }
}

sdk下载：https://github.com/alipay/alipay-sdk-php-all