生成移动端浏览器支付宝授权跳转地址

JS

var merchantAppId = '你的商户APPID';
var redirectUri = encodeURIComponent('https://你的域名/api/alipay/callback');
var state = encodeURIComponent('你的业务参数');// 1. 真正的支付宝授权地址
var authUrl = 'https://openauth.alipay.com/oauth2/publicAppAuthorize.htm'+ '?app_id=' + merchantAppId+ '&scope=auth_base'+ '&redirect_uri=' + redirectUri+ '&state=' + state;// 2. 外层 scheme，注意这里 appId 固定是 20000067，不是你的商户 appid
var scheme = 'alipays://platformapi/startapp?appId=20000067&url=' + encodeURIComponent(authUrl);// 3. 外部浏览器兜底短链
var openUrl = 'https://ds.alipay.com/?scheme=' + encodeURIComponent(scheme);// 4. 跳转
location.href = openUrl;

PHP函数

function buildAlipayDsAuthUrl($redirectUri = '', $state = 'init')
{// 你的支付宝应用APPID（固定）$merchantAppId = '你的商户APPID';// 默认回调地址if ($redirectUri === '' || $redirectUri === null) {throw new \InvalidArgumentException("回调地址不能为空");}// 默认 stateif ($state === '' || $state === null) {$state = 'init';}// 内层真实授权地址：这里用 auth_base 即可拿 user_id$authUrl = 'https://openauth.alipay.com/oauth2/publicAppAuthorize.htm'. '?app_id=' . $merchantAppId. '&scope=auth_base'. '&redirect_uri=' . rawurlencode($redirectUri). '&state=' . rawurlencode($state);// 外层支付宝唤起协议，appId 固定 20000067$scheme = 'alipays://platformapi/startapp?appId=20000067&url=' . rawurlencode($authUrl);// 最终输出 https://ds.alipay.com/xxxxreturn 'https://ds.alipay.com/?scheme=' . rawurlencode($scheme);
}