官方文档
https://developers.google.com/recaptcha/intro
管理后台
https://www.google.com/recaptcha/admin/site/350006937
填写资料
https://www.google.com/recaptcha/admin/create
前端
官方的demo
<script src="https://www.google.com/recaptcha/api.js?render=_reCAPTCHA_site_key"></script> <script> grecaptcha.ready(function() { grecaptcha.execute('_reCAPTCHA_site_key_', {action: 'homepage'}).then(function(token) {}); });</script>
_reCAPTCHA_site_key_ 就是客户的的密钥
核心代码就是通过执行 grecaptcha.execute(...) 方法，在回调中获取到 token值。
action 参数 可以理解为 验证场景。可以自己定义名称。作用就是可以在后台，对于不同的场景进行特别的设置。例如专门为登录设计一个场景： login
国内的用户需要替换js文件的地址和服务端验证接口的地址（Fuck GFW）
替换客户端js地址
https://www.google.com/recaptcha/api.js 替换为
https://www.recaptcha.net/recaptcha/api.js
替换服务端接口地址
https://www.google.com/recaptcha/api/siteverify 替换为 https://www.recaptcha.net/recaptcha/api/siteverify
完整的一个例子客户端
<!DOCTYPE html>
<html>
<head>
<title>google验证码V2</title>
<meta charset="UTF-8">
</head>
<body>
<div id="google-reCaptcha"></div>
<button>验证后提交</button>
</body>
<script src="https://www.recaptcha.net/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer> </script>
<script type="text/javascript">
var verifyCallback = function(token) {
document.querySelector('button').addEventListener('click', () => {
console.log('客户端token:' + token);
fetch('/validate?token=' + token, {
method: 'GET'
}).then(response => {
if (response.ok){
response.json().then(message => {
console.log('服务端验证');
console.log(message);
alert(message);
});
}
});
});
};
var onloadCallback = function() {
grecaptcha.render('google-reCaptcha', {
'sitekey' : '6LdctdwUAAAAAORpZqPoqPta7PUKjU4Wl24JIGRs',
'callback' : verifyCallback,
'theme' : 'light'
});
};
</script>
</html>
或者
<div id="robotLogin"></div>
onloadCallback("robotLogin",function(res) {if (res) {let params = {email: _that.formInline.email,password: _that.setSha(_that.formInline.password),personType: "GOOGLE",personCode: res,domainCode: "APIFINY",deviceType: "WEB",language: "EN"};_that.loginFunc(params);}},function(err) {_that.robotModalflag = false;_that.loaded = true;},function(netError) {_that.robotModalflag = false;_that.loaded = true;});
前后端集成：
https://www.cnblogs.com/echolun/p/12436226.html