一、打开谷歌控制台：https://console.developers.google.com/apis
二、点击创建凭据，如下图，填写项目地址等
三、创建好客户端ID和秘钥后，填写对应的项目网址和登录页网址
四、修改OAuth同意屏幕网站首页地址和隐私政策网址
五、代码部分如下：
<script src="https://apis.google.com/js/api:client.js"></script>function google_login() {
var googleUser = {};
gapi.load('auth2', function(){
// Retrieve the singleton for the GoogleAuth library and set up the client.
auth2 = gapi.auth2.init({
client_id: '申请得到的客户端ID', //客户端ID
cookiepolicy: 'single_host_origin',
scope: 'profile' //可以请求除了默认的'profile' and 'email'之外的数据
});
attachSignin(document.getElementById('google_button')); //点击google登录的按钮
});
}
function attachSignin(element) {
auth2.attachClickHandler(element, {},
function(googleUser) {
var profile = auth2.currentUser.get().getBasicProfile();
console.log('ID: ' + profile.getId());
console.log('Full Name: ' + profile.getName());
console.log('Given Name: ' + profile.getGivenName());
console.log('Family Name: ' + profile.getFamilyName());
console.log('Image URL: ' + profile.getImageUrl());
console.log('Email: ' + profile.getEmail());
}, function(error) {
console.log(JSON.stringify(error, undefined, 2));
});
}