我正在使用Facebook的Javascript SDK进行身份验证。我已经能够正确导入SDK并在我的页面上添加了一个Like按钮。但是，facebook登录按钮必须包含在标签中：
<fb:login-button/>
我目前将Facebook Login tutorial的所有代码都粘贴到我的index.html中，这是我项目中唯一包含React应用程序的html文件。但是，我需要将具有实际登录按钮的最后一部分放入我的React组件中。当我尝试这样做时，我收到以下错误：
ReactifyError: /Users/ritmatter/reps/js/components/Signup.jsx: Parse Error: Line 82: Unexpected end of input while parsing file: /Users/ritmatter/reps/js/components/Signup.jsx
sdk.js:61 The "fb-root" div has not been created, auto-creating
ping?client_id=894010190618709&domain=localhost&origin=1&redirect_uri=http%3A%2F%2Fstatic.ak.facebo…:1 Given URL is not allowed by the Application configuration.: One or more of the given URLs is not allowed by the App's settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App's domains.
如何让登录按钮做出反应？
我已经想出如何使用ReactJS修改Login API的Facebook教程。我希望这可以帮助其他人在努力解决这个问题。
首先，在您想要Login链接的react组件中，包含以下代码：
componentDidMount: function() {
window.fbAsyncInit = function() {
FB.init({
appId : '<YOUR_APP_ID>',
cookie : true, // enable cookies to allow the server to access
// the session
xfbml : true, // parse social plugins on this page
version : 'v2.1' // use version 2.1
});
// Now that we've initialized the JavaScript SDK, we call
// FB.getLoginStatus(). This function gets the state of the
// person visiting this page and can return one of three states to
// the callback you provide. They can be:
//
// 1. Logged into your app ('connected')
// 2. Logged into Facebook, but not your app ('not_authorized')
// 3. Not logged into Facebook and can't tell if they are logged into
// your app or not.
//
// These three cases are handled in the callback function.
FB.getLoginStatus(function(response) {
this.statusChangeCallback(response);
}.bind(this));
}.bind(this);
// Load the SDK asynchronously
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
},
// Here we run a very simple test of the Graph API after login is
// successful. See statusChangeCallback() for when this call is made.
testAPI: function() {
console.log('Welcome! Fetching your information.... ');
FB.api('/me', function(response) {
console.log('Successful login for: ' + response.name);
document.getElementById('status').innerHTML =
'Thanks for logging in, ' + response.name + '!';
});
},
// This is called with the results from from FB.getLoginStatus().
statusChangeCallback: function(response) {
console.log('statusChangeCallback');
console.log(response);
// The response object is returned with a status field that lets the
// app know the current login status of the person.
// Full docs on the response object can be found in the documentation
// for FB.getLoginStatus().
if (response.status === 'connected') {
// Logged into your app and Facebook.
this.testAPI();
} else if (response.status === 'not_authorized') {
// The person is logged into Facebook, but not your app.
document.getElementById('status').innerHTML = 'Please log ' +
'into this app.';
} else {
// The person is not logged into Facebook, so we're not sure if
// they are logged into this app or not.
document.getElementById('status').innerHTML = 'Please log ' +
'into Facebook.';
}
},
// This function is called when someone finishes with the Login
// Button. See the onlogin handler attached to it in the sample
// code below.
checkLoginState: function() {
FB.getLoginStatus(function(response) {
this.statusChangeCallback(response);
}.bind(this));
},
handleClick: function() {
FB.login(this.checkLoginState());
},
然后，在您的render方法中，确保您有一些将调用该handleClick的HTML：
<a href="#" onClick={this.handleClick}>Login</a>
请注意，这与教程中的代码相同，但放在ReactJS组件中。唯一的区别是你必须有策略地绑定它以使Facebook API函数成为你的反应组件的一部分。此登录将以FB.getLoginStatus（）给出的响应解析的响应消息结束。您还可以从该响应对象中取出令牌并将其发送到后端，以便使用passport-facebook-token之类的身份验证。
我最近在Facebook登录我的一个项目，所以经过许多Stackoverflow答案和博客文章。我使用ES6 FatArrow函数表达式编写了一个最小代码（不包括.bind（this））。希望这段代码可以帮到你。
https://gist.github.com/ronit-mukherjee/3e933509643a4ab4e80452bb05c1a073
/*global FB*/
import React, {
Component
} from 'react';
class FacebookLoginButton extends Component {
componentDidMount() {
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) {
return;
}
js = d.createElement(s);
js.id = id;
js.src = "https://connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
window.fbAsyncInit = () => {
FB.init({
appId: '9999999999999999', //Change with your Facebook app id
autoLogAppEvents: true,
xfbml: true,
version: 'v3.0'
});
FB.Event.subscribe('auth.statusChange', response => {
if (response.authResponse) {
this.checkLoginState();
} else {
console.log('[FacebookLoginButton] User cancelled login or did not fully authorize.');
}
});
};
}
checkLoginState() {
FB.getLoginStatus(function(response) {
this.statusChangeCallback(response);
}.bind(this));
}
login() {
FB.login(this.checkLoginState(), {
scope: 'email'
});
}
statusChangeCallback(response) {
if (response.status === 'connected') {
this.testAPI();
} else if (response.status === 'not_authorized') {
console.log("[FacebookLoginButton] Person is logged into Facebook but not your app");
} else {
console.log("[FacebookLoginButton] Person is not logged into Facebook");
}
}
testAPI() {
FB.api('/me', function(response) {
console.log('[FacebookLoginButton] Successful login for: ', response);
});
}
render() {
return ( <
button className = "btn btn-block btn-fb"
onClick = {
() => this.login()
} >
<
i className = "fa fa-facebook" / > Connect with Facebook <
/button>
)
}
}
export default FacebookLoginButton;我使用Promises for Facebook Auth flow
混入/ facebook.js
const promises = {
init: () => {
return new Promise((resolve, reject) => {
if (typeof FB !== 'undefined') {
resolve();
} else {
window.fbAsyncInit = () => {
FB.init({
appId : '<app_id>',
cookie : true,
xfbml : true,
version : 'v2.5'
});
resolve();
};
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
}
});
},
checkLoginState: () => {
return new Promise((resolve, reject) => {
FB.getLoginStatus((response) => {
response.status === 'connected' ? resolve(response) : reject(response);
});
});
},
login: () => {
return new Promise((resolve, reject) => {
FB.login((response) => {
response.status === 'connected' ? resolve(response) : reject(response);
});
});
},
logout: () => {
return new Promise((resolve, reject) => {
FB.logout((response) => {
response.authResponse ? resolve(response) : reject(response);
});
});
},
fetch: () => {
return new Promise((resolve, reject) => {
FB.api(
'/me',
{fields: 'first_name, last_name, gender'},
response => response.error ? reject(response) : resolve(response)
);
});
}
}
export const Facebook = {
doLogin() {
this.setState({
loading: true
}, () => {
promises.init()
.then(
promises.checkLoginState,
error => { throw error; }
)
.then(
response => { this.setState({status: response.status}); },
promises.login
)
.then(
promises.fetch,
error => { throw error; }
)
.then(
response => { this.setState({loading: false, data: response, status: 'connected'}); },
error => { throw error; }
)
.catch((error) => {
this.setState({loading: false, data: {}, status: 'unknown'});
console.warn(error);
});
});
},
doLogout() {
this.setState({
loading: true
}, () => {
promises.init()
.then(
promises.checkLoginState,
error => { throw error; }
)
.then(
promises.logout,
error => { this.setState({data: {}, status: 'unknown'}); }
)
.then(
response => { this.setState({loading: false, data: {}, status: 'unknown'}); },
error => { throw error; }
)
.catch(error => {
this.setState({loading: false, data: {}, status: 'unknown'});
console.warn(error);
});
});
},
checkStatus() {
this.setState({
loading: true
}, () => {
promises.init()
.then(
promises.checkLoginState,
error => { throw error; }
)
.then(
response => { this.setState({status: response.status}); },
error => { throw error; }
)
.then(
promises.fetchUser,
error => { throw error; }
)
.then(
response => { this.setState({loading: false, data: response, status: 'connected'}); },
error => { throw error; }
)
.catch((error) => {
this.setState({loading: false, data: {}, status: 'unknown'});
console.warn(error);
});
});
}
};
Profile.jsx
import {Facebook} from './mixins/Facebook.js';
import {Button} from 'react-bootstrap';
const ProfileHandler = React.createClass({
mixins: [Facebook],
componentDidMount() {
this.checkStatus();
},
getInitialState() {
return {
status: 'unknown',
loading: false,
data: {}
};
},
render() {
const loading = this.state.loading ? <p>Please wait, profile is loading ...</p> : null;
const message = this.state.status === 'connected'
? (<div>
Hi {data.name}!
<Button onClick={this.doLogout}>Logout</Button>
</div>)
: (<Button onClick={this.doLogin}>Login</Button>);
return (
<div>
{message}
{loading}
</div>
);
}
});
ritmatter给出了一个很好的答案，但我会展示我是如何做到这一点的。我想使用Facebook的登录按钮而不是我自己的按钮来触发检查登录状态的回调。登录按钮可能如下所示：
<div class="fb-login-button" onlogin="checkLoginState" data-size="medium" data-show-faces="false" data-auto-logout-link="false"></div>
该按钮具有onlogin属性，jsx解析器不支持该属性。以反应方式使用data-onlogin不起作用，所以我只是在componentDidMount中添加了按钮：
componentWillMount: function () {
window['statusChangeCallback'] = this.statusChangeCallback;
window['checkLoginState'] = this.checkLoginState;
},
componentDidMount: function () {
var s = '<div class="fb-login-button" ' +
'data-scope="public_profile,email" data-size="large" ' +
'data-show-faces="false" data-auto-logout-link="true" ' +
'onlogin="checkLoginState"></div>';
var div = document.getElementById('social-login-button-facebook')
div.innerHTML = s;
},
componentWillUnmount: function () {
delete window['statusChangeCallback'];
delete window['checkLoginState'];
},
statusChangeCallback: function(response) {
console.log(response);
},
// Callback for Facebook login button
checkLoginState: function() {
console.log('checking login state...');
FB.getLoginStatus(function(response) {
statusChangeCallback(response);
});
},
render: function() {
return (
<div id='social-login-button-facebook'>
</div>
);
}
如果您想自动调用checkLoginState，那么剩下要做的就是在安装组件时触发按钮。
我在这里发布了我的解决方案，因为答案帮助我实现了它，但是ritmatter接受的答案没有得到解决
FB.Event.subscribe('auth.statusChange', function(response)
RubyFanatic回答的陈述。此外，“onlogin”让我很困惑。在我眼里根本不需要它。
我想分享它，因为这是一个c＆p解决方案，这里我的完整代码反对fb api v2.8（react-bootstrap当然可以踢）：
/* global FB*/
import React, { Component } from 'react';
import { Grid, Row, Col } from 'react-bootstrap';
export default class Login extends Component {
constructor(props) {
super(props);
this.checkLoginState = this.checkLoginState.bind(this);
this.handleClick = this.handleClick.bind(this);
this.testAPI = this.testAPI.bind(this);
this.statusChangeCallback = this.statusChangeCallback.bind(this);
}
componentDidMount() {
window.fbAsyncInit = function() {
FB.init({
appId : 'YOURAPIKEYHERE',
cookie : true,
xfbml : true,
version : 'v2.8'
});
FB.AppEvents.logPageView();
FB.Event.subscribe('auth.statusChange', function(response) {
if (response.authResponse) {
this.checkLoginState();
} else {
console.log('---->User cancelled login or did not fully authorize.');
}
}.bind(this));
}.bind(this);
// Load the SDK asynchronously
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = '//connect.facebook.net/en_US/sdk.js';
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
}
// Here we run a very simple test of the Graph API after login is
// successful. See statusChangeCallback() for when this call is made.
testAPI() {
console.log('Welcome! Fetching your information.... ');
FB.api('/me', function(response) {
console.log('Successful login for: ' + response.name);
document.getElementById('status').innerHTML =
'Thanks for logging in, ' + response.name + '!';
});
}
// This is called with the results from from FB.getLoginStatus().
statusChangeCallback(response) {
if (response.status === 'connected') {
// Logged into your app and Facebook.
this.testAPI();
} else if (response.status === 'not_authorized') {
// The person is logged into Facebook, but not your app.
document.getElementById('status').innerHTML = 'Please log ' +
'into this app.';
} else {
// The person is not logged into Facebook, so we're not sure if
// they are logged into this app or not.
document.getElementById('status').innerHTML = 'Please log ' +
'into Facebook.';
}
}
checkLoginState() {
FB.getLoginStatus(function(response) {
this.statusChangeCallback(response);
}.bind(this));
}
handleClick() {
FB.login(this.checkLoginState());
}
render() {
return (
<main>
<Grid fluid>
<h1>
Facebook Login
</h1>
</Grid>
<Grid>
<Row>
<Col xs={12}>
<a href="#" onClick={this.handleClick} onlogin={this.checkLoginState}>Login</a>
<div id="status"></div>
</Col>
</Row>
</Grid>
</main>
);
}
}
这是我用来获取登录回调的解决方案。您可以在渲染方法中为Facebook登录按钮添加此代码：
<div className="fb-login-button" data-max-row="5"
data-size="large"
data-show-faces="false"
data-auto-logout-link="false"
href="javascript:void(0)">Login</div>
在您的代码中，添加以下行：
componentDidMount: function() {
// facebook signin button render
window.fbAsyncInit = function() {
FB.init({
appId : 'replace with your app id here',
cookie : true, // enable cookies to allow the server to access
// the session
xfbml : true, // parse social plugins on this page
version : 'v2.1' // use version 2.1
});
// login callback implementation goes inside the function() { ... } block
FB.Event.subscribe('auth.statusChange', function(response) {
// example implementation
if (response.authResponse) {
console.log('Welcome! Fetching your information.... ');
FB.api('/me', function(response) {
console.log('Good to see you, ' + response.name + '.');
});
} else {
console.log('User cancelled login or did not fully authorize.');
}
});
}.bind(this);
// Load the SDK asynchronously
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
}
}
在组件初始化期间调用FB.Event.subscribe（'auth.statusChange'，callback_function）非常重要，因为这基本上就是您的登录回调。在这里查看FB.Event文档。
找到下面最简单的代码：
import React, { Component } from 'react';
import './App.css';
import FacebookLogin from 'react-facebook-login';
import GoogleLogin from 'react-google-login';
class App extends Component {
render() {
const responseFacebook = (response) => {
console.log(response);
}
const responseGoogle = (response) => {
console.log(response);
}
return (
<div className="App">
<h1>LOGIN WITH FACEBOOK AND GOOGLE</h1>
<FacebookLogin
appId="" //APP ID NOT CREATED YET
fields="name,email,picture"
callback={responseFacebook}
/>
<br />
<br />
<GoogleLogin
clientId="" //CLIENTID NOT CREATED YET
buttonText="LOGIN WITH GOOGLE"
onSuccess={responseGoogle}
onFailure={responseGoogle}
/>
</div>
);
}
}
export default App;
我写了一个mixin类来解决这个问题。
尝试使用这个库：https://github.com/keppelen/react-facebook-login
工作非常简单：
import React from 'react';
import ReactDOM from 'react-dom';
import FacebookLogin from 'react-facebook-login';
const responseFacebook = (response) => {
console.log(response);
}
ReactDOM.render(
<FacebookLogin
appId="1088597931155576"
autoLoad={true}
callback={responseFacebook} />,
document.getElementById('demo')
);
如果您想使用FB中的按钮而不是您自己的按钮，这是迄今为止我能想到的最干净，最简单的方法。
要使用按钮，它就像这样简单。
<FbLoginBtn
width="250"
dataScope="public_profile,email"
onSuccess={callback}
onFailure={optionalCallback}
afterLogin={optionalCallback}
/>
此组件是完全独立的，并且高度可堆叠，因为它不依赖于任何外部依赖性，也不具有除呈现FB登录按钮之外的任何预定义行为。
import React, { Component } from 'react';
class FbLoginBtn extends Component {
constructor(props) {
super(props);
// post login behavior should be defined at a higher level
this.onSuccess = this.props.onSuccess || (() => {});
this.onFailure = this.props.onFailure || (() => {});
this.onSuccess = this.onSuccess.bind(this);
this.onFailure = this.onFailure.bind(this);
}
componentDidMount() {
// This is the meat of the component
// create a script tag, load FB SDK
// then after script is loaded, set related behavior
// If you have other components that rely on the FB SDK
// I recommend extracting this into its own module
let self = this;
let scriptTag = document.createElement('script');
scriptTag.type = 'text/javascript';
scriptTag.src = "http://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.4&appId=xxxxx";
scriptTag.addEventListener('load', function (e) {
self.FB = window.FB;
// I don't like exposing the SDK to global scope
window.FB = null;
// This subscribe the callback when login status change
// Full list of events is here
// https://developers.facebook.com/docs/reference/javascript/FB.Event.subscribe/v2.9
self.FB.Event.subscribe('auth.statusChange', self.onStatusChange.bind(self));
});
document.body.appendChild(scriptTag);
}
onStatusChange(response) {
if (response.status === 'connected') {
const { accessToken } = response.authResponse;
// I have a afterLogin optional callback
// which takes care of ads landing, invitation or any other custom behavior
this.onSuccess(accessToken, this.props.afterLogin);
} else {
this.onFailure();
}
}
render() {
return (
<div
className="fb-login-button"
data-width={this.props.width}
data-max-rows="1"
data-size="large"
data-button-type="login_with"
data-show-faces="false"
data-auto-logout-link="true"
data-use-continue-as="false"
data-scope={this.props.dataScope}
>
</div>
);
}
}
export default FbLoginBtn;