无法从Facebook登录获取电子邮件

时间:2017-02-12 03:12:19

标签: facebook-login

我正在努力将Facebook登录到我的网站上。我不是一个非常强大的JavaScript编码器,但通常会找到我需要的代码,经过一些工作和反复试验,得到我需要的结果。

我的登录脚本正常工作,我唯一需要的东西(我想 - 记住javascript不是我的强项,所以也许你看到一些我不知道的瑕疵)是从登录中获取电子邮件地址呼叫。我添加了电子邮件'到范围并尝试从响应对象以及用户对象访问电子邮件。我知道电子邮件是有效的,因为我正在使用我的FB帐户进行测试,并且它已通过电子邮件验证,而非电话验证。但它出现了未定义。

您将在myfacebooklogin函数中看到我想要获取它的位置。

任何人都知道如何/为何无法访问该电子邮件? 此外,这段代码看起来很稳固吗? 最后,您将如何最好地处理会话/状态?在ASP(网站编码的内容 - 经典,而不是.NET)中,如果传统的人登录,我会使用会话对象。如果他们注销,我只是将会话变量设置为""。但是,这样,您只需验证每个页面并将其用作会话,还是使用FB登录创建ASP会话用那个?

以下是所有代码。唯一的其他部分在HTML正文中 - myfacebooklogin函数的一个按钮和一个写入的div(这是我发现的代码的一部分,所以我把它留在了里面)。

谢谢!

<script>

  // 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'));



  window.fbAsyncInit = function() {
  FB.init({
    appId      : 'myAppId',
    cookie     : true,  // enable cookies to allow the server to access 
                        // the session
    xfbml      : true,  // parse social plugins on this page
    version    : 'v2.8' // use graph api version 2.8
  });




  // 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.

  //second parameter of FB.getLoginStatus is "true" to force a roundtrip to FB.
  //if "true" not set, result will come from cache
  //set "true" only when needed to save performance (for example, on login page)

  FB.getLoginStatus(function(response) {
    statusChangeCallback(response);
  },true);
  };



  // This is called with the results from from FB.getLoginStatus().
  function statusChangeCallback(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.
      //testAPI();
alert('1');
    } 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.';
alert('2');

    } 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.';
alert('3');

    }
  }



function myFacebookLogin() {
  FB.login(function(response) {
    if (response.authResponse) {
     console.log('Welcome!  Fetching your information.... ');
     FB.api('/me', function(response) {
       console.log('Good to see you, ' + response.name + '.');
       alert(response.name);
       alert(response.id);
       //alert(response.mail);
     });


      // FB.api('/me', function(user) {
      //  console.log(user.name + ': ' + user.email);
      //  alert(user.email);
      // });


    } else {
     console.log('User cancelled login or did not fully authorize.');
    }
   }, {scope: 'public_profile, email', return_scopes: true});  //scope: 'publish_actions'


}

</script>

1 个答案:

答案 0 :(得分:2)

您需要传递网址"/me"中的字段,如:

FB.api('/me?fields=name,id,email', function(response) {