facebook - 无法访问用户的电子邮件。获取 "Undefined"

Question

我有一个带有 Facebook 登录实现的网站。我的应用程序具有用户电子邮件的权限。即使用户使用 Facebook 登录我的应用程序，我也只能检索他/她的姓名或基本信息。不是电子邮件。所以，这是我从 Facebook 开发者网站上复制的代码:

 window.fbAsyncInit = function() {
FB.init({
appId      : 'xxxxxxxxxxxxxxx', // App ID
channelUrl : '//domain.org/channel.html', // Channel File
status     : true, // check login status
cookie     : true, // enable cookies to allow the server to access the session
xfbml      : true  // parse XFBML
});


FB.Event.subscribe('auth.authResponseChange', function(response) {

if (response.status === 'connected') {

  testAPI();
} else if (response.status === 'not_authorized') {

  FB.login();
} else {

  FB.login();
}
});
};

// Load the SDK asynchronously
(function(d){
var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
if (d.getElementById(id)) {return;}
js = d.createElement('script'); js.id = id; js.async = true;
js.src = "//connect.facebook.net/en_US/all.js";
ref.parentNode.insertBefore(js, ref);
}(document));


function testAPI() {
console.log('Welcome!  Fetching your information.... ');
FB.api('/me', function(response) {
  console.log('Good to see you, ' + response.email + '.');
});
}
</script>

Answer 1

您现在必须指定要获取的字段，这称为“声明字段”:

FB.api('/me', {fields: 'name,email'}, function(response) {
  console.log('Good to see you, ' + response.email + '.');
});

查看更新日志以获取更多信息:https://developers.facebook.com/docs/apps/changelog#v2_4