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我是使用Facebook應用程序環境的新手。我正在開發一個小應用程序。我試圖在我的項目中使用一些社交數據來檢查一些條件。 我不知道我是否以正確的方式訪問FB返回的JSON對象，但這是我的問題。訪問JSON的對象值，將它們發送到另一個servlet或jsp
我想從當前文件發送firstname到另一個jsp或servlet。所以，我創建了jsp變量，並嘗試在從Facebook獲取的響應對象中分配「name」的值。
當試圖在jsp文件的末尾打印firstname時，firstname輸出爲空。如何在對象中使用名稱和性別值並將其發送到另一個jsp文件或servlet文件？
幫我找頭解決方案。有人請幫忙！
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Facebook authentication usage</title>
</head>
<body>
<%! String firstname="";
String lastname="";
String middlename="lynne";
%>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
// init the FB JS SDK
FB.init({
appId : '532238706811106', // App ID from the App Dashboard
//channelUrl : '//WWW.YOUR_DOMAIN.COM/channel.html', // Channel File for x-domain communication
status : true, // check the login status upon init?
cookie : true, // set sessions cookies to allow your server to access the session?
frictionlessRequests : true,
xfbml : true // parse XFBML tags on this page?
});
// Additional initialization code such as adding Event Listeners goes here
FB.getLoginStatus(function(response) {
if (response.status === 'connected')
{
// the user is logged in and has authenticated your
// app, and response.authResponse supplies
// the user's ID, a valid access token, a signed
// request, and the time the access token
// and signed request each expire
var uid = response.authResponse.userID;
var accessToken = response.authResponse.accessToken;
FB.api('/me', function(response)
{
console.log(response);
console.log('Good to see you, ' + response.name + '.');
firstname=firstname+response.name;
lastname=lastname+response.last_name;
document.write(response.name+middlename);
});
}
else if (response.status === 'not_authorized')
{
// the user is logged in to Facebook,
// but has not authenticated your app
var oauth_url = 'https://www.facebook.com/dialog/oauth/';
oauth_url += '?client_id=532238706811106'; //Your Client ID
oauth_url += '&redirect_uri=' + 'https://apps.facebook.com/newjsp'; //Send them here if they're not logged in
//oauth_url += '&scope=user_about_me,email,user_location,user_photos,publish_actions,user_birthday,user_likes';
window.top.location = oauth_url;
}
else
{
// the user isn't logged in to Facebook.
window.top.location ='https://www.facebook.com/index.php';
}
});
};
// Load the SDK's source Asynchronously
// Note that the debug version is being actively developed and might
// contain some type checks that are overly strict.
// Please report such bugs using the bugs tool.
(function(d, debug)
{
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" + (debug ? "/debug" : "") + ".js";
ref.parentNode.insertBefore(js, ref);
}(document, /*debug*/ false));
</script>
<h1>this is a sample to test facebook authentication
Welcome <%=firstname+""+lastname+middlename%></h1>
<%out.print(firstname+""+lastname+""+middlename); %>
</body>
</html>