在此处输入代码我一直在关注 C# 的 Facebook 教程并获取访问令牌,我刚刚得到它,但我似乎无法理解他们教程中关于事件处理和重定向的步骤。我从来没有使用 JavaScript 到 C# 做过类似的事情。我有以下内容:
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function () {
FB.init({
appId: '{app Id}', // App ID
status: true, // check login status
cookie: true, // enable cookies to allow the server to access the session
xfbml: true // parse XFBML
});
// Additional initialization code here
FB.Event.subscribe('auth.authResponseChange', 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;
// TODO: Handle the access token
// Do a post to the server to finish the logon
// This is a form post since we don't want to use AJAX
var form = document.createElement("form");
form.setAttribute("method", 'post');
form.setAttribute("action", '/FacebookLogin.ashx');
var field = document.createElement("input");
field.setAttribute("type", "hidden");
field.setAttribute("name", 'accessToken');
field.setAttribute("value", accessToken);
form.appendChild(field);
document.body.appendChild(form);
form.submit();
} else if (response.status === 'not_authorized') {
// the user is logged in to Facebook,
// but has not authenticated your app
} else {
// the user isn't logged in to Facebook.
}
});
};
// 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));
</script>
以及一个 Facebook 按钮,一切正常,但是根据教程在这里我需要“下一步,创建一个页面、操作或处理程序来接收令牌并重定向用户。对于这个例子,我们将创建一个通用处理程序。”
他们使用这个:
public class FacebookLogin : IHttpHandler, System.Web.SessionState.IRequiresSessionState {
public void ProcessRequest(HttpContext context) {
var accessToken = context.Request["accessToken"];
context.Session["AccessToken"] = accessToken;
context.Response.Redirect("/MyUrlHere");
}
public bool IsReusable {
get { return false; }
}
}
我只是把它放在我的代码后面,但它没有做任何事情。我只是不确定从这里做什么。如何让我的页面重定向到新页面,以便我可以执行以下操作:
var accessToken = Session["AccessToken"].ToString();
var client = new FacebookClient(accessToken);
dynamic result = client.Get("me", new { fields = "name,id" });
string name = result.name;
string id = result.id;