Question

我正在asp.net中创建一个应用程序，该应用程序将使用其api的用户的facebook数据，但是为了访问Fb api，我们需要首先执行OAuth（2.0）。我也是通过使用以下代码中的DotNetOpenAuth库来实现的：

private static readonly FacebookClient client = new FacebookClient
    {
        ClientIdentifier = ConfigurationManager.AppSettings["fbAppID"],
        ClientCredentialApplicator = ClientCredentialApplicator.PostParameter(ConfigurationManager.AppSettings["fbSecret"]),
    };

    protected void Page_Load(object sender, EventArgs e)
    {
        IAuthorizationState authorization = client.ProcessUserAuthorization();
        if (authorization == null)
        {
            // Kick off authorization request
            client.RequestUserAuthorization();                
        }
        else
        {
            var req = WebRequest.Create("https://graph.facebook.com/oauth/access_token?client_id=" + ConfigurationManager.AppSettings["facebookAppID"] + "&client_secret=" + ConfigurationManager.AppSettings["facebookAppSecret"] + "&grant_type=fb_exchange_token&fb_exchange_token=" + Uri.EscapeDataString(authorization.AccessToken));


            var request = WebRequest.Create("https://graph.facebook.com/me?access_token=" + Uri.EscapeDataString(authorization.AccessToken));
            using (var response = request.GetResponse())
            {
                using (var responseStream = response.GetResponseStream())
                {
                    var graph = FacebookGraph.Deserialize(responseStream);
                    this.nameLabel.Text = HttpUtility.HtmlEncode(graph.Name);
                }
            }
        }
    }

我的问题是，如何使用DotNetOpenAuth库获取facebook的长期访问令牌，以便用户不需要一次又一次地登录，我可以将其存储在某个地方。请帮帮我。

Answer 1

如果可能，请使用Facebook SDK for .Net长时间创建访问令牌。可能是60天。

使用Facebook;

var cl = new FacebookClient（short_lived_access_token）;

            dynamic result = client.Post("oauth/access_token", new
            {
                client_id = "your app id",
                client_secret = "your app secret",
                grant_type = "fb_exchange_token",
                fb_exchange_token = client.AccessToken
            });

var long_lived_access_token = result.access_token;

facebook使用DotNetOpenAuth进行长期访问

1 个答案: