如何使用DotNetOpenAuth登录Facebook

本文关键字：Facebook 登录 DotNetOpenAuth 何使用 | 更新日期: 2023-09-27 18:27:25

var facebookClient = new FacebookClient
{
    ClientIdentifier = "appId",
    ClientSecret = "appSecret"
};
IAuthorizationState authorization = facebookClient.ProcessUserAuthorization();
if (authorization == null)
{
    // Kick off authorization request
    facebookClient.RequestUserAuthorization();
}
else
{
    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);
            lblFacebookUserName.Text = HttpUtility.HtmlEncode(graph.Name);
        }
    }
}

行 

IAuthorizationState authorization = facebookClient.ProcessUserAuthorization();

总是返回null

如何使用DotNetOpenAuth登录Facebook

我

不是专家，但不是因为你总是有一个新的Facebook客户端，从来没有请求过用户授权吗？ 你的工作流程对我来说似乎很奇怪...

这有什么区别吗：

var facebookClient = new FacebookClient
{
    ClientIdentifier = "appId",
    ClientSecret = "appSecret"
};
// Kick off authorization request, as have a new client that needs to be authorised
facebookClient.RequestUserAuthorization();
// get the result of the authorization
IAuthorizationState authorization = facebookClient.ProcessUserAuthorization();
if (authorization == null)
{
    //throw not authorized exception or whatever
}
else
{
    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);
            lblFacebookUserName.Text = HttpUtility.HtmlEncode(graph.Name);
        }
    }
}
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