DotNetOpenAuth 和 Facebook

使用 DotNetOpenAuth 和 Facebook 实现社交登录功能

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csharp
using DotNetOpenAuth.OpenId.RelyingParty;
using DotNetOpenAuth.OpenId.Extensions.SimpleRegistration;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OpenId;
using DotNetOpenAuth.OAuth2;
public partial class FacebookCallback : System.Web.UI.Page
{
    private static readonly string FacebookAppId = "YOUR_FACEBOOK_APP_ID";
    private static readonly string FacebookAppSecret = "YOUR_FACEBOOK_APP_SECRET";
    private static readonly string RedirectUri = "http://localhost:1234/FacebookCallback.aspx";
    protected void Page_Load(object sender, EventArgs e)
    {
        var authorizationCode = Request.QueryString["code"];
        var client = new FacebookClient(FacebookAppId, FacebookAppSecret);
        var redirectUri = new Uri(RedirectUri);
        var redirectUriBuilder = new UriBuilder(redirectUri);
        redirectUriBuilder.Query = null;
        var tokenResponse = client.ProcessUserAuthorization(new HttpRequestWrapper(Request), redirectUriBuilder.Uri);
        var accessToken = tokenResponse.AccessToken;
        var graph = new FacebookGraph(accessToken);
        var user = graph.GetMe();
        // 获取用户信息并进行后续处理
    }
}