asp.net-mvc – 如何使用ASP.NET MVC 5和OWIN获取Facebook的第一个和最后一个值？

解决方法@H_673_4@

在您的Startup.Auth.cs ConfigureAuth(IAppBuilder app)方法中，为Facebook设置以下内容：

var x = new FacebookAuthenticationOptions();
        x.Scope.Add("email");
        x.AppId = "*";
        x.AppSecret = "**";
        x.Provider = new FacebookAuthenticationProvider()
        {
            OnAuthenticated = async context =>
                {
                    context.Identity.AddClaim(new System.Security.Claims.Claim("FacebookAccessToken",context.AccessToken));
                    foreach (var claim in context.User)
                    {
                        var claimType = String.Format("urn:facebook:{0}",claim.Key);
                        String claimValue = claim.Value.ToString();
                        if (!context.Identity.HasClaim(claimType,claimvalue))
                            context.Identity.AddClaim(new System.Security.Claims.Claim(claimType,claimValue,"XmlscheR_596_11845@aString","Facebook"));

                    }

                }
        };

        x.SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie;
        app.UseFacebookAuthentication(X);
        /*
        app.UseFacebookAuthentication(
           appId: "*",appSecret: "*");
         * */

然后使用它访问用户的登录信息：

var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();

然后以下获得名字：

var firstNameClaim = loginInfo.ExternalIdentity.Claims.First(c => c.Type == "urn:facebook:first_name");