如何使用ASP.NET MVC 5 OWIN获得Facebook的姓和名值？ [英] How to get Facebook first and last name values using ASP.NET MVC 5 and OWIN?

问题描述

我知道一个名称字段中提供，但我会preFER明确访问姓和名。有人能帮助呢？我还在包装我的头周围ASP.Net MVC。

I know that a 'Name' field is provided, but I would prefer to access the first and last names explicitly. Can someone help with this? I'm still wrapping my head around ASP.Net MVC.

推荐答案

在您Startup.Auth.cs ConfigureAuth（IAppBuilder应用）方法，设置Facebook的以下内容：

In your Startup.Auth.cs ConfigureAuth(IAppBuilder app) method, set the following for Facebook:

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, "XmlSchemaString", "Facebook"));

                    }

                }
        };

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

然后用它来访问用户的登录信息：

Then use this to access the user's login info:

var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();

然后将以下拿到的第一个名字：

And then the following to get the first name:

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

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