asp.net-mvc - DotNetOpenAuth 如何从 OpenId 中检索电子邮件和名称

Question

我将 DotNetOpenAuth 与 MVC 3 一起使用。我能够使用 OpenId 进行身份验证。

所以我指向控制器的 URL 附加了一个变量 OpenId=

这是一个例子：

https://www.google.com/accounts/o8/id?id=DFtOawDkCUoLb3YxPzmrEI59-JiSZiAeR-NWw-0

http://mysite.com/Account/Register?OpenID= .......

如何获取 OpenId 帐户的电子邮件和名称并显示给视图？

switch (response.Status)
            {
                case AuthenticationStatus.Authenticated:
                    LogOnModel lm = new LogOnModel();
                    lm.OpenID = response.ClaimedIdentifier;
                    // Check if user exist
                    MembershipUser user = MembershipService.GetUser(lm.OpenID);
                    if (user != null)
                    {
                        lm.UserName = user.UserName;
                        FormsService.SignIn(user.UserName, false);
                    }

                    return View("LogOn", lm);

                case AuthenticationStatus.Canceled:
                    ViewBag.Message = "Canceled at provider";
                    return View("LogOn");
                case AuthenticationStatus.Failed:
                    ViewBag.Message = response.Exception.Message;
                    return View("LogOn");
            }

Answer 1

var fetchResponse = response.GetExtension<FetchResponse>();
string email = String.Empty; 
if (fetchResponse != null)
{
    email =  fetchResponse.GetAttributeValue(WellKnownAttributes.Contact.Email);
}  

但是不要忘记在发送请求时询问它，以便用户可以授权您在身份验证阶段使用他的 OpenId 提供者获得此信息：

IAuthenticationRequest request = openid.CreateRequest(openidurl);
var fetchRequest = new FetchRequest();
fetchRequest.Attributes.AddRequired(WellKnownAttributes.Contact.Email);
request.AddExtension(fetch);
request.RedirectToProvider();