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

Question

我在 MVC 3 中使用 DotNetOpenAuth。我能够使用 OpenId 进行身份验证。

所以我指向 Controller 的 URL 附加了一个变量 OpenId=

下面是一个例子:

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在 View 中？

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，以便用户可以在身份验证阶段授权您使用他的 OpenId 提供程序获取此信息:

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