.net – 用Linkedin登录

如何实现Linkedin的登录方法,人们只需点击一个按钮并使用他们的Linkedin帐户登录,就像在Facebook或Twitter上一样？两者都使用OAuth,但我发现它们的指定库很容易使用.对于Linkedin我只在DotNetopenAuth中找到了一些示例代码,但我无法理解它.

是否有任何库可用于促进Linkedin的登录功能？或者有关如何使用DotNetopenAuth 4在ASP.NET MVC中执行此操作的任何教程？

解决方法

这看起来是一个非常可靠的样本

http://mrsarker.wordpress.com/2011/08/20/linkedin-rest-api-in-asp-net-mvc/

[HandleError]
public class LinkedInController : Controller
{
    public ActionResult index()
    {
        return AuthenticatetoLinkedIn();
    }

    static string token_secret = "";
    public ActionResult AuthenticatetoLinkedIn()
    {
        var credentials = new OAuthCredentials
        {
            CallbackUrl = "http://localhost/home/callback",ConsumerKey = ConfigurationManager.AppSettings["ConsumerKey"],ConsumerSecret = ConfigurationManager.AppSettings["ConsumerSecret"],Verifier = "123456",Type = OAuthType.RequestToken
        };

        var client = new RestClient { Authority = "https://api.linkedin.com/uas/oauth",Credentials = credentials };
        var request = new RestRequest { Path = "requestToken" };
        RestResponse response = client.Request(request);

        token = response.Content.Split('&').Where(s => s.StartsWith("oauth_token=")).Single().Split('=')[1];
        token_secret = response.Content.Split('&').Where(s => s.StartsWith("oauth_token_secret=")).Single().Split('=')[1];
        Response.Redirect("https://api.linkedin.com/uas/oauth/authorize?oauth_token=" + token);
        return null;
    }

    string token = "";
    string verifier = "";
    public ActionResult Callback()
    {
        token = Request["oauth_token"];
        verifier = Request["oauth_verifier"];
        var credentials = new OAuthCredentials
        {
            ConsumerKey = ConfigurationManager.AppSettings["ConsumerKey"],Token = token,TokenSecret = token_secret,Verifier = verifier,Type = OAuthType.Accesstoken,ParameterHandling = OAuthParameterHandling.HttpAuthorizationHeader,SignatureMethod = OAuthSignatureMethod.HmacSha1,Version = "1.0"
        };

        var client = new RestClient { Authority = "https://api.linkedin.com/uas/oauth",Credentials = credentials,Method = WebMethod.Post };
        var request = new RestRequest { Path = "accesstoken" };
        RestResponse response = client.Request(request);
        string content = response.Content;


        string accesstoken = response.Content.Split('&').Where(s => s.StartsWith("oauth_token=")).Single().Split('=')[1];
        string accesstokenSecret = response.Content.Split('&').Where(s => s.StartsWith("oauth_token_secret=")).Single().Split('=')[1];

        var company = new LinkedInService(accesstoken,accesstokenSecret).GetCompany(162479);            

        // Some commented call to API
        //company = new LinkedInService(accesstoken,accesstokenSecret).GetCompanyByUniversalName("linkedin");
       //  var companies = new LinkedInService(accesstoken,accesstokenSecret).GetCompaniesByEmailDomain("apple.com");            
       // var companies1 = new LinkedInService(accesstoken,accesstokenSecret).GetCompaniesByEmailDomain("linkedin.com");           
       // var companies2= new LinkedInService(accesstoken,accesstokenSecret).GetCompaniesByIdAnduniversalName("162479","linkedin");
        //var people = new LinkedInService(accesstoken,accesstokenSecret).GetPersonById("f7cp5sKscd");
        //var people = new LinkedInService(accesstoken,accesstokenSecret).GetCurrentUser();

        //string url = Url.Encode("http://bd.linkedin.com/pub/rakibul-islam/37/522/653");
        //var people = new LinkedInService(accesstoken,accesstokenSecret).GetPeoPleByPublicProfileUrl(url);
        //var peopleSearchresult = new LinkedInService(accesstoken,accesstokenSecret).SearchPeopleByKeyWord("Princes");

        var peopleSearchresult = new LinkedInService(accesstoken,accesstokenSecret).GetPeopleByFirstName("Mizan");
        String companyName = company.Name;
        return Content(companyName);            
    }
}


public class LinkedInService
{
    private const string URL_BASE = "http://api.linkedin.com/v1";
    public static string ConsumerKey { get { return ConfigurationManager.AppSettings["ConsumerKey"]; } }
    public static string ConsumerKeySecret { get { return ConfigurationManager.AppSettings["ConsumerSecret"]; } }
    public string Accesstoken { get; set; }
    public string AccesstokenSecret { get; set; }

    public LinkedInService(string accesstoken,string accesstokenSecret)
    {
        this.Accesstoken = accesstoken;
        this.AccesstokenSecret = accesstokenSecret;
    }

    private OAuthCredentials AccessCredentials
    {
        get
        {
            return new OAuthCredentials
            {
                Type = OAuthType.Accesstoken,ConsumerKey = ConsumerKey,ConsumerSecret = ConsumerKeySecret,Token = Accesstoken,TokenSecret = AccesstokenSecret
            };
        }
    }

    #region Helper

    private RestResponse GetResponse(string path)
    {
        var client = new RestClient()
        {
            Authority = URL_BASE,Credentials = AccessCredentials,Method = WebMethod.Get
        };

        var request = new RestRequest { Path = path };

        return client.Request(request);
    }

    private T Deserialize(string xmlContent)
    {
        MemoryStream memoryStream = new MemoryStream(Encoding.ASCII.GetBytes(xmlContent));
        XmlSerializer deserializer = new XmlSerializer(typeof(T));
        return (T)deserializer.Deserialize(new StringReader(xmlContent));
    }

    #endregion

    // methods removed for brevity. check the original link for full source

}