Question

我已经检查了几个相关问题以找到我的问题的答案，但都无济于事。这个问题Can we get email ID from Twitter oauth API?让我获得Twitter支持以允许我的应用程序的权限如下：使用此doc作为指南和标记的答案code（稍微修改一下）

var resource_url = "https://api.twitter.com/1.1/account/verify_credentials.json";
var postBody = "include_email=true";//
resource_url += "?" + postBody;

生成签名并请求从Twitter获取用户的详细信息，然后在我的MVC应用中使用 401 Unauthorized 。

然而，当我使用twitter签名生成器工具生成授权标头并使用fiddler向https://api.twitter.com/1.1/account/verify_credentials.json?include_email=true发出GET请求时，我只收到一次电子邮件，我必须在twitter中重新生成我的应用密钥再来一次。

是否有关于如何生成有效签名并通过.Net TwitterAuthentication发出有效请求来检索Twitter用户电子邮件的文档？

Answer 1

几乎从我的头上拔出所有的头发后，我终于开始工作了。我发现Signature基本字符串与我的代码生成的字符串略有不同。经过一些小调整，我能够生成一个有效的签名基本字符串。

在 Startup.cs 中，我添加了access_token和access_secret作为声明。我没有使用我的应用程序中找到的那个，因为用户在尝试登录或注册时需要调用一个新的：

var twitterOptions = new Microsoft.Owin.Security.Twitter.TwitterAuthenticationOptions()
{
   ConsumerKey = ConfigurationManager.AppSettings["consumer_key"],
   ConsumerSecret = ConfigurationManager.AppSettings["consumer_secret"],
   Provider = new Microsoft.Owin.Security.Twitter.TwitterAuthenticationProvider
   {
      OnAuthenticated = (context) =>
      {
         context.Identity.AddClaim(new System.Security.Claims.Claim("urn:twitter:access_token", context.AccessToken));
         context.Identity.AddClaim(new System.Security.Claims.Claim("urn:twitter:access_secret", context.AccessTokenSecret));
         return Task.FromResult(0);
      }
   },
   BackchannelCertificateValidator = new Microsoft.Owin.Security.CertificateSubjectKeyIdentifierValidator(new[]
   {
      "A5EF0B11CEC04103A34A659048B21CE0572D7D47", // VeriSign Class 3 Secure Server CA - G2
      "0D445C165344C1827E1D20AB25F40163D8BE79A5", // VeriSign Class 3 Secure Server CA - G3
      "7FD365A7C2DDECBBF03009F34339FA02AF333133", // VeriSign Class 3 Public Primary Certification Authority - G5
      "39A55D933676616E73A761DFA16A7E59CDE66FAD", // Symantec Class 3 Secure Server CA - G4
      "‎add53f6680fe66e383cbac3e60922e3b4c412bed", // Symantec Class 3 EV SSL CA - G3
      "4eb6d578499b1ccf5f581ead56be3d9b6744a5e5", // VeriSign Class 3 Primary CA - G5
      "5168FF90AF0207753CCCD9656462A212B859723B", // DigiCert SHA2 High Assurance Server C‎A 
      "B13EC36903F8BF4701D498261A0802EF63642BC3" // DigiCert High Assurance EV Root CA
    }),
    CallbackPath = new PathString("/twitter/account/ExternalLoginCallback")
};

 app.UseTwitterAuthentication(twitterOptions);

最后在我的控制器中，我只是打电话给我的帮助班，从twitter获取名称和电子邮件：

    if (loginInfo.Login.LoginProvider.ToLower() == "twitter")
    {
        string access_token = loginInfo.ExternalIdentity.Claims.Where(x => x.Type == "urn:twitter:access_token").Select(x => x.Value).FirstOrDefault();
        string access_secret = loginInfo.ExternalIdentity.Claims.Where(x => x.Type == "urn:twitter:access_secret").Select(x => x.Value).FirstOrDefault();
        TwitterDto response = MyHelper.TwitterLogin(access_token, access_secret, ConfigurationManager.AppSettings["consumer_key"], ConfigurationManager.AppSettings["consumer_secret"]);
       // by now response.email should possess the email value you need
    }

助手类方法：

这是我为了提出有效请求而调整的部分：

baseString = string.Concat（＆＃34; GET＆amp;＆＃34;，Uri.EscapeDataString（resource_url） +＆＃34;＆amp;＆＃34; + Uri.EscapeDataString（request_query），＆＃34;％26＆＃34;，Uri.EscapeDataString（baseString））;

public static TwitterDto TwitterLogin(string oauth_token, string oauth_token_secret, string oauth_consumer_key, string oauth_consumer_secret)
        {
            // oauth implementation details
            var oauth_version = "1.0";
            var oauth_signature_method = "HMAC-SHA1";

            // unique request details
            var oauth_nonce = Convert.ToBase64String(
                new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString()));
            var timeSpan = DateTime.UtcNow
                - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
            var oauth_timestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString();

            var resource_url = "https://api.twitter.com/1.1/account/verify_credentials.json";
            var request_query = "include_email=true";
            // create oauth signature
            var baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" +
                            "&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}";

            var baseString = string.Format(baseFormat,
                                        oauth_consumer_key,
                                        oauth_nonce,
                                        oauth_signature_method,
                                        oauth_timestamp,
                                        oauth_token,
                                        oauth_version
                                        );

            baseString = string.Concat("GET&", Uri.EscapeDataString(resource_url) + "&" + Uri.EscapeDataString(request_query), "%26", Uri.EscapeDataString(baseString));

            var compositeKey = string.Concat(Uri.EscapeDataString(oauth_consumer_secret),
                                    "&", Uri.EscapeDataString(oauth_token_secret));

            string oauth_signature;
            using (HMACSHA1 hasher = new HMACSHA1(ASCIIEncoding.ASCII.GetBytes(compositeKey)))
            {
                oauth_signature = Convert.ToBase64String(
                    hasher.ComputeHash(ASCIIEncoding.ASCII.GetBytes(baseString)));
            }

            // create the request header
            var headerFormat = "OAuth oauth_consumer_key=\"{0}\", oauth_nonce=\"{1}\", oauth_signature=\"{2}\", oauth_signature_method=\"{3}\", oauth_timestamp=\"{4}\", oauth_token=\"{5}\", oauth_version=\"{6}\"";

            var authHeader = string.Format(headerFormat,
                                    Uri.EscapeDataString(oauth_consumer_key),
                                    Uri.EscapeDataString(oauth_nonce),
                                    Uri.EscapeDataString(oauth_signature),
                                    Uri.EscapeDataString(oauth_signature_method),
                                    Uri.EscapeDataString(oauth_timestamp),
                                    Uri.EscapeDataString(oauth_token),
                                    Uri.EscapeDataString(oauth_version)
                            );


            // make the request

            ServicePointManager.Expect100Continue = false;
            resource_url += "?include_email=true";
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(resource_url);
            request.Headers.Add("Authorization", authHeader);
            request.Method = "GET";

            WebResponse response = request.GetResponse();
            return JsonConvert.DeserializeObject<TwitterDto>(new StreamReader(response.GetResponseStream()).ReadToEnd());
        }
    }

    public class TwitterDto
    {
        public string name { get; set; }
        public string email { get; set; }
    }

这就是获取Twitter用户电子邮件所需的全部内容。我希望它可以帮助有人挣扎。请注意，问题中提到的步骤也非常重要。

Answer 2

用户使用twitter登录后，您必须更改代码以调用GET帐户/ verify_credentials方法。将参数include_email设置为true非常重要。当此设置为true时，将在用户对象中以字符串形式返回电子邮件。我正在使用这个库https://www.nuget.org/packages/linqtotwitter 所以我不必编写处理twitter api请求的代码

if (ableToNav)
  navNext.Enabled = true;

看看我在这里做了什么 http://www.bigbrainintelligence.com/Post/get-users-email-address-from-twitter-oauth-ap

这是一个简单而干净的解决方案

从Twitter API获取用户外部登录身份验证的电子邮件ASP.NET MVC C＃

2 个答案: