Question

我正在尝试使用C＃实现 500px API。我能够使用500px API对用户进行身份验证，但我无法获得 access_token 来交换 response_token ，这使得我的第三步Oauth 1.0不完整。我可以授权用户并获取 oauth_token 和 oauth_verifier ，但当我使用 oauth_token 进行以下请求时： -

       https://api.500px.com/v1/oauth/access_token

500内部服务器错误以及以下屏幕被抛出

我已经调试了几千次我的代码，尝试了不同的方式来形成URL，为请求添加了各种参数但没有帮助。我非常困难，因为在500px开发者网站或网站上几乎没有关于在C＃中使用此api的信息。我走到了尽头！
以下是我的代码： -

1.]用于请求令牌和授权用户： -

string normalizedUrl; string normalizedRequestParameters; OAuth.OAuthBase myOAuth = new OAuth.OAuthBase(); try { Uri uri = new Uri("https://api.500px.com/v1/oauth/request_token"); string consumerKey = "u26X4av9ydNPd7kteT7bunfcdjHqVttYWIDOC1lA"; string consumerSecret = "73iaFPqCR4xkH3dgYIcPauTqhI6tMHWChDivnOP7"; string timeStamp = myOAuth.GenerateTimeStamp(); string nonce = myOAuth.GenerateNonce(); myOAuth.includeVersion = true; string signature = myOAuth.GenerateSignature(uri, consumerKey, consumerSecret, "", "", "GET", timeStamp, nonce, OAuth.OAuthBase.SignatureTypes.HMACSHA1, out normalizedUrl, out normalizedRequestParameters); string authorizationUrl = normalizedUrl + "?" + normalizedRequestParameters + "&oauth_signature=" + myOAuth.UrlEncode(signature); Uri signInUrl = new Uri(authorizationUrl); HttpWebRequest request = (HttpWebRequest)WebRequest.Create(signInUrl); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); StreamReader stIn = new StreamReader(response.GetResponseStream()); string responseString = stIn.ReadToEnd(); stIn.Close(); //oauth_token=cf40227bb7ede4d6e56ff790324761b3&oauth_token_secret=0bcb59dff2c1d095739c86c534fc62d7ed224fecfe8744d48c9c95f36211382f if (responseString.Contains("oauth_token=") && responseString.Contains("oauth_token_secret=")) { String RespToken = responseString.Split('&')[0].Replace("oauth_token=", ""); String RespSecret = responseString.Split('&')[1].Replace("oauth_token_secret=", ""); uri = new Uri("https://api.500px.com/v1/oauth/authorize"); timeStamp = myOAuth.GenerateTimeStamp(); nonce = myOAuth.GenerateNonce(); myOAuth.includeVersion = true; signature = myOAuth.GenerateSignature(uri, consumerKey, consumerSecret, RespToken , RespSecret, "GET", timeStamp, nonce, OAuth.OAuthBase.SignatureTypes.HMACSHA1, out normalizedUrl, out normalizedRequestParameters); Console.WriteLine("Signature=="+signature); authorizationUrl = normalizedUrl + "?" + normalizedRequestParameters + "&oauth_signature=" + myOAuth.UrlEncode(signature); Uri signInUrl1 = new Uri(authorizationUrl); webBrowser1.Navigate(signInUrl1);

}

2.]用户点击授权此应用程序获取access_token后： -

private void webBrowser_Navigated(object sender, WebBrowserNavigatedEventArgs e) { string parameters; string normalizedUrl; string normalizedRequestParameters; string consumerKey = "u26X4av9ydNPd7kteT7bunfcdjHqVttYWIDOC1lA"; string consumerSecret = "73iaFPqCR4xkH3dgYIcPauTqhI6tMHWChDivnOP7"; OAuth.OAuthBase myOAuth = new OAuth.OAuthBase(); try { if (e.Url.ToString().Contains("https://www.xyz.com/")) { String url = (e.Url.ToString()).Replace("https://www.xyz.com/?",""); if( url.Contains("oauth_token=")) { string OAuthToken = url.Split('&')[0].Replace("oauth_token=", ""); var uri = "https://api.500px.com/v1/oauth/access_token"; OAuthBase oAuth = new OAuthBase(); var nonce = oAuth.GenerateNonce(); var timeStamp = oAuth.GenerateTimeStamp(); var signature = oAuth.GenerateSignature(new Uri(uri), consumerKey, consumerSecret, OAuthToken, String.Empty, "POST", timeStamp, nonce, OAuthBase.SignatureTypes.HMACSHA1, out normalizedUrl, out normalizedRequestParameters); signature = HttpUtility.UrlEncode(signature); var requestUri = normalizedUrl + "?" + "oauth_callback=https://www.xyz.com" +"?"+ normalizedRequestParameters + "&oauth_signature=" + myOAuth.UrlEncode(signature); Console.WriteLine(requestUri); var request = (HttpWebRequest)WebRequest.Create(requestUri.ToString()); request.Method = WebRequestMethods.Http.Post; request.ContentType = "application/json"; // request.ContentType = "application / x - www - form - urlencoded"; //request.Credentials = CredentialCache.DefaultCredentials; //request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)"; var response = request.GetResponse(); var reader = new StreamReader(response.GetResponseStream()); var accessToken = reader.ReadToEnd(); } } catch(Exception ex) { Console.Writeln(ex.toString()); } }

以下是我的代码中断的行： -

var response = request.GetResponse();

完全在我的智慧结束这个问题，无法找到它的根源。任何帮助任何方向将受到高度赞赏。任何建议都会有很大的帮助!!
提前谢谢！

Answer 1

以下是该做什么：

使用GET而不是POST（POST可能有效;我没有尝试过，并且在500px和POSTing方面收效甚微）
在查询网址中包含您在授权步骤中收到的oauth_verifier
使用您的使用者密钥签署整个查询并请求令牌密钥（在步骤1中返回）

代码段，应在HTTP回复正文中返回“oauth_token = ...＆amp; oauth_token_secret = ...”。

确保您的OAuth实施不会删除任何以“oauth_”开头的参数！我是，它正在剥离500px所需的oauth_verifier参数。

        OAuth.OAuthBase oauth = new OAuth.OAuthBase();

        string strUrl = "";
        string strParams = "";

        string signature = oauth.GenerateSignature(new Uri(API_URL + "oauth/access_token?oauth_verifier=" + this.oauthVerifier),
                                            this.consumerKey, this.consumerSecret, this.oauthToken, this.requestTokenSecret,
                                            "GET", oauth.GenerateTimeStamp(), oauth.GenerateNonce(),
                                            OAuth.OAuthBase.SignatureTypes.HMACSHA1,
                                            out strUrl, out strParams);

        string authorizationUrl = strUrl + "?" + strParams + "&oauth_signature=" + System.Web.HttpUtility.UrlEncode(signature);
        Debug.WriteLine("url>" + authorizationUrl);

        Response reply = SendGetRequest(authorizationUrl);
        if (reply.Success)
        {
            Debug.WriteLine("access_token>" + reply.Content);

500 px api与C＃抛出500内部服务器错误

1 个答案: