c# - 在 url 和参数中传递逗号 (,) 时，Twitter 流式传输 api 返回未授权

Question

我正在使用 c# 代码来使用 api，当我不添加逗号 (,) 时它工作正常但是使用逗号它返回未授权，逗号编码有任何问题吗？

网址

https://stream.twitter.com/1.1/statuses/filter.json?track=twitter&locations=-122.75,36.8,-121.75,37.8

标题参数

basestringParameters.Add("track", "twitter"); basestringParameters.Add("locations", "-122.75,36.8,-121.75,37.8");

我的基础字符串

GET&https%3A%2F%2Fstream.twitter.com%2F1.1%2Fstatuses%2Ffilter.json&locations%3D-122.75%2C36.8%2C-121.75%2C37.8%26oauth_consumer_key%3DxtOm0eNd8pm7hv643YqjZKhjH%26oauth_nonce%3DNjM1NjgxMzQ2Nzk5MjAwOTc0%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1432519880%26oauth_token%3D603356335-N3LRAKyYobdbNB4PeMaQkjNsiHvEEcX9DKHiC93Q%26oauth_version%3D1.0%26track%3Dtwitter

授权 header

OAuthoauth_nonce="NjM1NjgxMzQ2Nzk5MjAwOTc0",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1432519880",oauth_consumer_key="xtOm0eNd8pm7hv643YqjZKhjH",oauth_token="603356335-N3LRAKyYobdbNB4PeMaQkjNsiHvEEcX9DKHiC93Q",oauth_signature="vYeOXGxuFRMiP%2BThEtFwHVG8Jvo%3D",oauth_version="1.0"

完整代码

    string oauthconsumerkey = "xxxxxx";
    string oauthconsumersecret = "xxxxx";
    string oauthtoken = "xxxxx";
    string oauthtokensecret = "xxxxx";


    public void Search()
    {
        string url = "https://stream.twitter.com/1.1/statuses/filter.json?track=twitter";

        string oauthsignaturemethod = "HMAC-SHA1";
        string oauthversion = "1.0";
        string oauthnonce = Convert.ToBase64String(
          new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString()));
        TimeSpan timeSpan = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
        string oauthtimestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString();
        SortedDictionary<string, string> basestringParameters = new SortedDictionary<string, string>();
        basestringParameters.Add("track", "twitter");
        //basestringParameters.Add("locations", "-122.75,36.8,-121.75,37.8");
        basestringParameters.Add("oauth_version", oauthversion);
        basestringParameters.Add("oauth_consumer_key", oauthconsumerkey);
        basestringParameters.Add("oauth_nonce", oauthnonce);
        basestringParameters.Add("oauth_signature_method", oauthsignaturemethod);
        basestringParameters.Add("oauth_timestamp", oauthtimestamp);
        basestringParameters.Add("oauth_token", oauthtoken);
        //Build the signature string
        StringBuilder baseString = new StringBuilder();
        baseString.Append("GET" + "&");
        baseString.Append(EncodeCharacters(Uri.EscapeDataString(url.Split('?')[0]) + "&"));
        foreach (KeyValuePair<string, string> entry in basestringParameters)
        {
            baseString.Append(EncodeCharacters(Uri.EscapeDataString(entry.Key + "=" + entry.Value + "&")));
        }

        //Remove the trailing ambersand char last 3 chars - %26
        string finalBaseString = baseString.ToString().Substring(0, baseString.Length - 3);

        //Build the signing key
        string signingKey = EncodeCharacters(Uri.EscapeDataString(oauthconsumersecret)) + "&" +
        EncodeCharacters(Uri.EscapeDataString(oauthtokensecret));

        //Sign the request
        HMACSHA1 hasher = new HMACSHA1(new ASCIIEncoding().GetBytes(signingKey));
        string oauthsignature = Convert.ToBase64String(
          hasher.ComputeHash(new ASCIIEncoding().GetBytes(finalBaseString)));

        //Tell Twitter we don't do the 100 continue thing
        ServicePointManager.Expect100Continue = false;

        //authorization header
        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(EncodeCharacters(url));
        StringBuilder authorizationHeaderParams = new StringBuilder();
        authorizationHeaderParams.Append("OAuth ");
        authorizationHeaderParams.Append("oauth_nonce=" + "\"" + Uri.EscapeDataString(oauthnonce) + "\",");
        authorizationHeaderParams.Append("oauth_signature_method=" + "\"" + Uri.EscapeDataString(oauthsignaturemethod) + "\",");
        authorizationHeaderParams.Append("oauth_timestamp=" + "\"" + Uri.EscapeDataString(oauthtimestamp) + "\",");
        authorizationHeaderParams.Append("oauth_consumer_key=" + "\"" + Uri.EscapeDataString(oauthconsumerkey) + "\",");
        if (!string.IsNullOrEmpty(oauthtoken))
            authorizationHeaderParams.Append("oauth_token=" + "\"" + Uri.EscapeDataString(oauthtoken) + "\",");
        authorizationHeaderParams.Append("oauth_signature=" + "\"" + Uri.EscapeDataString(oauthsignature) + "\",");
        authorizationHeaderParams.Append("oauth_version=" + "\"" + Uri.EscapeDataString(oauthversion) + "\"");
        webRequest.Headers.Add("Authorization", authorizationHeaderParams.ToString());

        webRequest.Method = "GET";
        webRequest.ContentType = "application/x-www-form-urlencoded";

        //Allow us a reasonable timeout in case Twitter's busy
        webRequest.Timeout = 3 * 60 * 1000;
        try
        {
            //Proxy settings
            //webRequest.Proxy = new WebProxy("enter proxy details/address");
            HttpWebResponse webResponse = webRequest.GetResponse() as HttpWebResponse;
            Stream dataStream = webResponse.GetResponseStream();
            // Open the stream using a StreamReader for easy access.
            StreamReader reader = new StreamReader(dataStream);
            // Read the content.
            string responseFromServer = "";
            String s;
            Console.WriteLine("output start");
            while ((s = reader.ReadLine()) != null)
            {

                Debug.Write(s);
                responseFromServer += s;
            }
            Console.WriteLine("output over");
            ViewBag.Result += responseFromServer + "<br/>";
        }
        catch (Exception ex)
        {
            ViewBag.Result = ex.ToString();
        }
    }








    private string EncodeCharacters(string data)
    {
        //as per OAuth Core 1.0 Characters in the unreserved character set MUST NOT be encoded
        //unreserved = ALPHA, DIGIT, '-', '.', '_', '~'
        if (data.Contains("!"))
            data = data.Replace("!", "%21");
        if (data.Contains("'"))
            data = data.Replace("'", "%27");
        if (data.Contains("("))
            data = data.Replace("(", "%28");
        if (data.Contains(")"))
            data = data.Replace(")", "%29");
        if (data.Contains("*"))
            data = data.Replace("*", "%2A");
        if (data.Contains(","))
            data = data.Replace(",", "%2C");

        return data;
    }   

谢谢!

Answer 1

尝试用“%2C”替换逗号“,”