Question

我无法正常调用Twitter API。我必须这样做，因为我使用的软件包出现了问题，并且此修复程序与我的项目不兼容。

我想检索“最近”的推文列表，但我一直收到401。我觉得这是因为我创建签名的方式，但不确定。

我的请求网址是：

https://api.twitter.com/1.1/search/tweets.json?result_type=recent&count=1&q=#hashtag1 OR #hashtag2 OR #hashtag3

我有以下身份验证信息：

Dictionary<string, object> _parameters = new Dictionary<string, object>();
_parameters.Add("oauth_version", "1.0");
_parameters.Add("oauth_nonce", "[VALUE]");
_parameters.Add("oauth_timestamp", [TIMESTAMP]);
_parameters.Add("oauth_signature_method", "HMAC-SHA1");
_parameters.Add("oauth_consumer_key", "[VALUE]");
_parameters.Add("oauth_consumer_secret", "[VALUE]");
_parameters.Add("oauth_token", "[VALUE]");
_parameters.Add("oauth_token_secret", "[VALUE]");

我的“创建签名”方法如下。它使用带有搜索参数的完整URL来构造它：

    private static string GenerateSignature(Dictionary<string,object> parameters, Uri requestUri, string consumerSecret, string accessTokenSecret)
    {
        IEnumerable<KeyValuePair<string, object>> nonSecretParameters;

        nonSecretParameters = (from p in parameters
                               where (!SecretParameters.Contains(p.Key))
                               select p);

        Uri urlForSigning = requestUri;

        string signatureBaseString = string.Format(
            CultureInfo.InvariantCulture,
            "{0}&{1}&{2}",
            "GET",
            UrlEncode(NormalizeUrl(urlForSigning)),
            UrlEncode(nonSecretParameters));

        string key = string.Format(
            CultureInfo.InvariantCulture,
            "{0}&{1}",
            UrlEncode(consumerSecret),
            UrlEncode(accessTokenSecret));

        HMACSHA1 hmacsha1 = new HMACSHA1(Encoding.UTF8.GetBytes(key));
        byte[] signatureBytes = hmacsha1.ComputeHash(Encoding.UTF8.GetBytes(signatureBaseString));
        return Convert.ToBase64String(signatureBytes);
    }

    private static string UrlEncode(string value)
    {
        if (string.IsNullOrEmpty(value))
        {
            return string.Empty;
        }

        value = Uri.EscapeDataString(value);

        value = Regex.Replace(value, "(%[0-9a-f][0-9a-f])", c => c.Value.ToUpper());

        value = value
            .Replace("(", "%28")
            .Replace(")", "%29")
            .Replace("$", "%24")
            .Replace("!", "%21")
            .Replace("*", "%2A")
            .Replace("'", "%27");

        value = value.Replace("%7E", "~");

        return value;
    }

    private static string NormalizeUrl(Uri url)
    {
        string normalizedUrl = string.Format(CultureInfo.InvariantCulture, "{0}://{1}", url.Scheme, url.Host);
        if (!((url.Scheme == "http" && url.Port == 80) || (url.Scheme == "https" && url.Port == 443)))
        {
            normalizedUrl += ":" + url.Port;
        }

        normalizedUrl += url.PathAndQuery + url.Fragment.Replace("%20", " ");
        return normalizedUrl;
    }

获得签名后，将生成Authorisation标头，如下所示： OAuth oauth_consumer_key="[VALUE]",oauth_nonce="[VALUE]",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1565261231",oauth_token="[VALUE]",oauth_version="1.0",oauth_signature="[VALUE]"

然后，我将相关的身份验证参数附加到URL上，并向Twitter API发出请求。最终网址是这样的： https://api.twitter.com/1.1/search/tweets.json?result_type=recent&count=1&q=%23hashtag1 OR %23hashtag2 OR %23hashtag3

Twitter API授权问题-401错误

0 个答案: