Question

我正在尝试使用新的Twitter REST API（版本1.1）执行搜索查询，该API使用OAuth身份验证。

我已按照以下链接找到的代码，但将其修改为GET请求而不是POST。 http://www.codeproject.com/Articles/247336/Twitter-OAuth-authentication-using-Net

“守则”在此之后再现。

由于我在本地开发，我还在以下链接中遵循了fisrt答案中的步骤： Twitter oAuth callbackUrl - localhost development

因此，我在Twitter上创建了第二个应用程序，并使用“127.0.0.1”作为回调URL（我同时将WebSite地址设置保留到我的生产中）。

尽管如此，我仍然收到401 Unauthorized Error。

有人理解为什么我无法获得授权吗？

        var oauth_token = "MyAccessToken";
        var oauth_token_secret = "MyAccessTokenSecret";
        var oauth_consumer_key = "MyConsumerKey";
        var oauth_consumer_secret = "MyConsumerSecret";

        var oauth_version = "1.0";
        var oauth_signature_method = "HMAC-SHA1";
        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/search/tweets.json?q=MyQuery";
        var status = "Updating status via REST API if this works";

        var baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" +
                        "&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}&status={6}";

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

        baseString = string.Concat("GET&", Uri.EscapeDataString(resource_url),
                     "&", 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)));
        }


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

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


        var postBody = "status=" + Uri.EscapeDataString(status);

        ServicePointManager.Expect100Continue = false;

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(resource_url);
        request.Headers.Add("Authorization", authHeader);
        request.Method = "GET";
        request.ContentType = "application/x-www-form-urlencoded";
        WebResponse response = request.GetResponse();

Answer 1

修改

您需要将查询字符串拆分为其组成参数，并将它们包含在您的基本字符串中。

注意：Twitter developer page不会将'status'列为此调用的参数，并且'rpp'参数已被'count'替换。试试这个：

var q = "Word1+Word2";
var count = "100";
var LatCity = "37.781157"; //example
var LngCity = "-122.398720"; //example
var geocode = string.Format("{0},{1},50km", LatCity, LngCity);
var callback = "?";

var baseFormat = "callback={0}&count={1}&geocode={2}&
    oauth_consumer_key={3}&oauth_nonce={4}&
    oauth_signature_method={5} &oauth_timestamp={6}&
    oauth_token={7}&oauth_version={8}&q={9}";

var baseString = string.Format(baseFormat,
    Uri.EscapeDataString(callback),
    Uri.EscapeDataString(count),
    Uri.EscapeDataString(geocode)
    oauth_consumer_key,
    oauth_nonce,
    oauth_signature_method,
    oauth_timestamp,
    oauth_token,
    oauth_version,
    Uri.EscapeDataString(q)
);

此外，您只在basetring中包含基本网址（不包含查询字符串）：

var base_url = "https://api.twitter.com/1.1/search/tweets.json";

baseString = string.Concat("GET&", Uri.EscapeDataString(base_url),
    "&", Uri.EscapeDataString(baseString));

使用新的Twitter REST API（版本1.1）时，localhost上有401个未经授权的错误

1 个答案: