通过C#消费OAuth2 RESTful服务时出现授权错误500

Question

我目前的工作是使用OAuth2来使用RESTful API.目前我研究了如何获取访问令牌,并且在我使用chrome扩展Rest Console时工作正常,但是当我尝试从我的应用程序执行此操作时,我总是收到错误,即我发送了无效的OAuth请求.您可以在下面看到我尝试使用API​​的三种方法,但没有成功.页面总是返回错误500.如果我错过了一些关键的东西,任何帮助将不胜感激.

    var auth = "Bearer " + item.access_token;


    /* First Attempt */
    var client = new RestClient("http://<link>");
    var request = new RestRequest("sample", Method.GET);
    request.AddHeader("Authorization", auth);
    request.AddHeader("Content-Type", "application/json;charset=UTF-8");
    request.AddHeader("Pragma", "no-cache");
    request.AddHeader("User-Agent", "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36");
    request.AddHeader("Accept", "application/json");
    request.RequestFormat = DataFormat.Json;
    var response = client.Execute(request);
    var content = response.Content;





    /* Second Attempt */
    string sURL = "http://<link>/sample";

    string result = "";

    using (WebClient client = new WebClient())
    {
        client.Headers["Authorization"] = auth;
        client.Headers["Content-Type"] = "application/json;charset=UTF-8";
        client.Headers["Pragma"] = "no-cache";
        client.Headers["User-Agent"] = "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36";
        client.Headers["Accept"] = "application/json";

        byte[] byteArray = Encoding.UTF8.GetBytes(parameters);

        var result1 = client.DownloadString(sURL);
    }


    /* Third Attempt */
    var request = (HttpWebRequest)WebRequest.Create(sURL);
    request.Method = "GET";
    request.ContentType = "application/json;charset=UTF-8";
    request.Accept = "application/json";
    request.Headers["Authorization"] = auth;
    request.UserAgent = "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36";
    string content;
    HttpStatusCode statusCode;
    using (var response = request.GetResponse())
    using (var stream = response.GetResponseStream())
    {
        var contentType = response.ContentType;
        Encoding encoding = null;
        if (contentType != null)
        {
            var match = Regex.Match(contentType, @"(?<=charset\=).*");
            if (match.Success)
                encoding = Encoding.GetEncoding(match.ToString());
        }

        encoding = encoding ?? Encoding.UTF8;

        statusCode = ((HttpWebResponse)response).StatusCode;
        using (var reader = new StreamReader(stream, encoding))
            content = reader.ReadToEnd();
    }

- - - - 编辑 - - - -

对于第一次尝试,我还尝试将身份验证添加到客户端变量client.Authenticator = Authenticate;whereOAuth2AuthorizationRequestHeaderAuthenticator Authenticate = new OAuth2AuthorizationRequestHeaderAuthenticator(item.access_token, item.token_type);

Answer 1

代码看起来是正确的。您所做的失败尝试表明问题在于令牌而不是代码。不记名令牌有过期时间。因此，就像您的令牌在您第一次使用 chrome REST 控制台扩展获取它和您编写代码之间一样过期了。但这里奇怪的情况是你得到的 500 错误代码。401 是令牌过期或不存在时的标准响应。500 错误代码始终意味着服务器错误。