ALM Rest API：站点会话返回“远程服务器返回错误：(400) 错误请求。”答案

【问题标题】：ALM Rest API : site-session returns 'The remote server returned an error: (400) Bad Request.'ALM Rest API：站点会话返回“远程服务器返回错误：(400) 错误请求。”
【发布时间】：2017-11-13 21:29:51
【问题描述】：

我收到“(400) 错误请求。”当我尝试针对 ALM REST API 进行完整身份验证时，第一部分（身份验证）成功）并且我获得了 LWSSO_COOKIE_KEY，但站点会话总是失败并显示 400 错误代码。

请问我做错了什么...很困惑！

    // Authentication XML : 0 = User, 1 = Password
    private const string AuthenticationXML = @"<alm-authentication>" +
        "<user>{0}</user><password>{1}</password></alm-authentication>";

    baseRequestURL = settings.QualityCentreURL + "/qcbin/";

身份验证首先完成（并且成功）：

string authRequest = baseRequestURL + "authentication-point/alm-authenticate";
HttpWebRequest myauthrequest = (HttpWebRequest)WebRequest.Create(authRequest);

string xml = String.Format(AuthenticationXML, qcSettings.Username, qcSettings.Password);

byte[] Requestbytes = Encoding.UTF8.GetBytes(xml);
myauthrequest.Method = "POST";
myauthrequest.ContentType = "application/xml";
myauthrequest.ContentLength = Requestbytes.Length;
myauthrequest.Accept = "application/xml";

Stream RequestStr = myauthrequest.GetRequestStream();
RequestStr.Write(Requestbytes, 0, Requestbytes.Length);
RequestStr.Close();
HttpWebResponse myauthres = (HttpWebResponse)myauthrequest.GetResponse();

authenticationCookie = myauthres.Headers.Get("Set-Cookie");

站点会话代码是：

    public void GetSiteSession()
    {
        // Creat the web request fore site-session.
        string request = baseRequestURL + "rest/site-session";
        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(request);

        string xml = String.Empty;
        byte[] requestbytes = Encoding.UTF8.GetBytes(xml);

        // Update the attributes before sending.
        webRequest.Method = "POST";
        webRequest.ContentType = "application/xml";
        webRequest.Accept = "application/xml";
        webRequest.Headers.Set(HttpRequestHeader.Cookie, authenticationCookie);

        try
        {
            Stream requestStream = webRequest.GetRequestStream();
            requestStream.Write(requestbytes, 0, requestbytes.Length);
            requestStream.Close();

            HttpWebResponse webRequestResponse = (HttpWebResponse)webRequest.GetResponse();
            Stream responseStream = webRequestResponse.GetResponseStream();
            XDocument doc = XDocument.Load(responseStream);
        }
        catch (System.Net.WebException except)
        {
            Console.WriteLine(except.Message);
        }
    }

我已尝试按照this question 从 LWSSO_COOKIE_KEY 剪切 ;Path=/;HTTPOnly，但无济于事。

我找到的API参考（here）似乎很模糊，或者我可能没有理解它......：P

【问题讨论】：

您在向rest/site-session 发出post 请求时是否传递了LWSSO_COOKIE_KEY？
@Barney 嗨，是的 - webRequest.Headers.Set(HttpRequestHeader.Cookie, authenticationCookie);这是从一些示例代码中获取的，这是正确的设置方法吗？
authenticationCookie = "LWSSO_COOKIE_KEY=hnzW3mkqZzXzfUzQRscDZz6u-T2qm2DyG25HdVeQ-FVM0UhlPDFQ1kSp8vReWF4etsYhHFOD47DS0gfZ-E91VisYxnTNhdJ9YuhrP74RaabUMOH4OYlhn4_D6ep55PoTeZYgk-1l1dSNfdZb3NwK85yxk2YaajsPrn7cqsAlNIvvvNi3AdOIbrh9oyrS5r3LVo8cCGG_OJ2iwK9nyy8HA325bq4N7JWO7vna2NqBwS_A0Kr2h7_dVs_t_8rlHrwnkegjC2R2dUAL_V_ZZYBR-cARJu8Z4JP-1i73T2PQYGBvpJNrlvnqg9VZz8WITrl9"
我不熟悉 C#。在标题中添加 LW cookie 应该可以。

标签： c# rest alm hp-quality-center

【解决方案1】：

抱歉，我似乎应该在 12.53 中使用 'api/authentication/sign-in'

        string requestURL = baseRequestURL + "api/authentication/sign-in";

        try
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestURL);

            var credentials = String.Format("{0}:{1}", qcSettings.Username, qcSettings.Password);
            request.CookieContainer = authenticationCookieContainer;
            request.Headers.Set(HttpRequestHeader.Authorization, "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(credentials)));

            var authResponse = request.GetResponse();
            errorString = String.Empty;
        }
        catch (System.Net.WebException except)
        {
            errorString = except.Message;
            return false;
        }

        errorString = String.Empty;
        return true;
    }

【讨论】：