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我在这里看过 C# WebRequest using Cookies Multiple WebRequest in same session Reuse Connection with HttpWebRequest in C# C# keep session id over httpwebrequest

这就是我正在做的事情，除了我希望将我的 CookieContainer 作为成员（名为 session_cookie）存储在我的名为 connector 的类中。我的问题是，如果我在代码中使用临时对象，那么 cookie 可以正常工作：

CookieContainer t = new CookieContainer();
HTTPReq = (HttpWebRequest)WebRequest.Create(scriptURL);
HTTPReq.CookieContainer = t;

但是如果我使用

HTTPReq = (HttpWebRequest)WebRequest.Create(scriptURL);
HTTPReq.CookieContainer = session_cookie;

然后就不行了！我不知道为什么

这是连接器类代码：

public class Connector
{
    public CookieContainer session_cookie;
    private string session_id;
    private HttpWebRequest HTTPReq;
    private HttpWebResponse Response;

    //Session oriented connection
    public string serverRequest(string scriptURL, string payLoad) 
    {
        try
        {
            HTTPReq = (HttpWebRequest)WebRequest.Create(scriptURL);
        HTTPReq.CookieContainer = session_cookie;
        HTTPReq.Method = "POST";                      

        //Data arguments
        byte[] byteArray = Encoding.UTF8.GetBytes(payLoad);
        HTTPReq.ContentType = "application/x-www-form-urlencoded";
        HTTPReq.ContentLength = byteArray.Length;

        //Get the stream to write into
        Stream dataStream = HTTPReq.GetRequestStream();
        dataStream.Write(byteArray, 0, byteArray.Length);
        dataStream.Close();

        Response = (HttpWebResponse)HTTPReq.GetResponse();

        Encoding enc = Encoding.GetEncoding(1252);  // Western latin alphabet (windows default)

        //Get the repsonse from the server
        StreamReader ResponseStream = new StreamReader(Response.GetResponseStream(), enc);

        string response = ResponseStream.ReadToEnd().Trim();

        Response.Close();
        ResponseStream.Close();
        return response;
        }
        catch (WebException ex)
        {
        Console.WriteLine(ex.ToString());
        return null;
        }
    }    
}

有任何想法吗？

4

1 回答 1

0

您缺少需要初始化 CookieContainer 属性的 Connector 类的构造函数。您还应该使用 CookieCollection 从响应中捕获 cookie 并发送到下一个请求。像这样的东西应该工作：

public class Connector
{
    public CookieContainer session_cookie;
    private CookieCollection cookies;
    private string session_id;
    private HttpWebRequest HTTPReq;
    private HttpWebResponse Response;

    public Connector()
    {
        session_cookie = new CookieContainer();
        cookies = new CookieCollection();
    }

    //Session oriented connection
    public string serverRequest(string scriptURL, string payLoad) 
    {
        try
        {
        HTTPReq = (HttpWebRequest)WebRequest.Create(scriptURL);
        HTTPReq.CookieContainer = session_cookie;
            HTTPReq.CookieContainer.Add(cookies);
        HTTPReq.Method = "POST";                      

        //Data arguments
        byte[] byteArray = Encoding.UTF8.GetBytes(payLoad);
        HTTPReq.ContentType = "application/x-www-form-urlencoded";
        HTTPReq.ContentLength = byteArray.Length;

        //Get the stream to write into
        Stream dataStream = HTTPReq.GetRequestStream();
        dataStream.Write(byteArray, 0, byteArray.Length);
        dataStream.Close();

        Response = (HttpWebResponse)HTTPReq.GetResponse();
            cookies = Response.Cookies; // capture cookies from response for next request

        Encoding enc = Encoding.GetEncoding(1252);  // Western latin alphabet (windows default)

        //Get the repsonse from the server
        StreamReader ResponseStream = new StreamReader(Response.GetResponseStream(), enc);

        string response = ResponseStream.ReadToEnd().Trim();

        Response.Close();
        ResponseStream.Close();
        return response;
        }
        catch (WebException ex)
        {
        Console.WriteLine(ex.ToString());
        return null;
        }
    }

}
于 2013-09-26T20:27:37.690 回答