C#对web客户端使用cookie httprequest

本文关键字：cookie httprequest 客户端 web | 更新日期: 2023-09-27 17:59:10

我通过httprequest和cookie在variable cookiecontanse中登录了网站。但现在我需要为webclient设置cookie get。我用了

 webClient.Headers.Add(HttpRequestHeader.Cookie,cookiecontanse.ToString)

但不起作用。为什么？

C#对web客户端使用cookie httprequest

用法：

        CookieContainer cookieJar = new CookieContainer();
        cookieJar.Add(new Cookie("my_cookie", "cookie_value", "/", "mysite"));
        CookieAwareWebClient client = new CookieAwareWebClient(cookieJar);
        string response = client.DownloadString("http://example.com/response_with_cookie_only.php");

public class CookieAwareWebClient : WebClient
{
    public CookieContainer CookieContainer { get; set; }
    public Uri Uri { get; set; }
    public CookieAwareWebClient()
        : this(new CookieContainer())
    {
    }
    public CookieAwareWebClient(CookieContainer cookies)
    {
        this.CookieContainer = cookies;
    }
    protected override WebRequest GetWebRequest(Uri address)
    {
        WebRequest request = base.GetWebRequest(address);
        if (request is HttpWebRequest)
        {
            (request as HttpWebRequest).CookieContainer = this.CookieContainer;
        }
        HttpWebRequest httpRequest = (HttpWebRequest)request;
        httpRequest.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
        return httpRequest;
    }
    protected override WebResponse GetWebResponse(WebRequest request)
    {
        WebResponse response = base.GetWebResponse(request);
        String setCookieHeader = response.Headers[HttpResponseHeader.SetCookie];
        if (setCookieHeader != null)
        {
            //do something if needed to parse out the cookie.
            if (setCookieHeader != null)
            {
                Cookie cookie = new Cookie(); //create cookie
                this.CookieContainer.Add(cookie);
            }
        }
        return response;
    }
}

您将看到GetWebRequest和GetWebResponse的两个重写方法。可以重写这些方法来处理cookie容器。

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