使用Webclient获取CookieContainer并设置此CookieContainer

Question

我使用Webclient类，首先我用它做一个Post请求，并将登录数据发送到服务器。从这篇文章中我想要CookieContainer，但是我怎么才能得到这个呢？在此之后，我想向同一服务器发送一个Get请求，现在使用Post请求中的CookieContainer。所以我首先想要获取cookie，然后想要设置它。但是它是如何与Webclient类一起工作的呢？我找到了类似这样的东西：

public class CookieAwareWebClient : WebClient
{
    private readonly CookieContainer m_container = new CookieContainer();

    protected override WebRequest GetWebRequest(Uri address)
    {
        WebRequest request = base.GetWebRequest(address);
        HttpWebRequest webRequest = request as HttpWebRequest;
        if (webRequest != null)
        {
            webRequest.CookieContainer = m_container;
        }
        return request;
    }
}

但是使用这个类时，我不能在Get请求中使用来自Post请求的CookieContainer。

Answer 1

你能试试这个吗？

public class CookieAwareWebClient : WebClient
{
  private static CookieContainer m_container = null;

  protected override WebRequest GetWebRequest(Uri address)
  {
    WebRequest request = base.GetWebRequest(address);
    HttpWebRequest webRequest = request as HttpWebRequest;
    if (m_container != null)
    {
        webRequest.CookieContainer = m_container;// will be called from the second time onwards
    }
    else
    {
      webRequest.CookieContainer = new CookieContainer();// First time
      m_container =  webRequest.CookieContainer; // Copy the container after the post is success
    }
    return request;
  }
}