传递的cookie的HttpWebRequest中的WinForms？ [英] Passing cookie with HttpWebRequest in winforms?

问题描述

请参阅下面的代码：

  objCookieContainer =新的CookieContainer（）; 
 
 HttpWebRequest的要求=（HttpWebRequest的）WebRequest.Create（http://website.com/login.php?user=xxx&pass=xxx）; 
 request.Method = WebRequestMethods.Http.Get; 
 request.Timeout = 15000; 
 request.Proxy = NULL; 
 request.CookieContainer = objCookieContainer; 
 
 HttpWebRequest的newRequest =（HttpWebRequest的）WebRequest.Create（http://website.com/page.php?link=url）; 
 newRequest.Method = WebRequestMethods.Http.Get; 
 newRequest.Timeout = 15000; 
 newRequest.Proxy = NULL; 
 newRequest.CookieContainer = objCookieContainer; 
 
 HttpWebResponse响应= NULL; 
 
响应=（HttpWebResponse）request.GetResponse（）; 
串readerRequest =新的StreamReader（response.GetResponseStream（），Encoding.UTF8）.ReadToEnd（）; 
 
响应=（HttpWebResponse）newRequest.GetResponse（）; 
串readerNewRequest =新的StreamReader（response.GetResponseStream（））为ReadToEnd（）。 
  

在使用request.GetResponse（），cookie将被成功地用数据填充它有它的后验证码和readerRequest填充过，在那之后我称之为newRequest.GetResponse（），但readerNewRequest是空的，我试着做很多事情，但总是相同的结果，只有这样，我已经解决了，这是通过在web浏览器对象我通过网址，我是能够得到使用WebBrowser.DocumentStream的内容。

我怎样才能解决呢？

解决方案

 私人无效的button1_Click（对象发件人，EventArgs五）
 {
变种objCookieContainer =新的CookieContainer（） ; 
 
 HttpWebRequest的要求=（HttpWebRequest的）WebRequest.Create（http://website.com/login.php?user=xxx&pass=xxx）; 
 request.Method = WebRequestMethods.Http.Get; 
 request.Timeout = 15000; 
 request.Proxy = NULL; 
 request.CookieContainer = objCookieContainer; 
 
 HttpWebRequest的newRequest =（HttpWebRequest的）WebRequest.Create（http://website.com/page.php?link=url）; 
 newRequest.Method = WebRequestMethods.Http.Post; 
 newRequest.Timeout = 15000; 
 newRequest.Proxy = NULL; 
 
 
 HttpWebResponse响应= NULL; 
 
响应=（HttpWebResponse）request.GetResponse（）; 
 //一旦你读响应u需要添加的头部发送到objCookieContainer所有的cookie，以便它可以在第二个响应
的foreach被转发（在response.Cookies饼干饼干）
 {
 objCookieContainer.Add（饼干）; 
} 
串readerRequest =新的StreamReader（response.GetResponseStream（），Encoding.UTF8）.ReadToEnd（）; 
 
 
 //既然你已经添加了饼干，这必须应对现在罚款
 newRequest.CookieContainer = objCookieContainer; 
响应=（HttpWebResponse）newRequest.GetResponse（）; 
串readerNewRequest =新的StreamReader（response.GetResponseStream（））为ReadToEnd（）。 
} 
  

---

如果你是.NET版本低于4.0ü可能会遇到的CookieContainer错误：检查此链接

Please see the following code:

    objCookieContainer = new CookieContainer();

    HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://website.com/login.php?user=xxx&pass=xxx");
    request.Method = WebRequestMethods.Http.Get;
    request.Timeout = 15000;
    request.Proxy = null;
    request.CookieContainer = objCookieContainer;

    HttpWebRequest newRequest = (HttpWebRequest)WebRequest.Create("http://website.com/page.php?link=url");
    newRequest.Method = WebRequestMethods.Http.Get;
    newRequest.Timeout = 15000;
    newRequest.Proxy = null;
    newRequest.CookieContainer = objCookieContainer;

    HttpWebResponse response = null;

    response = (HttpWebResponse)request.GetResponse();
    string readerRequest = new StreamReader(response.GetResponseStream(), Encoding.UTF8).ReadToEnd();

    response = (HttpWebResponse)newRequest.GetResponse();
    string readerNewRequest = new StreamReader(response.GetResponseStream()).ReadToEnd();

After the using the request.GetResponse(), the cookie is populated with data successfully and it have it's authentication code and the readerRequest is populated too, after that i call the newRequest.GetResponse() but the readerNewRequest is empty, i tried to do many things but always same result, the only way i have solved this is by using a WebBrowser object in which i pass the url and i was able to get the content using the WebBrowser.DocumentStream.

How can i solve this ?

解决方案

    private void button1_Click(object sender, EventArgs e)
    {
        var objCookieContainer = new CookieContainer();

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://website.com/login.php?user=xxx&pass=xxx");
        request.Method = WebRequestMethods.Http.Get;
        request.Timeout = 15000;
        request.Proxy = null;
        request.CookieContainer = objCookieContainer;

        HttpWebRequest newRequest = (HttpWebRequest)WebRequest.Create("http://website.com/page.php?link=url");
        newRequest.Method = WebRequestMethods.Http.Post;
        newRequest.Timeout = 15000;
        newRequest.Proxy = null;


        HttpWebResponse response = null;

        response = (HttpWebResponse)request.GetResponse();
        //once you read response u need to add all cookie sent in header to the 'objCookieContainer' so that it can be forwarded on second response
        foreach (Cookie cookie in response.Cookies)
        {
            objCookieContainer.Add(cookie);
        }
        string readerRequest = new StreamReader(response.GetResponseStream(), Encoding.UTF8).ReadToEnd();


        //since you have added the cookies, this must response fine now
        newRequest.CookieContainer = objCookieContainer;
        response = (HttpWebResponse)newRequest.GetResponse();
        string readerNewRequest = new StreamReader(response.GetResponseStream()).ReadToEnd();
    }

---

if you are .NET version below 4.0 u may encounter a CookieContainer Bug : Check This Link

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