[英]c# web browser cookies in httpwebrequest
我有一个加载页面的webbrowser控件。 然后,我按下按钮以调用此方法:
public void get(Uri myUri)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(myUri);
CookieContainer cookieJar = new CookieContainer();
cookieJar.SetCookies(webBrowser1.Document.Url,webBrowser1.Document.Cookie.Replace(';', ','));
request.CookieContainer = cookieJar;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
int cookieCount = cookieJar.Count;
Stream receiveStream = response.GetResponseStream();
StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
txt.Text = readStream.ReadToEnd();
txt2.Text = cookieCount.ToString();
}
从cookieCount int可以看出,如果我在登录Web浏览器控件中的页面之前调用该方法,我将获得6个cookie,而登录后获得7个cookie。但是,即使使用cookie,我也会得到响应就像我不会登录一样。因此,我猜想cookie是否不随请求一起发送?
谢谢!
匹配会话时,您的Web服务器可能会考虑cookie之外的其他一些HTTP请求标头 。 仅举几例: User-Agent
, Authorization
, Accept-Language
。
由于WebBrowser
控件和WebRequest
不共享会话,因此您需要复制WebBrowser
会话中的所有标头。 这将是一件很难的事,因为您需要以类似于Fiddler的方式来拦截WebBrowser
流量。
一个更可行的解决方案可能是通过使用Windows UrlMon API(例如URLOpenStream
, URLDownloadToFile
等)而不是WebRequest
与WebBrowser
保持相同的会话。 之所以UrlMon
,是因为WebBrowser
在后台使用了UrlMon
库。
我最近回答了一些相关问题:
每次调用此方法时,您都要重新创建CookieContainer,您需要在所有请求中使用相同的CookieContainer
您可以使用以下代码来处理您的请求:
static CookieContainer cookies = new CookieContainer();
static HttpWebRequest GetNewRequest(string targetUrl, CookieContainer SessionCookieContainer)
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(targetUrl);
request.CookieContainer = SessionCookieContainer;
request.AllowAutoRedirect = false;
return request;
}
public static HttpWebResponse MakeRequest(HttpWebRequest request, CookieContainer SessionCookieContainer, Dictionary<string, string> parameters = null)
{
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5Accept: */*";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.CookieContainer = SessionCookieContainer;
request.AllowAutoRedirect = false;
if (parameters != null)
{
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
string postData = "";
foreach (KeyValuePair<String, String> parametro in parameters)
{
if (postData.Length == 0)
{
postData += String.Format("{0}={1}", parametro.Key, parametro.Value);
}
else
{
postData += String.Format("&{0}={1}", parametro.Key, parametro.Value);
}
}
byte[] postBuffer = UTF8Encoding.UTF8.GetBytes(postData);
using (Stream postStream = request.GetRequestStream())
{
postStream.Write(postBuffer, 0, postBuffer.Length);
}
}
else
{
request.Method = "GET";
}
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
SessionCookieContainer.Add(response.Cookies);
while (response.StatusCode == HttpStatusCode.Found)
{
response.Close();
request = GetNewRequest(response.Headers["Location"], SessionCookieContainer);
response = (HttpWebResponse)request.GetResponse();
SessionCookieContainer.Add(response.Cookies);
}
return response;
}
并请求一个页面,
HttpWebRequest request = GetNewRequest("http://www.elitepvpers.com/forum/login.php?do=login", cookies);
Dictionary<string,string> parameters = new Dictionary<string,string>{{"your params","as key value"};
HttpWebResponse response = MakeRequest(request, cookies, parameters);
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
if(!reader.EndOfStream)
{
Console.Write(reader.ReadToEnd());
}
}
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