c# – .NET HTTP POST方法 – Cookie问题

发布时间：2020-12-15 08:47:03 所属栏目：百科来源：网络整理

导读：我正在尝试使用C#登录hotfile.com.第一个大问题是克服417错误,这条线解决了它： System.Net.ServicePointManager.Expect100Continue = false; 现在,当我尝试使用POST登录时,我收到此错误： You don’t seem to accept cookies. Cookies are required in orde

我正在尝试使用C#登录hotfile.com.第一个大问题是克服417错误,这条线解决了它：

System.Net.ServicePointManager.Expect100Continue = false;

现在,当我尝试使用POST登录时,我收到此错误：

You don’t seem to accept cookies. Cookies are required in order to log in. Help

我已经尝试了几次,并且用Google搜索,我仍然无法登录Hotfile.com ..我的代码是这样的：

string response;
byte[] buffer = Encoding.ASCII.GetBytes("user=XX&pass=XX");

CookieContainer cookies = new CookieContainer();
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create("http://hotfile.com/login.php");
WebReq.Credentials = new NetworkCredential("XX","XX");
WebReq.PreAuthenticate = true;
WebReq.Pipelined = true;
WebReq.CookieContainer = cookies;
WebReq.KeepAlive = true;
WebReq.Method = "POST";
WebReq.ContentType = "application/x-www-form-urlencoded";
WebReq.ContentLength = buffer.Length;
WebReq.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1)";

Stream PostData = WebReq.GetRequestStream();
PostData.Write(buffer,buffer.Length);
PostData.Close();

HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
Stream Answer = WebResp.GetResponseStream();
StreamReader _Answer = new StreamReader(Answer);
response = _Answer.ReadToEnd();
File.WriteAllText("dump.html",response);

当然,用户和通行证将拥有您的帐户值.

解决方法

这是我为您写的一个工作示例：

var cookies = new CookieContainer();
ServicePointManager.Expect100Continue = false;

var request = (HttpWebRequest)WebRequest.Create("http://www.hotfile.com/login.php");
request.CookieContainer = cookies;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
using (var requestStream = request.GetRequestStream())
using (var writer = new StreamWriter(requestStream))
{
    writer.Write("user=XX&pass=XX&returnto=/");
}

using (var responseStream = request.GetResponse().GetResponseStream())
using (var reader = new StreamReader(responseStream))
{
    var result = reader.ReadToEnd();
    Console.WriteLine(result);
}

（编辑：李大同）

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