C#如何使用httpwebrequest写一个自登陆aspx的网站?

Question

如题?

Answer 1

自动登陆aspx网站的winform程序

Answer 2

http://blog.csdn.net/jinjazz/archive/2007/12/28/1996163.aspx

Answer 3

大鸟呀,这个不行哦.我说的是用httpwebrequest 

Answer 4

 private void button2_Click(object sender, EventArgs e)
        {            html = Http.GetHtml("http://www.xsxsxsxs.ccc", out aspcookie);
           aspcookie = aspcookie.Split(';')[0];
                        string postData =
                "qitopic_mingchen=%C4%E4%C3%FB%C8%CB%CA%BF&password="+url[3]+"&edit=bbbbbbbbb";
            string header;
            string returnHtml = Http.GetHtml("http://www.xsxsxsxs.ccc", postData, aspcookie, out header); //login
            richTextBox1.AppendText(returnHtml);
           
        }

Answer 5

class Http
    {
        public static string GetHtml(string URL)
        {
            WebRequest wrt;
            wrt = WebRequest.Create(URL);
            wrt.Credentials = CredentialCache.DefaultCredentials;
            WebResponse wrp;
            wrp = wrt.GetResponse();
            return new StreamReader(wrp.GetResponseStream(), Encoding.UTF8).ReadToEnd();
        }
        public static string GetHtml(string URL, out string cookie)
        {
            WebRequest wrt;
            wrt = WebRequest.Create(URL);
            wrt.Credentials = CredentialCache.DefaultCredentials;
            WebResponse wrp;            wrp = wrt.GetResponse();            string html = new StreamReader(wrp.GetResponseStream(), Encoding.UTF8).ReadToEnd();
            cookie = wrp.Headers.Get("Set-Cookie");
            return html;
        }
        public static string GetHtml(string URL, string postData, string cookie, out string header)
        {
            return GetHtml("http://gubapost.eastmoney.com", URL, postData, cookie, out header);
        }
        public static string GetHtml(string server, string URL, string postData, string cookie, out string header)
        {
            byte[] byteRequest = Encoding.Default.GetBytes(postData);
            return GetHtml(server, URL, byteRequest, cookie, out header);
        }
        public static string GetHtml(string server, string URL, byte[] byteRequest, string cookie, out string header)
        {
            byte[] bytes = GetHtmlByBytes(server, URL, byteRequest, cookie, out header);
            Stream getStream = new MemoryStream(bytes);
            StreamReader streamReader = new StreamReader(getStream, Encoding.UTF8);
            string getString = streamReader.ReadToEnd();
            streamReader.Close();
            getStream.Close();
            return getString;
        }
        public static byte[] GetHtmlByBytes(string server, string URL, byte[] byteRequest, string cookie,out string header)
        {
            long contentLength;
            HttpWebRequest httpWebRequest;
            HttpWebResponse webResponse;
            Stream getStream;            httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(URL);
            CookieContainer co = new CookieContainer();
            co.SetCookies(new Uri(server), cookie);            httpWebRequest.CookieContainer = co;            httpWebRequest.ContentType = "application/x-www-form-urlencoded";
            httpWebRequest.Accept =
                "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-shockwave-flash, */*";
            httpWebRequest.Referer = "http://guba.eastmoney.com/look,gssz,8181701.html";
            httpWebRequest.UserAgent =
                "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322)";
            httpWebRequest.Method = "Post";
            httpWebRequest.ContentLength = byteRequest.Length;
            Stream stream;
            stream = httpWebRequest.GetRequestStream();
            stream.Write(byteRequest, 0, byteRequest.Length);
            stream.Close();
            webResponse = (HttpWebResponse)httpWebRequest.GetResponse();
            header = webResponse.Headers.ToString();
            getStream = webResponse.GetResponseStream();
            contentLength = webResponse.ContentLength;            byte[] outBytes = new byte[contentLength];
            outBytes = ReadFully(getStream);
            getStream.Close();
            return outBytes;
        }
        public static byte[] ReadFully(Stream stream)
        {
            byte[] buffer = new byte[128];
            using (MemoryStream ms = new MemoryStream())
            {
                while (true)
                {
                    int read = stream.Read(buffer, 0, buffer.Length);
                    if (read <= 0)
                        return ms.ToArray();
                    ms.Write(buffer, 0, read);
                }
            }
        }
        public static string GetHtml(string URL, string cookie, out string header)
       {
           return GetHtml(URL, cookie, out header, "http://gubapost.eastmoney.com");
       }
       public static string GetHtml(string URL, string cookie, out string header, string server)
       {
          HttpWebRequest httpWebRequest;
            HttpWebResponse webResponse;
           Stream getStream;
            StreamReader streamReader;
            string getString = "";
           httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(URL);
           httpWebRequest.Accept = "*/*";
            httpWebRequest.Referer = "http://guba.eastmoney.com/topic,hxnc.html";
           CookieContainer co = new CookieContainer();
           co.SetCookies(new Uri(server), cookie);
           httpWebRequest.CookieContainer = co;
            httpWebRequest.UserAgent =
                "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322)";
            httpWebRequest.Method = "GET";
           webResponse = (HttpWebResponse)httpWebRequest.GetResponse();
            header = webResponse.Headers.ToString();
         getStream = webResponse.GetResponseStream();
           streamReader = new StreamReader(getStream, Encoding.UTF8);
       getString = streamReader.ReadToEnd();
            
        streamReader.Close();
         getStream.Close();
         return getString;
       }
        #region --stream--
        public static Stream GetStreamByBytes(string server, string URL, byte[] byteRequest, string cookie,
                                              out string header)
        {
            Stream stream = new MemoryStream(GetHtmlByBytes(server, URL, byteRequest, cookie, out header));
            return stream;
        }
        #endregion
    }

Answer 6

postData 是你需要提交的內容

Answer 7

1,分析你需要登陆的网页
2,获取你需要POST的数据,
3,httpWebRequest POST 登陆信息，即可。有时候可能需要多次跳转，自己在具体分析。