winform模拟人人登录的问题

Question

在firfox中正常网页登录的话，用fiddler发现有三个请求，第一个是post，第二三个是给，服务器分别返回三个值200,302,302。我在winform中模拟的也是三个依次为post get get，但是返回值都是302。 想问下这样是不是post请求出了问题？
模拟请求的话，应该模拟哪些数据那？如何判断登陆成功与否？
大家需要的话，我再贴代码

Answer 1

好吧  贴代码
            HttpWebRequest request = null;
            HttpWebResponse response = null;
            string gethost = string.Empty;
            CookieContainer cc = new CookieContainer();
            string Cookiesstr = string.Empty;
            try
            {
                string UserName = "username";
                string PassWord = "123456";
                string HostUrl = "http%3A%2F%2Fwww.renren.com%2Fhome";
                //第一次POST请求   
                string postdata = "email=" + UserName.Replace("@", "%40") + "&password=" + PassWord + "&icode=" + "&origURL=" + HostUrl + "&domain=renren.com" + "&key_id=&_rtk=2679ea7f";//模拟请求数据，数据样式可以用FireBug插件得到。人人网POST数据时，用户名邮箱中的“@”变为“%40”，所以我们也要作此变化   
                //string LoginUrl = "http://www.renren.com/PLogin.do";
                string LoginUrl = "http://www.renren.com/PLogin.do";
                request = (HttpWebRequest)WebRequest.Create(LoginUrl);//实例化web访问类   
                request.Method = "POST";//数据提交方式为POST   
                //模拟头   
                //request.ContentType = "application/x-www-form-urlencoded";
                request.ContentType = "application/x-www-form-urlencoded";
                byte[] postdatabytes = Encoding.UTF8.GetBytes(postdata);
                request.ContentLength = postdatabytes.Length;
                //request.Referer = "http://www.renren.com/Login.do?rf=r&domain=renren.com&origURL=" + HostUrl;   
                request.AllowAutoRedirect = false;
                request.CookieContainer = cc;
                request.KeepAlive = true;
                //提交请求   
                Stream stream;
                stream = request.GetRequestStream();
                stream.Write(postdatabytes, 0, postdatabytes.Length);
                stream.Close();
                //接收响应   
                response = (HttpWebResponse)request.GetResponse();
                //保存返回cookie   
                response.Cookies = request.CookieContainer.GetCookies(request.RequestUri);
                CookieCollection cook = response.Cookies;
                string strcrook = request.CookieContainer.GetCookieHeader(request.RequestUri);
                Cookiesstr = strcrook;
                //取第一次GET跳转地址   
                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                string content = sr.ReadToEnd();
                response.Close();
                string[] substr = content.Split(new char[] { '"' });
                gethost = substr[1];
            }
            catch (Exception)
            {
                textBox2.Text = "第一次POST出错";
            }            try
            {
                request = (HttpWebRequest)WebRequest.Create(gethost);
                request.Method = "GET";
                request.KeepAlive = true;
                request.Headers.Add("Cookie:" + Cookiesstr);
                request.CookieContainer = cc;
                request.AllowAutoRedirect = false;
                response = (HttpWebResponse)request.GetResponse();
                //设置cookie   
                Cookiesstr = request.CookieContainer.GetCookieHeader(request.RequestUri);
                //取再次跳转链接   
                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                string ss = sr.ReadToEnd();
                string[] substr = ss.Split(new char[] { '"' });
                gethost = substr[1];
                request.Abort();
                sr.Close();
                response.Close();
                textBox3.Text = gethost;
            }
            catch (Exception)
            {
                textBox3.Text = "第一次GET出错";
            }
            try
            {
                //第二次GET请求 
                request = (HttpWebRequest)WebRequest.Create(gethost);                request.Method = "GET";
                request.KeepAlive = true;
                request.Headers.Add("Cookie:" + Cookiesstr);
                request.CookieContainer = cc;
                request.AllowAutoRedirect = false;
                response = (HttpWebResponse)request.GetResponse();                //设置cookie   
                Cookiesstr = request.CookieContainer.GetCookieHeader(request.RequestUri);
                //取再次跳转链接   
                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                //设置cookie   
                Cookiesstr = request.CookieContainer.GetCookieHeader(request.RequestUri);
                request.Abort();
                response.Close();
                HttpWebResponse myResponse = (HttpWebResponse)request.GetResponse();
                StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
                string content = reader.ReadToEnd();
                //Response.Write(content);
                textBox1.Text = content;
            }
            catch (Exception)
            {
                //textBox1.Text="zui hou chu cu le";第二次GET出错   
            }        }