浏览器上网页登陆正常跳转，用httphelper跳转返回数据长度为0

≈全风≈

浏览器上网页登陆正常跳转，用httphelper跳转返回数据长度为0，对比了浏览器提交的数据和用httphelper提交的数据是一模一样的，求各位大神提供思路

[C#] 纯文本查看 复制代码

        public static string login(string name ,string pwd)
        {
            HttpHelper http = new HttpHelper();
            System.Net.WebHeaderCollection header = new System.Net.WebHeaderCollection();
            //header.Add("Accept-Encoding: gzip, deflate");
            HttpItem item = new HttpItem()
            {

                URL = "http://www.gxpx365.com/jsp/portal/logining1.jsp",//登陆地址
                Method = "post",//URL     可选项 默认为Get
                Referer = "http://www.gxpx365.com/jsp/portal/index.jsp",//
               ContentType = "application/x-www-form-urlencoded",
                Postdata = String.Format("name={0}&pwd={1}&role=student",name,pwd),
                KeepAlive = true,
                Header = header,
              //  AutoRedirectCookie = true,
               // Allowautoredirect = true,


            };
           
            //得到HTML代码
            //item.Allowautoredirect = true;
            HttpResult result = http.GetHtml(item);
          //  string html = result.Html;
           bool loginrs =  result.Cookie.Contains("USER=");
           string userid = HttpCookieHelper.GetCookieValue("USER", result.Cookie);
           string jid = HttpCookieHelper.GetCookieValue("JSESSIONID",result.Cookie);
           header.Add("Accept-Language:zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3");
           if (loginrs)
           {
               item.URL = "http://www.gxpx365.com/jsp/portal/../../cmd/navigatorcontrol?flag=menu";
               item.Method = "get";
               //item.ContentType = "text/html";
               item.Cookie = string.Format("JSESSIONID={0};USER={1}",jid , userid);
               item.Referer = "http://www.gxpx365.com/jsp/portal/index.jsp";
               item.Header = header;
               item.Accept = "image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, */*";
            
               HttpResult result2 =http.GetHtml(item);
               //getUser(result.Cookie);
               return result.Cookie;
           }
           return null; 
          
        }

≈全风≈

下面的代码直接使用已经登陆的浏览器的cookie来访问也不行，但是用构造器来访问有可以

[C#] 纯文本查看 复制代码

        public static void test() {
            HttpHelper http = new HttpHelper();
            HttpItem item = new HttpItem()
            {
                URL = "http://www.gxpx365.com/jsp/portal/../../cmd/navigatorcontrol?flag=menu",//学习课程地址
                Method = "get",//URL     可选项 默认为Get
                Referer = "http://www.gxpx365.com/jsp/portal/index.jsp",//
                UserAgent = "Mozilla/5.0 (Windows NT 6.1; rv:38.0) Gecko/20100101 Firefox/38.0",
                
                //Cookie = cookie,
                Cookie = "JSESSIONID=EC4DF5551D47FF913A15DBD21D4179AC; USER=8518A8F63A4BAC81F28A7A28AE605580"
            };
           
           HttpResult rs =  http.GetHtml(item);
        
        }