用WebRequest登录页面的时候没有登录成功

[bendan999999999]

今天在用WebRequest登录页面的时候总是登录不成功，那个网站是使用aspx做的，我所有控件的值都传了，但是还是登录不了，我在本地测试是可以的，有没有哪位达人可以告诉我，可能是什么方面的问题啊?

[terry_12]

是不是有头验证之类的?

[bendan999999999]

string LOGIN_URL = @"http://www.pdhr.com/login.aspx";
string SECRET_PAGE_URL = "http://www.pdhr.com/enterprise/EnterpriseToday.aspx?MenuID=7";

HttpWebRequest webRequest = WebRequest.Create(LOGIN_URL) as HttpWebRequest;
StreamReader responseReader = new StreamReader(
webRequest.GetResponse().GetResponseStream()
);
string responseData = responseReader.ReadToEnd();
responseReader.Close();

// extract the viewstate value and build out POST data
string viewState = ExtractViewState(responseData);
string postData =
String.Format(
"__VIEWSTATE={0}&UserLogin1:S_tbloginnamee={1}&UserLogin1:S_tbpassword={2}&UserLogin1:loginradio={3}&UserLogin1:S_btconfirm={4}",
viewState, "敏泰", "123456", "S_rbperson", "确 认"
);

// have a cookie container ready to receive the forms auth cookie
CookieContainer cookies = new CookieContainer();
CookieContainer reqcookies = new CookieContainer();

// now post to the login form
webRequest = WebRequest.Create(LOGIN_URL) as HttpWebRequest;
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322)";
webRequest.CookieContainer = cookies;

// write the form values into the request message
StreamWriter requestWriter = new StreamWriter(webRequest.GetRequestStream());
requestWriter.Write(postData);
requestWriter.Close();

// we don't need the contents of the response, just the cookie it issues
webRequest.GetResponse().Close();
CookieCollection cookieheader = webRequest.CookieContainer.GetCookies(new Uri(LOGIN_URL));


// now we can send out cookie along with a request for the protected page
webRequest = WebRequest.Create(SECRET_PAGE_URL) as HttpWebRequest;

webRequest.CookieContainer = cookies;
webRequest.Referer = SECRET_PAGE_URL;
webRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322)";
webRequest.ContentType = "application/x-www-form-urlencoded";
responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream(),Encoding.GetEncoding("gb2312"));
cookieheader = webRequest.CookieContainer.GetCookies(new Uri(SECRET_PAGE_URL));

// and read the response
responseData = responseReader.ReadToEnd();
responseReader.Close();

Response.Write(responseData);

[bendan999999999]

以上是主要代码。

[tangd]

都挺正确的呀.UP一下.