download html page

Hi all, I want to download an html page from internet with a login form.

I use this code:

URL url = new URL("http://site.com/ligin?user=user&pass=pass");
downloadFromUrl(url, "file.txt", "Mozilla")

public static void downloadFromUrl (URL url, String localFilename,
String userAgent)
    throws IOException
{
    InputStream is = null;
    FileOutputStream fos = null;

    try
    {
        URLConnection urlConn = url.openConnection ();
        urlConn.setRequestProperty ("User-Agent", userAgent);

        is = urlConn.getInputStream ();
        fos = new FileOutputStream (localFilename);

        byte[] buffer = new byte[1024];
        int len;

        while ((len = is.read (buffer)) > 0)
            fos.write (buffer, 0, len);
    }
    finally
    {
        try {
            if (is != null)
                is.close ();
        } finally {
            if (fos != null)
                fos.close ();
        }
    }
}

the problem is that the file dowloaded contains this:

<meta http-equiv="refresh" content="0;
url=wbc_skplogin?wc_dbos=&wc_retpath=wbc_skpcreditcheck">

a redirect!!!

How can save the "wbc_skpcreditcheck" page?
If I dowload that directly the website don't login me...

Thanks!!!