java 模拟浏览器

public static void DownLoadPages(String urlStr, String outPath)
     {
         int chByte = 0;
         URL url = null;
         HttpURLConnection httpConn = null;
         InputStream in = null;
         FileOutputStream out = null;
         try
         {
             url = new URL(urlStr);
             httpConn = (HttpURLConnection) url.openConnection();
             HttpURLConnection.setFollowRedirects(true);
             httpConn.setRequestMethod("GET");
             httpConn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows 2000)");
            
             // logger.info(httpConn.getResponseMessage());
             in = httpConn.getInputStream();
             out = new FileOutputStream(new File(outPath));
             chByte = in.read();
             while (chByte != -1)
             {
                 out.write(chByte);
 &n