java根据百度url获取真正的网页地址

/**
* 根据百度url,获取原本url
* @throws IOException
* @throws HttpException
* */
public static  String getRealUrlFromBaiduUrl(String url) {
        Connection.Response res = null;
        int itimeout = 60000;
        try {
            res = Jsoup.connect(url).timeout(itimeout).method(Connection.Method.GET).followRedirects(false).execute();
            return res.header("Location");
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
}