如何使用Java从URL获取youtube视频ID？

我找到了解决方案..我扩展了该URL ..及其工作..

public static String expandUrl(String shortenedUrl)  {        URL url;        String expandedURL = "";        try { url = new URL(shortenedUrl); // open connection HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY);  // stop following browser redirect httpURLConnection.setInstanceFollowRedirects(false); // extract location header containing the actual destination URL expandedURL = httpURLConnection.getHeaderField("Location"); httpURLConnection.disconnect();        } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace();        }  return expandedURL;    }