哥，如何运用java取得某一链接网址中所有的链接网址并存储？然后我再调用HttpURLConnection判断链接有效性

你看这个有用吗?
public static void main(String[] args) throws Exception {
 URL url = new URL("http://www.baidu.com");
 InputStream ins = url.openConnection().getInputStream();
         BufferedReader reader = new BufferedReader(new InputStreamReader(ins));
         String serverReturnData = reader.readLine();
         String allData = "";
         while((serverReturnData = reader.readLine()) != null){
         allData +=serverReturnData;
         }
         String regex = "(https?://[-a-z0-9_.:]+[-\\w~`!@#$%^&*()_+=\\|{};:/?,]*)\'";
         Matcher m = Pattern.compile(regex).matcher(allData);
         while(m.find()){
         System.out.println(m.group(1));
         }
         
 }