Java獲取公網ip

public static void main(String[] args) {
        String inputLine = "";
        String read = "";
        String ip = "";
        try {
            URL url = new URL("http://checkip.dyndns.org/");
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            while ((read = in.readLine()) != null) {
                inputLine += read;
            }
            System.out.println(inputLine);
            String[] strs = inputLine.split(":");
            ip = strs[1].split("<")[0];
            System.out.println(ip);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

http://checkip.dyndns.org/   不夠穩定
可以換http://www.myip.cn/
String[] strs = inputLine.split("您的IP地址:");