每30分钟自动ping一次外部服务器

Question

我在列表中有一组服务器。我想每隔30分钟ping一次这些服务器。我怎么能实现这个。这是一个带java代码的jsp程序。

Answer 1

此代码将在每30分钟后执行以ping到给定的ip

    public boolean ping(String ip) throws IOException, InterruptedException  extends TimerTask {
     public void run{       
     boolean isWindows = System.getProperty("os.name").toLowerCase().contains("win");

            ProcessBuilder processBuilder = new ProcessBuilder("ping", isWindows? "-n" : "-c", "1", ip`enter code here`);
            Process proc = processBuilder.start();
            BufferedReader in =
        new BufferedReader(
        new InputStreamReader(proc.getInputStream()));
        while (true) {
        String line = in.readLine();
        if (line == null)
        break;
        if(line.contains("Destination host unreachable")||line.contains("Request timed out")){

            return false;
            }
        }

            return true;
}

        }
// And From your main() method or any other method
Timer timer = new Timer();
 timer.schedule(new ping(ip), 0, (60*30*1000));