每30分钟自动Ping一台外部服务器

Question

我在列表中有一组服务器。我想每隔30分钟ping这些服务器。我可以如何实现这一点。它是一个带有java代码的jsp程序。

Answer 1

这个代码将每30分钟后，再执行对ping命令给定的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));