Java 调用window下的ping命令实现ping的函数封装

/**
* 能否ping通IP地址
* @param server IP地址
* @param timeout 超时时长
* @return true能ping通
*/
public static boolean pingServer(String server, int timeout) {
BufferedReader in = null;
Runtime r = Runtime.getRuntime();

String pingCommand = "ping " + server + " -n 1 -w " + timeout;
try {
Process p = r.exec(pingCommand);
if (p == null) {
return false;
}
in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
if (line.startsWith("Reply from")||line.contains("TTL")) {
return true;
}
}

} catch (Exception ex) {
ex.printStackTrace();
return false;
} finally {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}