Java调用ping命令

package cn.com.songjy;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Ping {

	public static void main(String[] args) throws IOException {
		System.out.println(ping("127.0.0.1", 1));
		System.out.println("************************************");
		System.out.println(ping("www.baidu.com", 35));
	}

	/**
	 * 
	 * @param target_name
	 *            IP地址或域名
	 * @param out_time
	 *            超时间隔，单位为毫秒
	 * @return
	 * @throws IOException
	 */
	public static boolean ping(String target_name, int out_time)
			throws IOException {

		Runtime runtime = Runtime.getRuntime();

		String ping_command = "ping " + target_name + " -w " + out_time;

		System.out.println("命令格式：" + ping_command);

		Process process = runtime.exec(ping_command);

		if (null == process)
			return false;

		BufferedReader bufferedReader = new BufferedReader(
				new InputStreamReader(process.getInputStream(), "GBK"));// windows下编码默认是GBK，Linux是UTF-8

		String line = null;

		while (null != (line = bufferedReader.readLine())) {

			System.out.println(line);

			if (line.startsWith("Reply from"))
				return true;
			if (line.startsWith("来自"))
				return true;
		}

		bufferedReader.close();

		return false;
	}

}
/* 这里只是简单检测是否能通，如果还需要更详细信息可查看ping命令的介绍 */

效果图如下：
[img]http://dl2.iteye.com/upload/attachment/0091/5443/dc40feaa-cd03-3f87-ad6a-74e6005d0b1a.png[/img]

以下来自[url=http://www.zuidaima.com/share/2197410982677504.htm]java Ping域名网络工具类PingUtils.java源代码分享[/url]

package demo;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class PingUtils {

	public static Domain ping(String domian) {
		long start = System.currentTimeMillis();
		Domain result = new Domain();
		try {
			InetAddress address = InetAddress.getByName(domian);
			result.ip = address.getHostAddress();
			result.host = address.getHostName();
			long end = System.currentTimeMillis();
			result.time = (end - start);
		} catch (UnknownHostException e) {
			result.ip = "0.0.0.0";
			result.host = "UNKONW";
		}
		return result;
	}

	public static class Domain {
		String ip;
		String host;
		long time;

		@Override
		public String toString() {
			return String.format("host=%s, ip=%s, time=%s", host, ip, time);
		}
	}

	public static void main(String[] args) {
		Domain domain = ping("www.baidu.com");
		System.out.println(domain);
	}
}

效果如下：
[img]http://dl2.iteye.com/upload/attachment/0106/9914/c0505c2c-f733-3b9e-a24e-5ed323565636.png[/img]

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[img]http://dl2.iteye.com/upload/attachment/0092/8082/5b3732ab-3cb1-3f32-b973-a441de2e3fb8.png[/img]