多线程PING IP+端口号！（源码），附非多线程时间测试对比。。

闲来无事写一个多线程PING IP+端口号的demo，希望可以得到大家的指教，如有不足请指出，万分感谢！！！

package com.card.test;import java.io.IOException;import java.net.InetSocketAddress;import java.net.Socket;import java.net.SocketAddress;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.concurrent.CountDownLatch;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class MultithreadPingIp {private List<Map<String, String>> ipList; // 需验证的IP+端口集合private int threadNum = 0; // 线程数public MultithreadPingIp(List<Map<String, String>> ipList, int threadNum) {this.ipList = ipList;this.threadNum = threadNum;}public MultithreadPingIp() {}public void startPing() {// 创建一个线程池，多个线程同步执行final CountDownLatch cdAnswer = new CountDownLatch(threadNum);ExecutorService pool = Executors.newFixedThreadPool(threadNum);for (int i = 0; i < ipList.size(); i++) {pool.execute(new PingRunner(ipList.get(i), cdAnswer));}try {System.out.println("线程等待开始=" + cdAnswer.getCount());cdAnswer.await();System.out.println("线程等待结束=" + cdAnswer.getCount());} catch (InterruptedException e) {}pool.shutdown();try {while (!pool.isTerminated()) {Thread.sleep(100);}} catch (Exception e) {e.printStackTrace();}}private class PingRunner implements Runnable {private String host = null;private int port = 0;private Map<String, String> hostList; // 需验证的IPprivate CountDownLatch cdAnswer;public PingRunner(Map<String, String> hostList, CountDownLatch cdAnswer) {this.hostList = hostList;this.cdAnswer = cdAnswer;}Socket s = new Socket();@Overridepublic void run() {host = hostList.get("addr");port = Integer.valueOf(hostList.get("port"));SocketAddress add = new InetSocketAddress(host, port);try {s.connect(add, 3000);// 超时3秒System.out.println("IP:" + host + "正常");} catch (IOException e) {System.out.println("IP:" + host + "超时");} finally {try {s.close();cdAnswer.countDown();} catch (IOException e) {}}}}public static void main(String[] args) {long currentTime = System.currentTimeMillis();SimpleDateFormat formatter = new SimpleDateFormat("HH时mm分ss秒");Date date = new Date(currentTime);System.out.println("多线程测试：Ping开始时间：" + formatter.format(date));List<Map<String, String>> allIp = new ArrayList<Map<String, String>>();Map<String, String> m = new HashMap<String, String>();Map<String, String> m1 = new HashMap<String, String>();Map<String, String> m2 = new HashMap<String, String>();Map<String, String> m3 = new HashMap<String, String>();Map<String, String> m4 = new HashMap<String, String>();Map<String, String> m5 = new HashMap<String, String>();m.put("addr", "192.168.1.1");m.put("port", "8080");m1.put("addr", "192.168.1.2");m1.put("port", "8080");m2.put("addr", "192.168.0.110");m2.put("port", "1521");m3.put("addr", "192.168.0.111");m3.put("port", "1521");m4.put("addr", "192.168.0.112");m4.put("port", "1521");m5.put("addr", "192.168.0.113");m5.put("port", "1521");allIp.add(m);allIp.add(m1);allIp.add(m2);allIp.add(m3);allIp.add(m4);allIp.add(m5);MultithreadPingIp batchPingIpThread = new MultithreadPingIp(allIp,allIp.size());//多线程测试PING IP+端口时间batchPingIpThread.startPing();//非多线程测试PING IP+端口时间//batchPingIpThread.ipConnec(allIp);long current = System.currentTimeMillis();Date end = new Date(current);System.out.println("多线程测试：Ping结束时间：" + formatter.format(end));}//非多线程实现public void ipConnec(List<Map<String, String>> list) {for (int i = 0; i < list.size(); i++) {Socket s = new Socket();String host = list.get(i).get("addr");int port = Integer.valueOf(list.get(i).get("port"));SocketAddress add = new InetSocketAddress(host, port);try {try {s.connect(add, 3000);// 超时3秒System.out.println("Ip:" + host + "正常！");} catch (IOException e) {System.out.println("Ip:" + host + "超时！");}} finally {try {s.close();} catch (IOException e) {}}}}}

多线程测试结果：
    Ping开始时间：18时34分05秒
    线程等待开始=6
    IP:192.168.0.110正常
    IP:192.168.1.1超时
    IP:192.168.0.112超时
    IP:192.168.1.2超时
    IP:192.168.0.111超时
    IP:192.168.0.113超时
    线程等待结束=0
    Ping结束时间：18时34分08秒

    可以看出ping六个IP相差3秒时间

单线程测试结果：

   Ping开始时间：18时45分22秒
   Ip:192.168.1.1超时！
   Ip:192.168.1.2超时！
   Ip:192.168.0.110正常！
   Ip:192.168.0.111超时！
   Ip:192.168.0.112超时！
   Ip:192.168.0.113超时！
   Ping结束时间：18时45分33秒

   可以看出ping六个IP相差11秒时间