Windows和Linux下 Java开发ping工具类

package com.test.util;

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



public class PingUtils {public static boolean ping(String ip, int pingTimes, int timeOut) {
        BufferedReader in = null;
        String pingCommand = null;
        
        Runtime r = Runtime.getRuntime();
        String osName = System.getProperty("os.name");
        System.out.println(osName);
        if(osName.contains("Windows")) {
            //-n:要发送的回显请求数   -w：每次请求的超时时间
            pingCommand = "ping " + ip + " -n " + pingTimes + " -w " + timeOut;
        }else {
            //linux下： -c是要发送的回显请求数，没有每次请求超时时间
            pingCommand = "ping " + " -c " + pingTimes + " " + ip;
        }
        try {
            Process p = r.exec(pingCommand);
            if(p == null) {
                return false;
            }
　　　　　　　//ping命令使用的是GBK编码
            in = new BufferedReader(new InputStreamReader(p.getInputStream(),"GBK"));
            int connectCount = 0;
            String line = null;
            while((line = in.readLine()) != null) {
                connectCount += getCheckResult(line,osName);
            }
            System.out.println(connectCount);
            
            //只要ping通一次就说明连接成功？
            return connectCount > 0 ;
        } catch(Exception e) {
            e.printStackTrace();
            logger.error("连接设备状态失败：" + e.getMessage());
            return false;
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                logger.error(e.getMessage());
            }
        }
    }
    
    //若含有ttl=64字样,说明已经ping通,返回1,否則返回0.
    private static int getCheckResult(String line, String osName) {
        if(osName.contains("Windows")) {
            if(line.contains("TTL")) {
                return 1;
            }
        }else {
            if(line.contains("ttl")) {
                return 1;
            }
        }
        return 0;
    }
    
    
//    public static void main(String[] args) {
//        ping("127.0.0.1", 4 , 1000);
//        
//    }
    
}

根据IP地址和端口号PING

package com.zit.util;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;

import org.apache.log4j.Logger;


public class PingUtil {

    private static Logger logger = Logger.getLogger(PingUtil.class);
    
    
    public synchronized static boolean ping(String host, int port, int timeOut) {
        boolean flag = false;
        Socket socket = null;
        try {
            socket = new Socket();
            socket.connect(new InetSocketAddress(host.trim(), port), timeOut);
            flag = true;
        } catch (UnknownHostException e) {
            System.out.println(flag);
            e.printStackTrace();
            return false;
        } catch (SocketTimeoutException e) {
            System.out.println(flag);
            e.printStackTrace();
            return false;
        } catch (IOException e) {
            System.out.println(flag);
            e.printStackTrace();
            return false;
        } catch(Exception e) {
            System.out.println(flag);
            e.printStackTrace();
            logger.error("Connect device failed：" + e.getMessage());
            return false;
        } finally {
            try {
                if (socket != null) {
                    socket.close();
                }
            }
            catch (Exception e) {
            }
        }
        System.out.println(flag);
        return flag;
    }
    
    
    
    public static void main(String[] args) {
        ping("10.86.31.47", 80 , 3000);
        
    }
    
}