Pinger

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;


public class Pinger{
    // IP地址
    private String ip;
    
    // Ping次数    
    private int timesNum;
    
    /**
     * 构造函数
     * @param ip
     * @param timesNum
     */
    public Pinger(String ip,int timesNum){
        this.ip=ip;
        this.timesNum=timesNum;
    }
    
    /**
     * ping次数和响应数相等算ping通
     * @return
     * @throws Exception
     */
    public boolean isPass() throws Exception{
        String destIp=ip;
        int maxCount=timesNum;
        
        LineNumberReader input = null;
        try {
            // 根据操作系统组合命令
            String osName = System.getProperties().getProperty("os.name");
            String pingCmd = null;
            if (osName.startsWith("Windows")) {
                pingCmd = "cmd /c ping -n {0} {1}";
                pingCmd = MessageFormat.format(pingCmd, maxCount, destIp);
            } else if (osName.startsWith("Linux")) {
                pingCmd = "ping -c {0} {1}";
                pingCmd = MessageFormat.format(pingCmd, maxCount, destIp);
            } else {
                throw new Exception("not support OS");
            }
            
            // ping完得到响应
            Process process = Runtime.getRuntime().exec(pingCmd);
            InputStreamReader ir = new InputStreamReader(process
                    .getInputStream());
            input = new LineNumberReader(ir);
            String line;
            List<String> reponse = new ArrayList<String>();

            while ((line = input.readLine()) != null) {
                if (!"".equals(line)) {
                    reponse.add(line);
                    // System.out.println("====:" + line);
                }
            }
            
            // 分析响应
            if (osName.startsWith("Windows")) {
                return parseWindowsMsg(reponse, maxCount)==maxCount;
            } else if (osName.startsWith("Linux")) {
                return parseLinuxMsg(reponse, maxCount)==maxCount;
            }

        } catch (IOException e) {
            System.out.println("IOException   " + e.getMessage());

        } finally {
            if (null != input) {
                try {
                    input.close();
                } catch (IOException ex) {
                    System.out.println("close error:" + ex.getMessage());

                }
            }
        }
        
        return false;
    }
    
    private int parseWindowsMsg(List<String> reponse, int total) {
        int countTrue = 0;
        int countFalse = 0;
        for (String str : reponse) {
            if (str.startsWith("来自") || str.startsWith("Reply from")) {
                countTrue++;
            }
            if (str.startsWith("请求超时") || str.startsWith("Request timed out")) {
                countFalse++;
            }
        }
        return countTrue;
    }

    private int parseLinuxMsg(List<String> reponse, int total) {
        int countTrue = 0;
        for (String str : reponse) {
            if (str.contains("bytes from") && str.contains("icmp_seq=")) {
                countTrue++;
            }
        }
        return countTrue;
    }
    
    public static void main(String[] args) throws Exception{
        Pinger p=new Pinger("123.abc.xyz.com",5);
        
        System.out.println(p.isPass());
    }
}