Ping IP通信工具类 - yxbook/notes GitHub Wiki

package cn.com.tooling.utils;

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

/**
 * 网络检查工具类
 * ping  ipaddress 完整返回true在线 false离线
 */
public class PingUtils {

    public static boolean ping(String ipAddress, int pingTimes, int timeOut) {
        BufferedReader in = null;
        String pingCommand;
        Runtime r = Runtime.getRuntime();
        String osName = System.getProperty("os.name");
        if(osName.contains("Windows")){
            pingCommand = "ping " + ipAddress + " -n " + pingTimes    + " -w " + timeOut;
        }else{
            pingCommand = "ping " + " -c " + "4" + " -w " + "2 " + ipAddress;
        }
        try {
            Process p = r.exec(pingCommand);
            if (p == null) {
                return false;
            }
            in = new BufferedReader(new InputStreamReader(p.getInputStream()));
            int connectedCount = 0;
            String line;
            while ((line = in.readLine()) != null) {
                connectedCount += getCheckResult(line,osName);
            }
            return connectedCount >= 2 ? true : false;
        } catch (Exception ex) {
            //出现异常则返回假
            ex.printStackTrace();
            return false;
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    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;
    }

}