java使用fping进行批量ping域名

前几天接到个任务,要求批量ping域名,找了网上好多资料都没有好的方法,只能自己试着用外部工具fping辅助,做了一个工具类,用了下还可以

首先安装fping

yum -y install fping

然后给普通用户权限

chown root:root /usr/local/sbin/fping

chmod u+s /usr/local/sbin/fping

下面是工具类

public class NetUtils {

    private static final String ALIVE = "alive";
    private static final String FPING = "fping ";
    private static final String IS = " is ";
    private static final String COLON = ":";
    private static final String CHARSET = "UTF-8";
    private static final String UNREACHABLE= "unreachable";


    //单独ping一个的,格式 fping baidu.com
    public static boolean ping(String ipAddress) {
        BufferedReader br = null;
        String pingCommand = FPING + ipAddress;
        try {
            Process p = Runtime.getRuntime().exec(pingCommand);
            br = new BufferedReader(new InputStreamReader(p.getInputStream(), CHARSET));
            String line = null;
            while ((line = br.readLine()) != null) {
                if (line.contains(ALIVE)) {
                    return true;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return false;
    }

   //ping多个的,格式 fping baidu.com douyin.com 12.45.43.211  多个域名网址中间以空格隔开,返回的是域名是否在线: key<域名> value   
    public static Map fPing(String ipAddress) {
        BufferedReader br = null;
        String pingCommand = FPING + ipAddress;
        HashMap map = new HashMap<>();
        try {
            Process p = Runtime.getRuntime().exec(pingCommand);
            br = new BufferedReader(new InputStreamReader(p.getInputStream(), CHARSET));
            String line = null;
            while ((line = br.readLine()) != null) {
                 if (line.contains(IS)) {
                     String[] split = line.split(IS);
                     map.put(split[0], split[1]);
                  }else {
                     String[] split = line.split(COLON);
                     map.put(split[0],UNREACHABLE);
                 }

            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return map;
    }
}

试了一下,200多个IP/域名,用javaping跑了5分钟,这个用了30秒