java 获取局域网中的所有主机名和IP地址

来源：互联网发布：苹果手机qq数据备份编辑：程序博客网时间：2024/04/28 02:55

DOS命令

命令意义 net view 获取局域网中的所有主机名 ipconfig -all 获取本地IP，主机名，MAC地址 arp -a 获取本局域网中的所有IP地址和物理地址 ping -a x.x.x.x 获取x.x.x.x的主机名 nbtstat -a 主机名获取MAC地址

java exec

执行外部命令

String command = "net view"Runtime r = Runtime.getRuntime();Process p = r.exec(command);BufferedReader br = new BufferedReader(new InputStreamReader(p                    .getInputStream()));

提取局域网IP

public static List<String>  getIPs()    {        List<String> list = new ArrayList<String>();        boolean flag = false;        int count=0;        Runtime r = Runtime.getRuntime();        Process p;        try {            p = r.exec("arp -a");            BufferedReader br = new BufferedReader(new InputStreamReader(p                    .getInputStream()));            String inline;            while ((inline = br.readLine()) != null) {                if(inline.indexOf("接口") > -1){                    flag = !flag;                    if(!flag){                        //碰到下一个"接口"退出循环                        break;                    }                }                if(flag){                    count++;                    if(count > 2){                        //有效IP                        String[] str=inline.split(" {4}");                        list.add(str[0]);                    }                }                System.out.println(inline);            }            br.close();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        System.out.println(list);        return list;    }

根据IP提取主机名

public static Map<String,String> getHostnames(List<String> ips){        Map<String,String> map = new HashMap<String,String>();        System.out.println("正在提取hostname...");        for(String ip : ips){            String command = "ping -a " + ip;            Runtime r = Runtime.getRuntime();            Process p;            try {                p = r.exec(command);                BufferedReader br = new BufferedReader(new InputStreamReader(p                        .getInputStream()));                String inline;                while ((inline = br.readLine()) != null) {                    if(inline.indexOf("[") > -1){                        int start = inline.indexOf("Ping ");                        int end = inline.indexOf("[");                        String hostname = inline.substring(start+"Ping ".length(),end-1);                        System.out.println(hostname);                        map.put(ip,hostname);                    }                }                br.close();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }        System.out.println("提取结束！");        return map;    }

结果

{  222.26.28.51=BY-201507012043,   224.0.0.2=all-routers.mcast.net,   222.26.28.20=xxx-PC,   224.0.0.22=igmp.mcast.net,   222.26.28.218=xxx-PC,   222.26.28.223=xxx-PC}

0 0