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.

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 getIPs()

{

List list = new ArrayList();

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 getHostnames(List ips){

Map map = new HashMap();

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

{ =BY-=all-routers.mcast.net, =xxx-PC, =igmp.mcast.net, =xxx-PC, =xxx-PC}