Java获取局域网中所有ip和Mac地址
定义一个Util
public class IpAndMacUtil {
/**
* 获取本机Mac地址
* @param ia
* @return
* @throws SocketException
*/
private static volatile int num = 0;
public static String getLocalMac(InetAddress ia) throws SocketException {
//获取网卡，获取地址
byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
String MAC="";
for (int i = 0; i < mac.length; i++) {
if (i != 0) {
MAC += "-";
}
//字节转换为整数
int temp = mac[i] & 0xff;
String str = Integer.toHexString(temp);
if (str.length() == 1) {
MAC = MAC+"0"+str;
} else {
MAC += str;
}
}
return MAC;
}
/**
* 获得局域网所有的ip
* @return
* @throws IOException
*/
public static List<String> getAllIp() throws IOException {
InetAddress host=InetAddress.getLocalHost();
String hostAddress=host.getHostAddress();
int pos=hostAddress.lastIndexOf(".");
//获得本机ip的网段
String bigNet=hostAddress.substring(0,pos+1);
List<String> ips= Collections.synchronizedList(new ArrayList<>());
for (int i=0;i<=225;i++){
String ip=bigNet+i;
new Thread(()->{
try {
Process process = Runtime.getRuntime().exec("ping "+ip+" -w 280 -n 1");
InputStream inputStream=process.getInputStream();
InputStreamReader inputStreamReader=new InputStreamReader(inputStream,"GBK");
BufferedReader bufferedReader=new BufferedReader(inputStreamReader);
String line=null;
String isActive=null;
while((line=bufferedReader.readLine()) != null) {
if(!line.equals("")){
isActive=bufferedReader.readLine().substring(0,2);
break;
}
}
if(isActive.equals("来自")){
ips.add(ip);
}
}catch (Exception e){
e.printStackTrace();
}
num++;
}).start();
}
while (num!=225) {}
return ips;
}
/**
* 根据ip，获取mac地址
* @param ip
* @return
* @throws Exception
*/
public static String getMacAddress(String ip) throws Exception{
String result = command("ping "+ip+" -n 2");
if(result.contains("TTL")){
result = command("arp -a "+ip);
}
String regExp = "([0-9A-Fa-f]{2})([-:][0-9A-Fa-f]{2}){5}";
Pattern pattern = Pattern.compile(regExp);
Matcher matcher = pattern.matcher(result);
StringBuilder mac = new StringBuilder();
while (matcher.find()) {
String temp = matcher.group();
mac.append(temp);
}
return mac.toString();
}
private static String command(String cmd) throws Exception{
Process process = Runtime.getRuntime().exec(cmd);
process.waitFor();
InputStream in = process.getInputStream();
StringBuilder result = new StringBuilder();
byte[] data = new byte[256];
while(in.read(data) != -1){
String encoding = System.getProperty("sun.jnu.encoding");
result.append(new String(data,encoding));
}
return result.toString();
}
}
service调用util
public List<PadMACReq> queryMAC(){
List<PadMACReq> padMACReq = new ArrayList<>();
try {
//获取本机ip，MAC地址
InetAddress ia = InetAddress.getLocalHost();
String ip=ia.toString().split("/")[1];
PadMACReq localMAC = new PadMACReq(ip, IpAndMacUtil.getLocalMac(ia));
padMACReq.add(localMAC);
//获取局域网ip，MAC地址
List<String> allIp = IpAndMacUtil.getAllIp();
for(int i = 0 ; i < allIp.size() ; i++){
String macAddress = IpAndMacUtil.getMacAddress(allIp.get(i));
if(macAddress.isEmpty()){
continue;
}
PadMACReq macAndIp = new PadMACReq(allIp.get(i),macAddress);
padMACReq.add(macAndIp);
System.out.println("正在获取ip,MAC地址");
}
} catch (Exception e) {
e.printStackTrace();
}
return padMACReq;
}返回类
public class PadMACReq {
/** 终端名称ip*/
private String name;
/** mac地址*/
private String mac;
}文章来源地址https://www.toymoban.com/news/detail-573295.html
文章来源：https://www.toymoban.com/news/detail-573295.html
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