JAVA 获取本地，远程macAddress
获取本地macAddress
import java.io.InputStreamReader;import java.io.LineNumberReader;public class LocalMacAddr{public String getMACAddr(){String mac = "";try{Process process = Runtime.getRuntime().exec("ipconfig /all");InputStreamReader ir = new InputStreamReader(process.getInputStream());LineNumberReader input = new LineNumberReader(ir);String line = null;while ((line = input.readLine()) != null){if (line.indexOf("Physical Address") > 0){mac = line.substring(line.indexOf("-") - 2);}}}catch (Exception e){e.printStackTrace();}return mac;}public static void main(String[] args){LocalMacAddr ma = new LocalMacAddr();System.out.println(ma.getMACAddr());}}?
获取远程macAddress
import java.io.IOException;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;public class RemoteMacAddr{private String sRemoteAddr;private int iRemotePort = 137;private byte[] buffer = new byte[1024];private DatagramSocket ds = null;public RemoteMacAddr(String strAddr) throws Exception{this.sRemoteAddr = strAddr;this.ds = new DatagramSocket();}private DatagramPacket send(byte[] b) throws IOException{DatagramPacket dp = new DatagramPacket(b, b.length, InetAddress.getByName(sRemoteAddr), iRemotePort);ds.send(dp);return dp;}private DatagramPacket receive() throws Exception{DatagramPacket dp = new DatagramPacket(buffer, buffer.length);ds.receive(dp);return dp;}// 询问包结构:// Transaction ID 两字节（16位） 0x00 0x00// Flags 两字节（16位） 0x00 0x10// Questions 两字节（16位） 0x00 0x01// AnswerRRs 两字节（16位） 0x00 0x00// AuthorityRRs 两字节（16位） 0x00 0x00// AdditionalRRs 两字节（16位） 0x00 0x00// Name:array [1..34] 0x20 0x43 0x4B 0x41(30个) 0x00 ;// Type:NBSTAT 两字节 0x00 0x21// Class:INET 两字节（16位）0x00 0x01private byte[] GetQueryCmd() throws Exception{byte[] t_ns = new byte[50];t_ns[0] = 0x00;t_ns[1] = 0x00;t_ns[2] = 0x00;t_ns[3] = 0x10;t_ns[4] = 0x00;t_ns[5] = 0x01;t_ns[6] = 0x00;t_ns[7] = 0x00;t_ns[8] = 0x00;t_ns[9] = 0x00;t_ns[10] = 0x00;t_ns[11] = 0x00;t_ns[12] = 0x20;t_ns[13] = 0x43;t_ns[14] = 0x4B;for (int i = 15; i < 45; i++){t_ns[i] = 0x41;}t_ns[45] = 0x00;t_ns[46] = 0x00;t_ns[47] = 0x21;t_ns[48] = 0x00;t_ns[49] = 0x01;return t_ns;}// 表1 “UDP－NetBIOS－NS”应答包的结构及主要字段一览表// 序号 字段名 长度// 1 Transaction ID 两字节（16位）// 2 Flags 两字节（16位）// 3 Questions 两字节（16位）// 4 AnswerRRs 两字节（16位）// 5 AuthorityRRs 两字节（16位）// 6 AdditionalRRs 两字节（16位）// 7 Name<Workstation/Redirector> 34字节（272位）// 8 Type:NBSTAT 两字节（16位）// 9 Class:INET 两字节（16位）// 10 Time To Live 四字节（32位）// 11 Length 两字节（16位）// 12 Number of name 一个字节（8位）// NetBIOS Name Info 18×Number Of Name字节// Unit ID 6字节（48位private String GetMacAddr(byte[] b) throws Exception{// 获取计算机名//System.out.println(new String(b, 57, 18));//System.out.println(new String(b, 75, 18));//System.out.println(new String(b, 93, 18));int i = b[56] * 18 + 56;String sAddr = "";StringBuffer sb = new StringBuffer(17);// 先从第56字节位置，读出Number Of Names（NetBIOS名字的个数，其中每个NetBIOS Names// Info部分占18个字节）// 然后可计算出“Unit ID”字段的位置＝56＋Number Of// Names×18，最后从该位置起连续读取6个字节，就是目的主机的MAC地址。for (int j = 1; j < 7; j++){sAddr = Integer.toHexString(0xFF & b[i + j]);if (sAddr.length() < 2){sb.append(0);}sb.append(sAddr.toUpperCase());if (j < 6)sb.append('-');}return sb.toString();}private void close(){try{ds.close();}catch (Exception ex){ex.printStackTrace();}}public String GetRemoteMacAddr() throws Exception{byte[] bqcmd = GetQueryCmd();this.send(bqcmd);DatagramPacket dp = this.receive();String smac = GetMacAddr(dp.getData());this.close();return smac;}public static void main(String[] args) throws Exception{RemoteMacAddr addr = new RemoteMacAddr("192.168.1.119");System.out.println(addr.GetRemoteMacAddr());}}?