JAVA获取本地,远程macAddress
获取本地macAddress
Java代码
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
Java代码
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 0x01
private 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)
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