在网上找了很多资料,大部分都比较坑,不是通过dos命令就是用nbtstat -A的方式,后来找到一个有残缺的,大概只能通过web获取
package com.wt.jwzh.common.utils;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
/**
- @date 2018年5月22日 下午12:09:13 * */
public class UdpGetClientMacAddr {
private String sRemoteAddr;
private int iRemotePort=137;
private byte[] buffer = new byte[1024];
private DatagramSocket ds=null;
public UdpGetClientMacAddr(String strAddr) throws Exception{
sRemoteAddr = strAddr;
ds = new DatagramSocket();
}
public final DatagramPacket send(final byte[] bytes) throws IOException {
DatagramPacket dp = new DatagramPacket(bytes,bytes.length,InetAddress.getByName(sRemoteAddr),iRemotePort);
ds.send(dp);
return dp;
}
public final DatagramPacket receive() throws Exception {
DatagramPacket dp = new DatagramPacket(buffer,buffer.length);
ds.receive(dp);
return dp;
}
public 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;
}
public final String GetMacAddr(byte[] brevdata) throws Exception {
// 获取计算机名
int i = brevdata[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 & brevdata[i+j]);
if(sAddr.length() < 2)
{
sb.append(0);
}
sb.append(sAddr.toUpperCase());
if(j < 6) sb.append(':');
}
return sb.toString();
}
public final void close() throws Exception {
ds.close();
}
public final String GetRemoteMacAddr() throws Exception {
byte[] bqcmd = GetQueryCmd();
send(bqcmd);
DatagramPacket dp = receive();
String smac = GetMacAddr(dp.getData());
close();
return smac;
}
}
嗯,求正确的获取方式