Java/JSP获得客户端网卡MAC地址的三种方法解析

从网上查找资料java/jsp获得客户端(IE)网卡MAC地址的方法大概有三种。

1、通过命令方式，在客户端执行Ipconfig 等等

2、通过ActiveX的方法

3、通过向137的端口发送查询指令的方法

 

简介：

第一种方法,在真正用到时候不知道为什么获得mac地址的指令阻塞了,不往下继续执行。而且速度是这三种方法中最慢的一种。

代码如下：

String sip="";
String smac="";
 sip = request.getHeader("x-forwarded-for");
 if(sip == null ||sip.length() == 0 || "unknown".equalsIgnoreCase(sip))
 {
 sip = request.getHeader("proxy-Client-IP");
 }
 if (sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip))
 {
    sip = request.getHeader("WL-Proxy-Client-IP");
 }  
 if (sip == null ||sip.length() == 0 || "unknown".equalsIgnoreCase(sip))
 {
    sip = request.getRemoteAddr();
 }
 
    if(!"127.0.0.1".equals(sip)) //本机过滤掉
   {
       Process process = Runtime.getRuntime().exec("nbtstat -a " + sip);
       InputStreamReader ir = new InputStreamReader(process.getInputStream());
    LineNumberReader input = new LineNumberReader(ir);
    String line;
  while ((line = input.readLine()) != null)
      if (line.indexOf("MAC Address") > 0)
   {
          smac = line.substring(line.indexOf("-") - 2);
   }

 

第二种方法是用ActiveX来获得,速度比第一种方法快但是必须降低安全设置否则脚本不被执行

  IE设置如下

1.打开IE浏览器
2.工具->Internet选项->安全
3.自定义级别(C)...
4.设置中对未标记为可安全执行脚本的ActiveX控件初始化并执行脚本
   选中启动(不安全)->每次不用点击"是"按钮，推荐，当然你的机器不能上互联网否则会有安全问题。
   选中提示->每次都得点击"是"按钮。
5.点击"确定"->"确定"按钮
6.重新启动IE浏览器设置生效

 

代码

...

...        标　识:
 

 

第三种方法是用UDP协议来发送查询mac指令然后返回值中解析mac。个人认为这是最好的方法（暂时）速度最快

<%
String smac = "";
String sip = request.getHeader("x-forwarded-for");  
if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {  
    sip = request.getHeader("Proxy-Client-IP");  
}  
if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {  
    sip = request.getHeader("WL-Proxy-Client-IP");  
}  
if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {  
    sip = request.getRemoteAddr();  
}  
UdpGetClientMacAddr umac = new UdpGetClientMacAddr(sip);
smac = umac.GetRemoteMacAddr();
%>

...

name="userMacAddr" size="20" style="width:150px" readonly="yes">

 

UdpGetClientMacAddr.java

package cch;
import java.io.*;
import java.net.*;

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();
    }
   
    protected final DatagramPacket send(final byte[] bytes) throws IOException {
     DatagramPacket dp = new DatagramPacket(bytes,bytes.length,InetAddress.getByName(sRemoteAddr),iRemotePort);
     ds.send(dp);
        return dp;
    }
   
    protected final DatagramPacket receive() throws Exception {
     DatagramPacket dp = new DatagramPacket(buffer,buffer.length);
     ds.receive(dp);
     return dp;
    }
   
    protected 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;
    }
   
    protected final String GetMacAddr(byte[] brevdata) throws Exception {
     
     int i = brevdata[56] * 18 + 56;
        String sAddr="";
        StringBuffer sb = new StringBuffer(17);
               
        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() {
     try
     {
      ds.close();
     }
     catch (Exception ex){
      ex.printStackTrace();
     }
    }
   
    public final String GetRemoteMacAddr() throws Exception {
     byte[] bqcmd = GetQueryCmd();
     send(bqcmd);
     DatagramPacket dp = receive();
        String smac = GetMacAddr(dp.getData());
        close();
       
        return smac;
    }
}