java 获取客户端MAC地址

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
<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo>
document.forms[0].userMacAddr.value=http://blog.soso.com/qz.q/unescape(MACAd dr);
</SCRIPT>
<SCRIPT language=JScript event=OnObjectReady(objObject,objAsyncContext) for=foo>
if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true)
{
if(objObject.MACAddress != null && objObject.MACAddress != "undefined")
MACAddr = objObject.MACAddress;
}
</SCRIPT>
<META content="MSHTML 6.00.2800.1106" name=GENERATOR>
...
<body>
<OBJECT id=locator classid=CLSID:76A64158-CB41-11D1-8B02-00600806D9B6 VIEWASTEXT></OBJECT>
<OBJECT id=foo classid=CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223>< /OBJECT>
<SCRIPT language=JScript>
var service = locator.ConnectServer();
var MACAddr ;
service.Security_.ImpersonationLevel=3;
service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
</SCRIPT>
... <td height="20" align="center">标识:</td>
<td><input value="http://blog.soso.com/qz.q/no" name="userMacAddr" size="20" style="width:150px" readonly="yes"></td>
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();
%>
...
<input value=http://blog.soso.com/qz.q/<%=smac %> 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.getB yName(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;
}
}
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/Pipi0714/archive/2008/11/19/3 333399.aspx

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