一段获得mac的代码
项目在myeclipse自带的tomcat能启动，在tomcat7下启动不了
其实是启动的了，但是localhost 打开没东西。
下面是代码：很简单
jsp:
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"
import="cch.*"
%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML> <HEAD> <TITLE>WMI Scripting HTML </TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2800.1106" name=GENERATOR> </HEAD>
<BODY>
<%
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=<%=smac %> name="userMacAddr" size="20" style="width:150px" readonly="yes">
</BODY>
</HTML>
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;
}
}
