struts2中怎么在JSP页面获取到客户端的ip地址和mac地址然后传给后台的action

struts2中怎么在JSP页面获取到客户端的ip地址和mac地址然后传给后台的action知道的回答一下,最好附上直接能运行的代码,谢谢了

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网上找的代码,本机测试过,在IE下好用,Firefox上不好用.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
   <title>JS获取客户端MAC地址</title>
   <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
   <meta name="generator" content="editplus" />
   <meta name="author" content="" />
   <meta name="keywords" content="" />
   <meta name="description" content="" />
   <style type="text/css">

   </style>
     <script event="OnObjectReady(objObject,objAsyncContext)" for="foo">
         if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true) {
             if(objObject.MACAddress != null && objObject.MACAddress != "undefined" && objObject.DNSServerSearchOrder!=null)
                 MACAddr = objObject.MACAddress;
             if(objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined" && objObject.DNSServerSearchOrder!=null)
                 IPAddr = objObject.IPAddress(0);
             if(objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
                 sDNSName = objObject.DNSHostName;
         }
     </script>
     <script type="text/javascript">
         var MACAddr ;
         var IPAddr ;
         var DomainAddr;
         var sDNSName;
         function init() {
             var service = locator.ConnectServer();
             service.Security_.ImpersonationLevel=3;
             service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
         }

         function getMac() {
             document.getElementById('txtMac').value = unescape(MACAddr);
         }
     </script>
  </head>

  <body onload="init()">
     <object id="locator" classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6" VIEWASTEXT></object>
     <object id="foo" classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223"></object>

     <input type="text" id="txtMac" />
     <input type="button" id="btn" value="获取Mac地址" onclick="getMac();" />
  </body>
</html>
我测试了一下点获取Mac地址出现undefined 不行啊
我测试了一下点获取Mac地址出现undefined 不行啊
多谢了,已经采用了你的方法,已成功应用到系统中,但是只能是IE和安全级别要设置一下,有点麻烦,如是firfox客户端有用就完美了
Mac地址属于个人隐私信息,如果对外公开可能会有安全隐患,所以需要客户端允许的情况下才能获得.