方法一：Javascript結合系統的ActiveX
優點：無需開發額外的代碼，輕量級的實現。不需要服務器端進行處理，有客戶端自行獲取，傳遞到服務器端，且速度和可靠性都比在服務器端獲取好
缺點：受客服端平臺的限制，如安全級別設置較高，則無常正常執行
具體實現的html和javascript如下：
其實最關鍵的還是用到兩個ActiveX：
<OBJECT id=locator classid=CLSID:76A64158-CB41-11D1-8B02-00600806D9B6 VIEWASTEXT></OBJECT>
<OBJECT id=foo classid=CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223></OBJECT>
不過這兩個ActiveX都是系統自帶，不用去下載或註冊。
<HTML><HEAD><TITLE>WMI Scripting HTML</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo>
document.forms[0].txtMACAddr.value=unescape(MACAddr);
document.forms[0].txtIPAddr.value=unescape(IPAddr);
document.forms[0].txtDNSName.value=unescape(sDNSName);
//document.formbar.submit();
</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;
if(objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined")
IPAddr = objObject.IPAddress(0);
if(objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
sDNSName = objObject.DNSHostName;
}
</SCRIPT>
<META content="MSHTML 6.00.2800.1106" name=GENERATOR></HEAD>
<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 ;
var IPAddr ;
var DomainAddr;
var sDNSName;
service.Security_.ImpersonationLevel=3;
service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
</SCRIPT>
<FORM id=formfoo name=formbar action=NICPost.asp method=post><INPUT value=00:05:5D:0E:C7:FA name=txtMACAddr> <INPUT value=192.168.0.2 name=txtIPAddr> <INPUT value=typ name=txtDNSName> </FORM></BODY></HTML>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo>
document.forms[0].txtMACAddr.value=unescape(MACAddr);
document.forms[0].txtIPAddr.value=unescape(IPAddr);
document.forms[0].txtDNSName.value=unescape(sDNSName);
//document.formbar.submit();
</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;
if(objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined")
IPAddr = objObject.IPAddress(0);
if(objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
sDNSName = objObject.DNSHostName;
}
</SCRIPT>
<META content="MSHTML 6.00.2800.1106" name=GENERATOR></HEAD>
<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 ;
var IPAddr ;
var DomainAddr;
var sDNSName;
service.Security_.ImpersonationLevel=3;
service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
</SCRIPT>
<FORM id=formfoo name=formbar action=NICPost.asp method=post><INPUT value=00:05:5D:0E:C7:FA name=txtMACAddr> <INPUT value=192.168.0.2 name=txtIPAddr> <INPUT value=typ name=txtDNSName> </FORM></BODY></HTML>
方法二：通過插件調用Win32API
優點：成功率較高，不受客戶瀏覽器的限制。
缺點：需客戶端安裝此插件，且只能是Windows系統
具體實現這裏不做說明，不同平臺和語言實現方法各不相同，以上只是舉例Windows系統。
方法三：通過後臺進程調用nbtstat命令
優點：無需額外開發組件，不受客戶端平臺的限制
缺點：受網絡範圍的限制，成功率較低，速度慢。
具體實現原理：通過nbtstat -a IP 命令將對方計算機的信息輸出管道，然後捕獲管道輸出的內容，再通過正則表達式將MAC篩選出來。
C#代碼如下：
using System;using System.Text;using System.Text.RegularExpressions;using System.Diagnostics;public static class CustomerMAC
{
/// <summary>
/// 根據IP獲取客戶端網卡的MAC /// </summary> /// <param name="IP">客戶端IP</param>
/// <returns>網卡MAC</returns> public static string GetCustomerMAC(string IP) { string dirResults = ""; ProcessStartInfo psi = new ProcessStartInfo(); Process proc = new Process(); psi.FileName = "nbtstat"; psi.RedirectStandardInput = false; psi.RedirectStandardOutput = true; psi.Arguments = "-A " + IP; psi.UseShellExecute = false; proc = Process.Start(psi); dirResults = proc.StandardOutput.ReadToEnd(); proc.WaitForExit(); dirResults = dirResults.Replace(" ", "").Replace(" ", "").Replace(" ", ""); Regex reg = new Regex("MAC[ ]{0,}Address[ ]{0,}=[ ]{0,}(?<key>((.)*?))MAC", RegexOptions.IgnoreCase | RegexOptions.Compiled); Match mc = reg.Match(dirResults + "MAC"); if (mc.Success) { return mc.Groups["key"].Value; } else { reg = new Regex("Host not found", RegexOptions.IgnoreCase | RegexOptions.Compiled); mc = reg.Match(dirResults); if (mc.Success) { return "Host not found!"; } else { return ""; } } }
}