Java/JSP獲得用戶端網卡MAC地址的三種方法解析

最後更新：2018-12-03 來源：互聯網

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從網上尋找資料java/jsp獲得用戶端(IE)網卡MAC地址的方法大概有三種。

1、通過命令方式，在用戶端執行Ipconfig 等等

2、通過ActiveX的方法

3、通過向137的連接埠發送查詢指令的方法

簡介：

第一種方法,在真正用到時候不知道為什麼獲得mac地址的指令阻塞了,不往下繼續執行。而且速度是這三種方法中最慢的一種。

代碼如下：

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)) //本機過濾掉
   {
       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);
    }

第二種方法是用ActiveX來獲得,速度比第一種方法快但是必須降低安全設定否則指令碼不被執行

IE設定如下

1.開啟IE瀏覽器
2.工具->Internet選項->安全
3.自訂層級(C)...
4.設定中對未標記為可安全執行指令碼的ActiveX控制項初始化並執行指令碼
選中啟動(不安全)->每次不用點擊"是"按鈕，推薦，當然你的機器不能上互連網否則會有安全問題。
選中提示->每次都得點擊"是"按鈕。
5.點擊"確定"->"確定"按鈕
6.重新啟動IE瀏覽器設定生效

代碼

<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo>
document.forms[0].userMacAddr.value=unescape(MACAddr);
</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">標　識:</td>
<td><input value="no" name="userMacAddr" size="20" style="width:150px" readonly="yes"></td>

第三種方法是用UDP協議來發送查詢mac指令然後傳回值中解析mac。個人認為這是最好的方法（暫時）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=<%=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.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;
    }
}

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