Java/JSP獲得客戶端網卡MAC地址的三種方法解析


java/jsp獲得客戶端(IE)網卡MAC地址的方法大概有三種。

1、通過命令方式,在客戶端執行Ipconfig 等等。(java/jsp)

2、通過ActiveX的方法。(jsp)

3、通過向137的端口發送查詢指令的方法。(java/jsp)

 

簡介:

第一種方法,在真正用到時候不知道為什么獲得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置否則腳本不被執行

IE設置如下

1.打開IE瀏覽器
2.工具->Internet選項->安全
3.自定義級別(C)...
4.設置中對未標記為可安全執行腳本的ActiveX控件初始化並執行腳本
   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聯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瀏覽器設置生效

 

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指令然后返回值中解析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 zyj;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

/**
 * 主機A向主機B發送“UDP-NetBIOS-NS”詢問包,即向主機B的137端口,發Query包來詢問主機B的NetBIOS Names信息。
 * 其次,主機B接收到“UDP-NetBIOS-NS”詢問包,假設主機B正確安裝了NetBIOS服務........... 而且137端口開放,
        則主機B會向主機A發送一個“UDP-NetBIOS-NS”應答包,即發Answer包給主機A。 * 並利用UDP(NetBIOS Name Service)來快速獲取遠程主機MAC地址的方法 * *
@author WINDY */ 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; } // 詢問包結構: // Transaction ID 兩字節(16位) 0x00 0x00 // Flags 兩字節(16位) 0x00 0x10 // Questions 兩字節(16位) 0x00 0x01 // AnswerRRs 兩字節(16位) 0x00 0x00 // AuthorityRRs 兩字節(16位) 0x00 0x00 // AdditionalRRs 兩字節(16位) 0x00 0x00 // Name:array [1..34] 0x20 0x43 0x4B 0x41(30個) 0x00 ; // Type:NBSTAT 兩字節 0x00 0x21 // Class:INET 兩字節(16位)0x00 0x01 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; } // 表1 “UDP-NetBIOS-NS”應答包的結構及主要字段一覽表 // 序號 字段名 長度 // 1 Transaction ID 兩字節(16位) // 2 Flags 兩字節(16位) // 3 Questions 兩字節(16位) // 4 AnswerRRs 兩字節(16位) // 5 AuthorityRRs 兩字節(16位) // 6 AdditionalRRs 兩字節(16位) // 7 Name<Workstation/Redirector> 34字節(272位) // 8 Type:NBSTAT 兩字節(16位) // 9 Class:INET 兩字節(16位) // 10 Time To Live 四字節(32位) // 11 Length 兩字節(16位) // 12 Number of name 一個字節(8位) // NetBIOS Name Info 18×Number Of Name字節 // Unit ID 6字節(48位 protected final String GetMacAddr(byte[] brevdata) throws Exception { // 獲取計算機名 int i = brevdata[56] * 18 + 56; String sAddr=""; StringBuffer sb = new StringBuffer(17); // 先從第56字節位置,讀出Number Of Names(NetBIOS名字的個數,其中每個NetBIOS Names Info部分占18個字節) // 然后可計算出“Unit ID”字段的位置=56+Number Of Names×18,最后從該位置起連續讀取6個字節,就是目的主機的MAC地址。 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; } } // 獲取真實IP的方法(). jsp public String getIpAddr(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("Proxy-Client-IP"); } if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("WL-Proxy-Client-IP"); } if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } return ip; }

 

補充:
關於獲取IP地址的方式,最近在linux下有一個教訓,如果單純通過InetAddress來獲取IP地址,就會出現在不同的機器上IP地址不同的問題。
InetAddress.getLocalHost().getAddress() 實際上是根據hostname來獲取IP地址的。linux系統在剛剛裝完默認的hostname是localhost,所以通過上面代碼獲取到的本機 ip就是127.0.0.1, 相對應,比如我的hostname就是rjlin.atsig.com 返回的ip地址確是atsig.com的地址。暫時采用下面代碼來處理,當然還不夠靈活:

 

public static byte[] getIp() throws UnknownHostException {
byte[] b = InetAddress.getLocalHost().getAddress();
Enumeration allNetInterfaces = null;
try {
allNetInterfaces = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
e.printStackTrace();
}
InetAddress ip = null;
NetworkInterface netInterface = null;
while (allNetInterfaces.hasMoreElements()) {
netInterface = (NetworkInterface) allNetInterfaces.nextElement();
if (netInterface.getName().trim().equals("eth0")){
Enumeration addresses = netInterface.getInetAddresses();
while (addresses.hasMoreElements()) {
ip = (InetAddress) addresses.nextElement();
}
break;
}
}
if (ip != null && ip instanceof Inet4Address) {
return b = ip.getAddress();
}
return b;
}

 

mac地址是可以通過注冊表修改的,不建議以此來作為限制依據~

 


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