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Java/JSP获得客户端网卡MAC地址的三种方法解析

java/jsp获得客户端(IE)网卡MAC地址的方法大概有三种。

1、通过命令方式,在客户端执行Ipconfig 等等。(java/jsp)

2、通过ActiveX的方法。(jsp)

3、通过向137的端口发送查询指令的方法。(java/jsp)

 

简介:

第一种方法,在真正用到时候不知道为什么获得mac地址的指令阻塞了,不往下继续执行。而且速度是这三种方法中最慢的一种。

代码如下:

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)) //本机过滤掉   {       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);   } 

第二种方法是用ActiveX来获得,速度比第一种方法快但是必须降低安全设置否则脚本不被执行

IE设置如下

1.打开IE浏览器
2.工具->Internet选项->安全
3.自定义级别(C)...
4.设置中对未标记为可安全执行脚本的ActiveX控件初始化并执行脚本
   选中启动(不安全)->每次不用点击"是"按钮,推荐,当然你的机器不能上互联网否则会有安全问题。
   选中提示->每次都得点击"是"按钮。
5.点击"确定"->"确定"按钮
6.重新启动IE浏览器设置生效

 

代码

<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">标 识:</td><td><input value="no" name="userMacAddr" size="20" style="width:150px" readonly="yes"></td>

 

第三种方法是用UDP协议来发送查询mac指令然后返回值中解析mac。个人认为这是最好的方法(暂时)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;/** * 主机A向主机B发送“UDP-NetBIOS-NS”询问包,即向主机B的137端口,发Query包来询问主机B的NetBIOS Names信息。 * 其次,主机B接收到“UDP-NetBIOS-NS”询问包,假设主机B正确安装了NetBIOS服务........... 而且137端口开放,
        则主机B会向主机A发送一个“UDP-NetBIOS-NS”应答包,即发Answer包给主机A。 * 并利用UDP(NetBIOS Name Service)来快速获取远程主机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; } // 询问包结构: // Transaction ID 两字节(16位) 0x00 0x00 // Flags 两字节(16位) 0x00 0x10 // Questions 两字节(16位) 0x00 0x01 // AnswerRRs 两字节(16位) 0x00 0x00 // AuthorityRRs 两字节(16位) 0x00 0x00 // AdditionalRRs 两字节(16位) 0x00 0x00 // Name:array [1..34] 0x20 0x43 0x4B 0x41(30个) 0x00 ; // Type:NBSTAT 两字节 0x00 0x21 // Class:INET 两字节(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”应答包的结构及主要字段一览表 // 序号 字段名 长度 // 1 Transaction ID 两字节(16位) // 2 Flags 两字节(16位) // 3 Questions 两字节(16位) // 4 AnswerRRs 两字节(16位) // 5 AuthorityRRs 两字节(16位) // 6 AdditionalRRs 两字节(16位) // 7 Name<Workstation/Redirector> 34字节(272位) // 8 Type:NBSTAT 两字节(16位) // 9 Class:INET 两字节(16位) // 10 Time To Live 四字节(32位) // 11 Length 两字节(16位) // 12 Number of name 一个字节(8位) // NetBIOS Name Info 18×Number Of Name字节 // Unit ID 6字节(48位 protected final String GetMacAddr(byte[] brevdata) throws Exception { // 获取计算机名 int i = brevdata[56] * 18 + 56; String sAddr=""; StringBuffer sb = new StringBuffer(17); // 先从第56字节位置,读出Number Of Names(NetBIOS名字的个数,其中每个NetBIOS Names Info部分占18个字节) // 然后可计算出“Unit ID”字段的位置=56+Number Of Names×18,最后从该位置起连续读取6个字节,就是目的主机的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; }} // 获取真实IP的方法(). jsppublic 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; }

 

补充:
关于获取IP地址的方式,最近在linux下有一个教训,如果单纯通过InetAddress来获取IP地址,就会出现在不同的机器上IP地址不同的问题。
InetAddress.getLocalHost().getAddress() 实际上是根据hostname来获取IP地址的。linux系统在刚刚装完默认的hostname是localhost,所以通过上面代码获取到的本机ip就是127.0.0.1, 相对应,比如我的hostname就是rjlin.atsig.com 返回的ip地址确是atsig.com的地址。暂时采用下面代码来处理,当然还不够灵活:

 

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地址是可以通过注册表修改的,不建议以此来作为限制依据~

 

Java/JSP获得客户端网卡MAC地址的三种方法解析