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(). 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; }
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~