Java/JSP获得客户端网卡MAC地址的三种方法解析
从网上查找资料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)
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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);
?? }
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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
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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>
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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
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<%
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">
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?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;
??? }
}
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//?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;
?? }
?
// ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?java
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;
}
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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~?
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http://justsee.iteye.com/blog/803328