java实现获取用户的MAC地址

      2019-12-16 11:43      JAVA编程
本文给大家汇总介绍了下使用java实现获取客户端用户的MAC地址的方法,当然最后一种更全面一些,有需要的小伙伴们可以根据需求自由选择。

方法一:将本机地址与局域网内其他机器区分开来

/**   * 根据IP地址获取mac地址   * @param ipAddress 127.0.0.1   * @return   * @throws SocketException   * @throws UnknownHostException   */  public static String getLocalMac(String ipAddress) throws SocketException,      UnknownHostException {    // TODO Auto-generated method stub    String str = "";    String macAddress = "";    final String LOOPBACK_ADDRESS = "127.0.0.1";    // 如果为127.0.0.1,则获取本地MAC地址。    if (LOOPBACK_ADDRESS.equals(ipAddress)) {      InetAddress inetAddress = InetAddress.getLocalHost();      // 貌似此方法需要JDK1.6。      byte[] mac = NetworkInterface.getByInetAddress(inetAddress)          .getHardwareAddress();      // 下面代码是把mac地址拼装成String      StringBuilder sb = new StringBuilder();      for (int i = 0; i < mac.length; i++) {        if (i != 0) {          sb.append("-");        }        // mac[i] & 0xFF 是为了把byte转化为正整数        String s = Integer.toHexString(mac[i] & 0xFF);        sb.append(s.length() == 1 ? 0 + s : s);      }      // 把字符串所有小写字母改为大写成为正规的mac地址并返回      macAddress = sb.toString().trim().toUpperCase();      return macAddress;    } else {      // 获取非本地IP的MAC地址      try {        System.out.println(ipAddress);        Process p = Runtime.getRuntime()            .exec("nbtstat -A " + ipAddress);        System.out.println("===process=="+p);        InputStreamReader ir = new InputStreamReader(p.getInputStream());                 BufferedReader br = new BufferedReader(ir);               while ((str = br.readLine()) != null) {          if(str.indexOf("MAC")>1){            macAddress = str.substring(str.indexOf("MAC")+9, str.length());            macAddress = macAddress.trim();            System.out.println("macAddress:" + macAddress);            break;          }        }        p.destroy();        br.close();        ir.close();      } catch (IOException ex) {      }      return macAddress;    }  }

我们再来看下方法二:

package com.alpha.test;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.LineNumberReader;public class GetMac {/** * java获取客户端网卡的MAC地址 *  * @param args */public static void main(String[] args) {GetMac get = new GetMac();System.out.println("1="+get.getMAC());System.out.println("2="+get.getMAC("127.0.0.1"));}// 1.获取客户端ip地址( 这个必须从客户端传到后台):// jsp页面下,很简单,request.getRemoteAddr() ;// 因为系统的VIew层是用JSF来实现的,因此页面上没法直接获得类似request,在bean里做了个强制转换// public String getMyIP() {// try {// FacesContext fc = FacesContext.getCurrentInstance();// HttpServletRequest request = (HttpServletRequest) fc// .getExternalContext().getRequest();// return request.getRemoteAddr();// } catch (Exception e) {// e.printStackTrace();// }// return "";// }// 2.获取客户端mac地址// 调用window的命令,在后台Bean里实现 通过ip来获取mac地址。方法如下:// 运行速度【快】public String getMAC() {String mac = null;try {Process pro = Runtime.getRuntime().exec("cmd.exe /c ipconfig/all");InputStream is = pro.getInputStream();BufferedReader br = new BufferedReader(new InputStreamReader(is));String message = br.readLine();int index = -1;while (message != null) {if ((index = message.indexOf("Physical Address")) > 0) {mac = message.substring(index + 36).trim();break;}message = br.readLine();}System.out.println(mac);br.close();pro.destroy();} catch (IOException e) {System.out.println("Can't get mac address!");return null;}return mac;}// 运行速度【慢】public String getMAC(String ip) {String str = null;String macAddress = null;try {Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);InputStreamReader ir = new InputStreamReader(p.getInputStream());LineNumberReader input = new LineNumberReader(ir);for (; true;) {str = input.readLine();if (str != null) {if (str.indexOf("MAC Address") > 1) {macAddress = str.substring(str.indexOf("MAC Address") + 14);break;}}}} catch (IOException e) {e.printStackTrace(System.out);return null;}return macAddress;}}

方法三,更精简一些

import java.io.IOException;import java.io.InputStreamReader;import java.io.LineNumberReader;public class MACAddress { String ip; String mac; public MACAddress (String ip){  this.ip = ip; } public MACAddress (){  this.ip = "0.0.0.0"; } public String getMac(){  try {  Process p = Runtime.getRuntime().exec("arp -n");   InputStreamReader ir = new InputStreamReader(p.getInputStream());   LineNumberReader input = new LineNumberReader(ir);   p.waitFor();   boolean flag = true;   String ipStr = "(" + this.ip + ")";   while(flag) {    String str = input.readLine();    if (str != null) {     if (str.indexOf(ipStr) > 1) {      int temp = str.indexOf("at");      this.mac = str.substring(      temp + 3, temp + 20);      break;     }    } else    flag = false;   }  } catch (IOException | InterruptedException e) {   e.printStackTrace(System.out);  }  return this.mac; } public void setIp(String ip){  this.ip = ip; }}

最后要放大招了,小伙伴们看仔细哦

首先要说的是:本方法可以支持外网机器的mac地址获取。

以前弄了一个只能访问局域网。 有防火墙就访问不了, 但是这个不用担心了。
测试了百度的ip,已经可以获得mac地址

java通过ip获取mac地址-封ip封mac地址

import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.regex.Matcher;import java.util.regex.Pattern;/*** 获取MAC地址* @author* 2011-12*/public class GetMacAddress {   public static String callCmd(String[] cmd) {      String result = "";      String line = "";      try {        Process proc = Runtime.getRuntime().exec(cmd);        InputStreamReader is = new InputStreamReader(proc.getInputStream());        BufferedReader br = new BufferedReader (is);        while ((line = br.readLine ()) != null) {        result += line;        }      }      catch(Exception e) {        e.printStackTrace();      }      return result;    }      /**    *    * @param cmd 第一个命令    * @param another 第二个命令    * @return  第二个命令的执行结果    */    public static String callCmd(String[] cmd,String[] another) {      String result = "";      String line = "";      try {        Runtime rt = Runtime.getRuntime();        Process proc = rt.exec(cmd);        proc.waitFor(); //已经执行完第一个命令,准备执行第二个命令        proc = rt.exec(another);        InputStreamReader is = new InputStreamReader(proc.getInputStream());        BufferedReader br = new BufferedReader (is);        while ((line = br.readLine ()) != null) {          result += line;        }      }      catch(Exception e) {        e.printStackTrace();      }      return result;    }            /**    *    * @param ip 目标ip,一般在局域网内    * @param sourceString 命令处理的结果字符串    * @param macSeparator mac分隔符号    * @return mac地址,用上面的分隔符号表示    */    public static String filterMacAddress(final String ip, final String sourceString,final String macSeparator) {      String result = "";      String regExp = "((([0-9,A-F,a-f]{1,2}" + macSeparator + "){1,5})[0-9,A-F,a-f]{1,2})";      Pattern pattern = Pattern.compile(regExp);      Matcher matcher = pattern.matcher(sourceString);      while(matcher.find()){        result = matcher.group(1);        if(sourceString.indexOf(ip) <= sourceString.lastIndexOf(matcher.group(1))) {          break; //如果有多个IP,只匹配本IP对应的Mac.        }      }       return result;    }            /**    *    * @param ip 目标ip    * @return  Mac Address    *    */    public static String getMacInWindows(final String ip){      String result = "";      String[] cmd = {          "cmd",          "/c",          "ping " + ip          };      String[] another = {          "cmd",          "/c",          "arp -a"          };        String cmdResult = callCmd(cmd,another);      result = filterMacAddress(ip,cmdResult,"-");        return result;    }    /**    * @param ip 目标ip    * @return  Mac Address    *    */    public static String getMacInLinux(final String ip){      String result = "";      String[] cmd = {          "/bin/sh",          "-c",          "ping " + ip + " -c 2 && arp -a"          };      String cmdResult = callCmd(cmd);      result = filterMacAddress(ip,cmdResult,":");        return result;    }       /**   * 获取MAC地址    * @return 返回MAC地址   */   public static String getMacAddress(String ip){     String macAddress = "";     macAddress = getMacInWindows(ip).trim();     if(macAddress==null||"".equals(macAddress)){       macAddress = getMacInLinux(ip).trim();     }     return macAddress;   }   //做个测试   public static void main(String[] args) {           System.out.println(getMacAddress("220.181.111.148"));   }  }


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