java實現擷取使用者的MAC地址_java

方法一：將本機地址與區域網路內其他機器區分開來

/**   * 根據IP地址擷取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";    // 如果為127.0.0.1,則擷取本地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();      // 下面代碼是把mac地址拼裝成String      StringBuilder sb = new StringBuilder();      for (int i = 0; i < mac.length; i++) {        if (i != 0) {          sb.append("-");        }        // mac[i] & 0xFF 是為了把byte轉化為正整數        String s = Integer.toHexString(mac[i] & 0xFF);        sb.append(s.length() == 1 ? 0 + s : s);      }      // 把字串所有小寫字母改為大寫成為正規的mac地址並返回      macAddress = sb.toString().trim().toUpperCase();      return macAddress;    } else {      // 擷取非本地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;    }  }

我們再來看下方法二：

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擷取用戶端網卡的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.擷取用戶端ip地址( 這個必須從用戶端傳到後台)：// jsp頁面下，很簡單，request.getRemoteAddr() ;// 因為系統的VIew層是用JSF來實現的，因此頁面上沒法直接獲得類似request，在bean裡做了個強制轉換// public String getMyIP() {// try {// FacesContext fc = FacesContext.getCurrentInstance();// HttpServletRequest request = (HttpServletRequest) fc// .getExternalContext().getRequest();// return request.getRemoteAddr();// } catch (Exception e) {// e.printStackTrace();// }// return "";// }// 2.擷取用戶端mac地址// 調用window的命令，在後台Bean裡實現 通過ip來擷取mac地址。方法如下：// 運行速度【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;}// 運行速度【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，更精簡一些

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; }}

最後要放大招了，小夥伴們看仔細哦

首先要說的是：本方法可以支援外網機器的mac地址擷取。 

以前弄了一個只能訪問區域網路。 有防火牆就訪問不了， 但是這個不用擔心了。
測試了百度的ip，已經可以獲得mac地址

java通過ip擷取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;/*** 擷取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 第一個命令    * @param another 第二個命令    * @return  第二個命令的執行結果    */    public static String callCmd(String[] cmd,String[] another) {      String result = "";      String line = "";      try {        Runtime rt = Runtime.getRuntime();        Process proc = rt.exec(cmd);        proc.waitFor(); //已經執行完第一個命令，準備執行第二個命令        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 目標ip,一般在區域網路內    * @param sourceString 命令處理的結果字串    * @param macSeparator mac分隔字元號    * @return mac地址，用上面的分隔字元號表示    */    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; //如果有多個IP,只匹配本IP對應的Mac.        }      }       return result;    }            /**    *    * @param ip 目標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 目標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;    }       /**   * 擷取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;   }   //做個測試   public static void main(String[] args) {           System.out.println(getMacAddress("220.181.111.148"));   }  }