方法一：將本機地址與局域網內其他機器區分開來
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/** * 根據IP地址獲取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,則獲取本地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); } // 把字符串所有小寫字母改為大寫成為正規的mac地址并返回 macAddress = sb.toString().trim().toUpperCase(); return macAddress; } else { // 獲取非本地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：
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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獲取客戶端網卡的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.獲取客戶端ip地址( 這個必須從客戶端傳到后臺)： // 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里做了個強制轉換 // public String getMyIP() { // try { // FacesContext fc = FacesContext.getCurrentInstance(); // HttpServletRequest request = (HttpServletRequest) fc // .getExternalContext().getRequest(); // return request.getRemoteAddr(); // } catch (Exception e) { // e.printStackTrace(); // } // return ""; // } // 2.獲取客戶端mac地址 // 調用window的命令，在后臺Bean里實現 通過ip來獲取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
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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，小伙伴們看仔細哦
首先要說的是：本方法可以支持外網機器的mac地址獲取。
以前弄了一個只能訪問局域網。 有防火墻就訪問不了， 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獲取mac地址-封ip封mac地址
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import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.regex.Matcher;import java.util.regex.Pattern;/*** 獲取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,一般在局域網內 * @param sourceString 命令處理的結果字符串 * @param macSeparator mac分隔符號 * @return mac地址，用上面的分隔符號表示 */ 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; } /** * 獲取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")); } } |
