java通過ip擷取用戶端Mac地址的小例子

複製代碼 代碼如下:package com.yswc.dao.sign;

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;
}
public static void main(String[] args) {
String mac=getMacAddress("192.168.1.102");
System.out.println("mac:"+mac);
}

}