J2SE实现windows读取网卡的物理地址

    这个例子使用了J2SE5.0的ProcessBuilder类执行外部的程序，相对于 Runtime.exec ,它更方便，可以设置环境变量等。

    package com.kuaff.jdk5package;

    import java.io.IOException;
    import java.io.InputStream;
    import java.util.ArrayList;
    import java.util.List;

    public class ProcessBuilderShow
    {
        public static List<String> getPhysicalAddress()
        {
        Process p = null;
        //物理网卡列表
        List<String> address = new ArrayList<String>();

        try
        {
            //执行ipconfig /all命令
            p = new ProcessBuilder(\"ipconfig\", \"/all\").start();
        }
        catch (IOException e)
        {
            return  address;
        }
        byte[] b = new byte[1024];
        StringBuffer sb = new StringBuffer();
        //读取进程输出值
        InputStream in = p.getInputStream();
        try
        {
            while (in.read(b)>0)
            {
                sb.append(new String(b));
            }
        }
        catch (IOException e1)
        {
        }
        finally
        {
            try
            {[Page]
                in.close();
            }
            catch (IOException e2)
            {
            }
        }
        //以下分析输出值，得到物理网卡
        String rtValue = sb.substring(0);
        int i = rtValue.indexOf(\"Physical Address. . . . . . . . . :\");
        while(i>0)
        {
            rtValue = rtValue.substring(i + \"Physical Address. . . . . . . . . :\".length());
            address.add(rtValue.substring(0,18));
            i = rtValue.indexOf(\"Physical Address. . . . . . . . . :\");
        }

        return address;

    }
    public static void main(String[] args)
    {
        List<String> address = ProcessBuilderShow.getPhysicalAddress();
        for(String add:address)
        {
            System.out.printf(\"物理网卡地址:%s%n\", add);