J2SE新特性 Windows下讀取網卡物理地址

j2se|window

個例子使用了J2SE5.0的ProcessBuilder類執行外部的程式，相對於 Runtime.exec ,它更方便，可以設定環境變數等。

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;        //物理網卡列表        List<String> address = new ArrayList<String>();        try        {            //執行ipconfig /all命令            p = new ProcessBuilder("ipconfig", "/all").start();        }        catch (IOException e)        {            return  address;        }        byte[] b = new byte[1024];        StringBuffer sb = new StringBuffer();        //讀取進程輸出值        InputStream in = p.getInputStream();        try        {            while (in.read(b)>0)            {                sb.append(new String(b));            }        }        catch (IOException e1)        {        }        finally        {            try            {                in.close();            }            catch (IOException e2)            {            }        }        //以下分析輸出值，得到物理網卡        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("物理網卡地址:%s%n", add);        }    }}