J2SE5.0新特性之windows下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

{

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);

}

}

}