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开发学院WEB开发Jsp J2SE1.5新特性之ProcessBuilder 阅读

J2SE1.5新特性之ProcessBuilder

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核心提示: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,J2SE1.5新特性之ProcessBuilder,可以设置环境变量等,这里使用它在Windows下读取物理网卡的地址 package com.kuaff.JDK5package; import j

  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。这里使用它在Windows下读取物理网卡的地址

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 getPhysicalAddress()

 {

Process p = null;

//物理网卡列表

List address = new ArrayList();

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 address = ProcessBuilderShow.getPhysicalAddress();

for(String add:address)

{

 System.out.printf("物理网卡地址:%s%n", add);

}

 }

}

Tags:SE 特性 ProcessBuilder

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