下面这段小程序在Windows 2000上能运行通过(应该在win9x, xp ,2003上也可以)没有试过,而且有多个网卡的情况没有考虑,这里只是把所有的网卡MAC地址罗列出来,按照这个思路,在Linux平台上,作个判断,取"ifconfig"命令的输出同样可以取得网卡MAC地址。
import java.io.*;
public class Cmdoutput{
public static void main(String[] args){
try{
Process process = Runtime.getRuntime().exec ("ipconfig /all");
InputStreamReader ir=new InputStreamReader(process.getInputStream());
LineNumberReader input = new LineNumberReader (ir);
String line;
while ((line = input.readLine ()) != null)
if( line.indexOf("Physical Address")>0 ) {
String MACAddr = line.substring(line.indexOf("-")-2);
System.out.println("MAC address = ["+ MACAddr + "]");
}
}catch (java.io.IOException e){
System.err.println ("IOException " + e.getMessage());
}
}
}
C:\java>
下面这个例子使用了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:
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);
}
}
}
程序运行结果:
C:\java>
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