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 ListgetPhysicalAddress() { 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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