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签到天数: 2 天 [LV.1]初来乍到
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上次在CSDN社区里有人问用java取得MAC地址,用JNI 肯定可以实现,但是麻烦的多,取命令行的输出应该会方便点,虽然都破坏了Java的跨平台性,不过这也是没办法的事。 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());
}
}
} 程序运行结果:
C:java>java Cmdoutput
MAC address = [00-40-CA-BF-85-D5]
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<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);
- }
- }
- }
- 程序运行结果:
复制代码
C:java>java ProcessBuilderShow
物理网卡地址: 00-40-CA-BF-85-D5
C:java>
源码下载:http://file.javaxxz.com/2014/10/31/000014343.zip |
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