java 获取网卡物理地址

2./*  
3. * Created on 2005-6-5  
4. * Author stephen  
5. * Email zhoujianqiang AT gmail DOT com  
6. * CopyRight(C)2005-2008 , All rights reserved.  
7. */   
8.import java.io.BufferedReader;    
9.import java.io.IOException;    
10.import java.io.InputStreamReader;    
11.   
12./**  
13. * 与系统相关的一些常用工具方法.  
14. *   
15. * @author stephen  
16. * @version 1.0.0  
17. */   
18.public class SystemTool {    
19.   
20.    /**  
21.     * 获取当前操作系统名称.  
22.     * return 操作系统名称 例如:windows xp,linux 等.  
23.     */   
24.    public static String getOSName() {    
25.        return System.getProperty("os.name").toLowerCase();    
26.    }    
27.        
28.    /**  
29.     * 获取unix网卡的mac地址.  
30.     * 非windows的系统默认调用本方法获取.如果有特殊系统请继续扩充新的取mac地址方法.  
31.     * @return mac地址  
32.     */   
33.    public static String getUnixMACAddress() {    
34.        String mac = null;    
35.        BufferedReader bufferedReader = null;    
36.        Process process = null;    
37.        try {    
38.            process = Runtime.getRuntime().exec("ifconfig eth0");// linux下的命令，一般取eth0作为本地主网卡 显示信息中包含有mac地址信息   
39.            bufferedReader = new BufferedReader(new InputStreamReader(process    
40.                    .getInputStream()));    
41.            String line = null;    
42.            int index = -1;    
43.            while ((line = bufferedReader.readLine()) != null) {    
44.                index = line.toLowerCase().indexOf("hwaddr");// 寻找标示字符串[hwaddr]   
45.                if (index >= 0) {// 找到了   
46.                    mac = line.substring(index +"hwaddr".length()+ 1).trim();//  取出mac地址并去除2边空格   
47.                    break;    
48.                }    
49.            }    
50.        } catch (IOException e) {    
51.            e.printStackTrace();    
52.        } finally {    
53.            try {    
54.                if (bufferedReader != null) {    
55.                    bufferedReader.close();    
56.                }    
57.            } catch (IOException e1) {    
58.                e1.printStackTrace();    
59.            }    
60.            bufferedReader = null;    
61.            process = null;    
62.        }    
63.   
64.        return mac;    
65.    }    
66.   
67.    /**  
68.     * 获取widnows网卡的mac地址.  
69.     * @return mac地址  
70.     */   
71.    public static String getWindowsMACAddress() {    
72.        String mac = null;    
73.        BufferedReader bufferedReader = null;    
74.        Process process = null;    
75.        try {    
76.            process = Runtime.getRuntime().exec("ipconfig /all");// windows下的命令，显示信息中包含有mac地址信息   
77.            bufferedReader = new BufferedReader(new InputStreamReader(process    
78.                    .getInputStream()));    
79.            String line = null;    
80.            int index = -1;    
81.            while ((line = bufferedReader.readLine()) != null) {    
82.                index = line.toLowerCase().indexOf("physical address");// 寻找标示字符串[physical address]   
83.                if (index >= 0) {// 找到了   
84.                    index = line.indexOf(":");// 寻找":"的位置   
85.                    if (index>=0) {    
86.                        mac = line.substring(index + 1).trim();//  取出mac地址并去除2边空格   
87.                    }    
88.                    break;    
89.                }    
90.            }    
91.        } catch (IOException e) {    
92.            e.printStackTrace();    
93.        } finally {    
94.            try {    
95.                if (bufferedReader != null) {    
96.                    bufferedReader.close();    
97.                }    
98.            } catch (IOException e1) {    
99.                e1.printStackTrace();    
100.            }    
101.            bufferedReader = null;    
102.            process = null;    
103.        }    
104.   
105.        return mac;    
106.    }    
107.   
108.    /**  
109.     * 测试用的main方法.  
110.     *   
111.     * @param argc  
112.     *            运行参数.  
113.     */   
114.    public static void main(String[] argc) {    
115.        String os = getOSName();    
116.        System.out.println(os);    
117.        if(os.startsWith("windows")){    
118.            //本地是windows   
119.            String mac = getWindowsMACAddress();    
120.            System.out.println(mac);    
121.        }else{    
122.            //本地是非windows系统 一般就是unix   
123.            String mac = getUnixMACAddress();    
124.            System.out.println(mac);    
125.        }    
126.    }    
127.}