教程由JAVA中文网整理校对发布(javaweb.cc)
1.获取客户端ip地址( 这个必须从客户端传到后台)：
jsp页面下，很简单，request.getRemoteAddr() ;
因为系统的VIew层是用JSF来实现的，因此页面上没法直接获得类似request，在bean里做了个强制转换
1. public String getMyIP() {
2. try {
3. FacesContext fc = FacesContext.getCurrentInstance();
4. HttpServletRequest request = (HttpServletRequest)fc.getExternalContext().getRequest();
5. return request.getRemoteAddr();
6. }
7. catch (Exception e) {
8. e.printStackTrace();
9. }
10. return "";
11. }
2.获取客户端mac地址
调用window的命令，在后台Bean里实现 通过ip来获取mac地址。方法如下：
1. //运行速度【快】
2. public String getMAC() {
3. String mac = null;
4. try {
5. Process pro = Runtime.getRuntime().exec("cmd.exe /c ipconfig/all");
6.
7. InputStream is = pro.getInputStream();
8. BufferedReader br = new BufferedReader(new InputStreamReader(is));
9. String message = br.readLine();
10.
11. int index = -1;
12. while (message != null) {
13. if ((index = message.indexOf("Physical Address")) > 0) {
14. mac = message.substring(index + 36).trim();
15. break;
16. }
17. message = br.readLine();
18. }
19. System.out.println(mac);
20. br.close();
21. pro.destroy();
22. } catch (IOException e) {
23. System.out.println("Can't get mac address!");
24. return null;
25. }
26. return mac;
27. }
28.
29. //运行速度【慢】
30. public String getMAC(String ip){
31. String str = null;
32. String macAddress = null;
33. try {
34. Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
35. InputStreamReader ir = new InputStreamReader(p.getInputStream());
36. LineNumberReader input = new LineNumberReader(ir);
37. for (; true; ) {
38. str = input.readLine();
39. if (str != null) {
40. if (str.indexOf("MAC Address") > 1) {
41. macAddress = str.substring(str.indexOf("MAC Address") + 14);
42. break;
43. }
44. }
45. }
46. } catch (IOException e) {
47. e.printStackTrace(System.out);
48. return null;
49. }
50. return macAddress;
51. }
获取客户端网卡的MAC地址(本教程仅供研究和学习，不代表JAVA中文网观点)
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