获取客户端网卡的MAC地址

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

public String getMyIP() { try { FacesContext fc = FacesContext.getCurrentInstance(); HttpServletRequest request = (HttpServletRequest)fc.getExternalContext().getRequest(); return request.getRemoteAddr(); } catch (Exception e) { e.printStackTrace(); } return ""; }

 

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：

 

 //运行速度【快】 public String getMAC() { String mac = null; try { Process pro = Runtime.getRuntime().exec("cmd.exe /c ipconfig/all"); InputStream is = pro.getInputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(is)); String message = br.readLine(); int index = -1; while (message != null) { if ((index = message.indexOf("Physical Address")) > 0) { mac = message.substring(index + 36).trim(); break; } message = br.readLine(); } System.out.println(mac); br.close(); pro.destroy(); } catch (IOException e) { System.out.println("Can't get mac address!"); return null; } return mac; } //运行速度【慢】 public String getMAC(String ip){ String str = null; String macAddress = null; try { Process p = Runtime.getRuntime().exec("nbtstat -A " + ip); InputStreamReader ir = new InputStreamReader(p.getInputStream()); LineNumberReader input = new LineNumberReader(ir); for (; true; ) { str = input.readLine(); if (str != null) { if (str.indexOf("MAC Address") > 1) { macAddress = str.substring(str.indexOf("MAC Address") + 14); break; } } } } catch (IOException e) { e.printStackTrace(System.out); return null; } return macAddress; }