http 获取mac地址

package cn.com.henry.servlet;  
  
import java.io.BufferedReader;  
import java.io.IOException;  
import java.io.InputStreamReader;  
import java.io.PrintWriter;  
import java.net.InetAddress;  
import java.net.NetworkInterface;  
  
import javax.servlet.ServletException;  
import javax.servlet.http.HttpServlet;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
public class Test extends HttpServlet {  
  
    /** 
     * Constructor of the object. 
     */  
    public Test() {  
        super();  
    }  
  
    /** 
     * Destruction of the servlet. 
*/ public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } /** * The doGet method of the servlet.
* * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println(""); out.println(""); out.println(" A Servlet"); out.println(" "); try { out.println("------------------------------------"); out.println("ip:"+getIpAddr(request)); } catch (Exception e) { e.printStackTrace(); } try { out.println("mac:"+getMACAddress(getIpAddr(request))); out.println("------------------------------------"); } catch (Exception e) { e.printStackTrace(); } out.print(" This is "); out.print(this.getClass()); out.println(", using the GET method"); out.println(" "); out.println(""); out.flush(); out.close(); } /** * The doPost method of the servlet.
* * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println(""); out.println(""); out.println(" A Servlet"); out.println(" "); try { out.println("------------------------------------"); out.println("ip:"+getIpAddr(request)); } catch (Exception e) { e.printStackTrace(); } try { out.println("mac:"+getMACAddress(getIpAddr(request))); out.println("------------------------------------"); } catch (Exception e) { e.printStackTrace(); } out.print(" This is "); out.print(this.getClass()); out.println(", using the POST method"); out.println(" "); out.println(""); out.flush(); out.close(); } /** * 通过HttpServletRequest返回IP地址 * @param request HttpServletRequest * @return ip String * @throws Exception */ public String getIpAddr(HttpServletRequest request) throws Exception { String ip = request.getHeader("x-forwarded-for"); if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("WL-Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_CLIENT_IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_X_FORWARDED_FOR"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } return ip; } /** * 通过IP地址获取MAC地址 * @param ip String,127.0.0.1格式 * @return mac String * @throws Exception */ public String getMACAddress(String ip) throws Exception { String line = ""; String macAddress = ""; final String MAC_ADDRESS_PREFIX = "MAC Address = "; final String LOOPBACK_ADDRESS = "127.0.0.1"; //如果为127.0.0.1,则获取本地MAC地址。 if (LOOPBACK_ADDRESS.equals(ip)) { InetAddress inetAddress = InetAddress.getLocalHost(); //貌似此方法需要JDK1.6。 byte[] mac = NetworkInterface.getByInetAddress(inetAddress).getHardwareAddress(); //下面代码是把mac地址拼装成String StringBuilder sb = new StringBuilder(); for (int i = 0; i < mac.length; i++) { if (i != 0) { sb.append("-"); } //mac[i] & 0xFF 是为了把byte转化为正整数 String s = Integer.toHexString(mac[i] & 0xFF); sb.append(s.length() == 1 ? 0 + s : s); } //把字符串所有小写字母改为大写成为正规的mac地址并返回 macAddress = sb.toString().trim().toUpperCase(); return macAddress; } //获取非本地IP的MAC地址 try { Process p = Runtime.getRuntime().exec("nbtstat -A " + ip); InputStreamReader isr = new InputStreamReader(p.getInputStream()); BufferedReader br = new BufferedReader(isr); while ((line = br.readLine()) != null) { if (line != null) { int index = line.indexOf(MAC_ADDRESS_PREFIX); if (index != -1) { macAddress = line.substring(index + MAC_ADDRESS_PREFIX.length()).trim().toUpperCase(); } } } br.close(); } catch (IOException e) { e.printStackTrace(System.out); } return macAddress; } }

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