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JAVA获取请求的IP及MAC地址

话不多说，github地址：https://github.com/javertWang/ToolClass，觉得满意，请给github标个星，笔芯 java获取ip地址-获取请求的ip，mac地址:IpUtil

package com.util.net;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {
    /**
    * 获取登录用户IP地址
    * 
    * @param request
    * @return
    */
    public static String getIpAddr(HttpServletRequest request) {
        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.getRemoteAddr();
        }
        if (ip.equals("0:0:0:0:0:0:0:1")) {
            ip = "本地";
        }
        return ip;
    }

    /**
    * 根据IP地址获取mac地址
    * 
    * @param ipAddress
    *            127.0.0.1
    * @return
    * @throws SocketException
    * @throws UnknownHostException
    */
    public static String getLocalMac(String ipAddress) throws SocketException,
    UnknownHostException {
        // TODO Auto-generated method stub
        String str = "";
        String macAddress = "";
        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(ipAddress)) {
            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;
        } else {
            // 获取非本地IP的MAC地址
            try {
                System.out.println(ipAddress);
                Process p = Runtime.getRuntime()
                    .exec("nbtstat -A " + ipAddress);
                System.out.println("===process==" + p);
                InputStreamReader ir = new InputStreamReader(p.getInputStream());

                BufferedReader br = new BufferedReader(ir);

                while ((str = br.readLine()) != null) {
                    if (str.indexOf("MAC") > 1) {
                        macAddress = str.substring(str.indexOf("MAC") + 9,
                                                   str.length());
                        macAddress = macAddress.trim();
                        System.out.println("macAddress:" + macAddress);
                        break;
                    }
                }
                p.destroy();
                br.close();
                ir.close();
            } catch (IOException ex) {
            }
            return macAddress;
        }
    }
}

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