获取客户机的ip和mac地址

只获取clientIP

 package com.ppms.utils;

 import javax.servlet.http.HttpServletRequest;

 /**
  * Created by liangyadong on 2018/9/6 0006.
  */
 public class GetClientIPUtil {

     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.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;
     }
 }

================================================我是分割线.==================================================

获取ip和mac地址:

jsp:

<%@ page import="com.ppms.utils.UdpGetClientMacAddr" %>
<%
    String macAddress = "";
    String sip = request.getHeader("x-forwarded-for");
    if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {
        sip = request.getHeader("Proxy-Client-IP");
    }
    if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {
        sip = request.getHeader("WL-Proxy-Client-IP");
    }
    if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {
        sip = request.getRemoteAddr();
    }
    UdpGetClientMacAddr umac = new UdpGetClientMacAddr(sip);
    macAddress = umac.GetRemoteMacAddr();
%>
<input id="mac" type="hidden" value="<%=macAddress%>">

java:

 package com.ppms.utils;

 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.LineNumberReader;
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;

 /**
  * Created by liangyadong on 2018/8/6 0006.
  */
 public class UdpGetClientMacAddr {
     private String sRemoteAddr;
     private int iRemotePort=137;
     private byte[] buffer = new byte[1024];
     private DatagramSocket ds=null;

     public UdpGetClientMacAddr(String strAddr) throws Exception{
         sRemoteAddr = strAddr;
         ds = new DatagramSocket();
     }

     protected final DatagramPacket send(final byte[] bytes) throws IOException {
         DatagramPacket dp = new DatagramPacket(bytes,bytes.length, InetAddress.getByName(sRemoteAddr),iRemotePort);
         ds.send(dp);
         return dp;
     }

     protected final DatagramPacket receive() throws Exception {
         DatagramPacket dp = new DatagramPacket(buffer,buffer.length);
         ds.receive(dp);
         return dp;
     }
     // 询问包结构:
     // Transaction ID 两字节（16位） 0x00 0x00
     // Flags 两字节（16位） 0x00 0x10
     // Questions 两字节（16位） 0x00 0x01
     // AnswerRRs 两字节（16位） 0x00 0x00
     // AuthorityRRs 两字节（16位） 0x00 0x00
     // AdditionalRRs 两字节（16位） 0x00 0x00
     // Name:array [1..34] 0x20 0x43 0x4B 0x41(30个) 0x00 ;
     // Type:NBSTAT 两字节 0x00 0x21
     // Class:INET 两字节（16位）0x00 0x01
     protected byte[] GetQueryCmd() throws Exception {
         byte[] t_ns = new byte[50];
         t_ns[0] = 0x00;
         t_ns[1] = 0x00;
         t_ns[2] = 0x00;
         t_ns[3] = 0x10;
         t_ns[4] = 0x00;
         t_ns[5] = 0x01;
         t_ns[6] = 0x00;
         t_ns[7] = 0x00;
         t_ns[8] = 0x00;
         t_ns[9] = 0x00;
         t_ns[10] = 0x00;
         t_ns[11] = 0x00;
         t_ns[12] = 0x20;
         t_ns[13] = 0x43;
         t_ns[14] = 0x4B;

         for(int i = 15; i < 45; i++)
         {
             t_ns[i] = 0x41;
         }

         t_ns[45] = 0x00;
         t_ns[46] = 0x00;
         t_ns[47] = 0x21;
         t_ns[48] = 0x00;
         t_ns[49] = 0x01;
         return t_ns;
     }
     // 表1 “UDP－NetBIOS－NS”应答包的结构及主要字段一览表
     // 序号 字段名 长度
     // 1 Transaction ID 两字节（16位）
     // 2 Flags 两字节（16位）
     // 3 Questions 两字节（16位）
     // 4 AnswerRRs 两字节（16位）
     // 5 AuthorityRRs 两字节（16位）
     // 6 AdditionalRRs 两字节（16位）
     // 7 Name<Workstation/Redirector> 34字节（272位）
     // 8 Type:NBSTAT 两字节（16位）
     // 9 Class:INET 两字节（16位）
     // 10 Time To Live 四字节（32位）
     // 11 Length 两字节（16位）
     // 12 Number of name 一个字节（8位）
     // NetBIOS Name Info 18×Number Of Name字节
     // Unit ID 6字节（48位
     protected final String GetMacAddr(byte[] brevdata) throws Exception {
         // 获取计算机名
         int i = brevdata[56] * 18 + 56;
         String sAddr="";
         StringBuffer sb = new StringBuffer(17);
         // 先从第56字节位置，读出Number Of Names（NetBIOS名字的个数，其中每个NetBIOS Names Info部分占18个字节）
         // 然后可计算出“Unit ID”字段的位置＝56＋Number Of Names×18，最后从该位置起连续读取6个字节，就是目的主机的MAC地址。
         for(int j = 1; j < 7;j++)
         {
             sAddr = Integer.toHexString(0xFF & brevdata[i+j]);
             if(sAddr.length() < 2)
             {
                 sb.append(0);
             }
             sb.append(sAddr.toUpperCase());
 //            if(j < 6) sb.append(':');//用:分隔
             if(j < 6) sb.append('-');//用-分隔
         }
         return sb.toString();
     }

     public final void close() {
         try
         {
             ds.close();
         }
         catch (Exception ex){
             ex.printStackTrace();
         }
     }

     public final String GetRemoteMacAddr() throws Exception {
         byte[] bqcmd = GetQueryCmd();
         send(bqcmd);
         DatagramPacket dp = receive();
         String smac = GetMacAddr(dp.getData());
         close();

         return smac;
     }

     public String getMACAddress(String ip){
         String str = "";
         String macAddress = "";
         try {
             Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
             InputStreamReader ir = new InputStreamReader(p.getInputStream());
             LineNumberReader input = new LineNumberReader(ir);
             for (int i = 1; i < 100; i++) {
                 str = input.readLine();
                 if (str != null) {
                     if (str.indexOf("MAC Address") > 1) {
                         macAddress = str.substring(str.indexOf("MAC Address") + 14, str.length());
                         break;
                     }
                 }
             }
         } catch (IOException e) {
             e.printStackTrace(System.out);
         }
         return macAddress;
     }

 }

注意106和107两行的注释.