本篇文章主要介绍了java如何获取客户端ip地址和mac地址非常具有实用价值，这里整理了详细的代码，需要的朋友可以参考下
本文介绍了java如何获取客户端ip地址和mac地址 ，分享给大家，具体如下：
1.获取客户端ip地址
public string getip(httpservletrequest request) throws exception {
string ip = request.getheader("x-forwarded-for");
if (ip != null) {
if (!ip.isempty() && !"unknown".equalsignorecase(ip)) {
int index = ip.indexof(",");
if (index != -1) {
return ip.substring(0, index);
} else {
return ip;
}
}
}
ip = request.getheader("x-real-ip");
if (ip != null) {
if (!ip.isempty() && !"unknown".equalsignorecase(ip)) {
return ip;
}
}
return request.getremoteaddr();
}
为什么不直接使用request.getremoteaddr()；而要在之前判断两个请求头"x-forwarded-for"和"x-real-ip"
x-forwarded-for: client1, proxy1, proxy2, proxy3
其中的值通过一个 逗号+空格 把多个ip地址区分开, 最左边(client1)是最原始客户端的ip地址, 代理服务器每成功收到一个请求，就把请求来源ip地址添加到右边。
所有我们只取第一个ip地址
x-real-ip，一般只记录真实发出请求的客户端ip
解决用localhost访问ip为0:0:0:0:0:0:0:1的问题
public string getip(httpservletrequest request) throws exception {
string ip = request.getheader("x-forwarded-for");
if (ip != null) {
if (!ip.isempty() && !"unknown".equalsignorecase(ip)) {
int index = ip.indexof(",");
if (index != -1) {
return ip.substring(0, index);
} else {
return ip;
}
}
}
ip = request.getheader("x-real-ip");
if (ip != null) {
if (!ip.isempty() && !"unknown".equalsignorecase(ip)) {
return ip;
}
}
ip = request.getheader("proxy-client-ip");
if (ip != null) {
if (!ip.isempty() && !"unknown".equalsignorecase(ip)) {
return ip;
}
}
ip = request.getheader("wl-proxy-client-ip");
if (ip != null) {
if (!ip.isempty() && !"unknown".equalsignorecase(ip)) {
return ip;
}
}
ip = request.getremoteaddr();
return ip.equals("0:0:0:0:0:0:0:1") ? "127.0.0.1" : ip;
}
2.获取客户端mac地址
udpgetclientmacaddr umac = new udpgetclientmacaddr(sip);
string smac = umac.getremotemacaddr();
添加一个获取mac的时间限制
final udpgetclientmacaddr umac = new udpgetclientmacaddr(sip);
//---长时间获取不到mac地址则放弃
executorservice exec = executors.newfixedthreadpool(1);
callable<string> call = new callable<string>() {
public string call() throws exception {
return umac.getremotemacaddr();
}
};
try {
future<string> future = exec.submit(call);
string smac = future.get(1000 * 1, timeunit.milliseconds);
loginmonitor.setmacaddress(smac);
} catch (timeoutexception ex) {
loginmonitor.setmacaddress("获取失败");
logger.info("获取mac地址超时");
ex.printstacktrace();
}
// 关闭线程池
exec.shutdown();
//---
需要先获取ip地址作为参数构造一个udpgetclientmacaddr
udpgetclientmacaddr.java
package shmc.commonsys.security.controller;
import java.io.ioexception;
import java.net.datagrampacket;
import java.net.datagramsocket;
import java.net.inetaddress;
/**
* 主机a向主机b发送“udp－netbios－ns”询问包，即向主机b的137端口，发query包来询问主机b的netbios names信息。
* 其次，主机b接收到“udp－netbios－ns”询问包，假设主机b正确安装了netbios服务........... 而且137端口开放，则主机b会向主机a发送一个“udp－netbios－ns”应答包，即发answer包给主机a。
* 并利用udp(netbios name service)来快速获取远程主机mac地址的方法
*
*/
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();
}
public final datagrampacket send(final byte[] bytes) throws ioexception {
datagrampacket dp = new datagrampacket(bytes,bytes.length,inetaddress.getbyname(sremoteaddr),iremoteport);
ds.send(dp);
return dp;
}
public final datagrampacket receive() throws exception {
datagrampacket dp = new datagrampacket(buffer,buffer.length);
ds.receive(dp);
return dp;
}
public 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;
}
public 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(':');
}
return sb.tostring();
}
public final void close() throws exception {
ds.close();
}
public final string getremotemacaddr() throws exception {
byte[] bqcmd = getquerycmd();
send(bqcmd);
datagrampacket dp = receive();
string smac = getmacaddr(dp.getdata());
close();
return smac;
}
public static void main(string args[]) throws exception{
udpgetclientmacaddr umac=new udpgetclientmacaddr("172.19.1.198");
umac=new udpgetclientmacaddr("192.168.16.83");
system.out.println(umac.getremotemacaddr());
}
}
以上就是java获取客户端ip地址和mac地址的实例分享的详细内容。