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
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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();
}
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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
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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;
}
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2.获取客户端MAC地址
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UdpGetClientMacAddr umac =
new
UdpGetClientMacAddr(sip);
String smac = umac.GetRemoteMacAddr();
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添加一个获取MAC的时间限制
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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();
//---
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需要先获取IP地址作为参数构造一个UdpGetClientMacAddr
UdpGetClientMacAddr.java
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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());
}
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。