springboot 获取客户端ip_JAVA如何获取客户端IP地址和MAC地址
本文介紹了JAVA如何獲取客戶端IP地址和MAC地址 ，分享給大家，具體如下：
1.獲取客戶端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();
}
為什么不直接使用request.getRemoteAddr()；而要在之前判斷兩個請求頭"X-Forwarded-For"和"X-Real-IP"
X-Forwarded-For: client1, proxy1, proxy2, proxy3
其中的值通過一個 逗號+空格 把多個IP地址區分開, 最左邊(client1)是最原始客戶端的IP地址, 代理服務器每成功收到一個請求，就把請求來源IP地址添加到右邊。
所有我們只取第一個IP地址
X-Real-IP，一般只記錄真實發出請求的客戶端IP
解決用localhost訪問ip為0:0:0:0:0:0:0:1的問題
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.獲取客戶端MAC地址
UdpGetClientMacAddr umac = new UdpGetClientMacAddr(sip);
String smac = umac.GetRemoteMacAddr();
添加一個獲取MAC的時間限制
final UdpGetClientMacAddr umac = new UdpGetClientMacAddr(sip);
//---長時間獲取不到MAC地址則放棄
ExecutorService exec = Executors.newFixedThreadPool(1);
Callable call = new Callable() {
public String call() throws Exception {
return umac.GetRemoteMacAddr();
}
};
try {
Future future = exec.submit(call);
String smac = future.get(1000 * 1, TimeUnit.MILLISECONDS);
loginMonitor.setMacAddress(smac);
} catch (TimeoutException ex) {
loginMonitor.setMacAddress("獲取失敗");
logger.info("獲取MAC地址超時");
ex.printStackTrace();
}
// 關閉線程池
exec.shutdown();
//---
需要先獲取IP地址作為參數構造一個UdpGetClientMacAddr
UdpGetClientMacAddr.java
package shmc.commonsys.security.controller;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
/**
* 主機A向主機B發送“UDP－NetBIOS－NS”詢問包，即向主機B的137端口，發Query包來詢問主機B的NetBIOS Names信息。
* 其次，主機B接收到“UDP－NetBIOS－NS”詢問包，假設主機B正確安裝了NetBIOS服務........... 而且137端口開放，則主機B會向主機A發送一個“UDP－NetBIOS－NS”應答包，即發Answer包給主機A。
* 并利用UDP(NetBIOS Name Service)來快速獲取遠程主機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 {
// 獲取計算機名
int i = brevdata[56] * 18 + 56;
String sAddr="";
StringBuffer sb = new StringBuffer(17);
// 先從第56字節位置，讀出Number Of Names(NetBIOS名字的個數，其中每個NetBIOS Names Info部分占18個字節)
// 然后可計算出“Unit ID”字段的位置＝56＋Number Of Names×18，最后從該位置起連續讀取6個字節，就是目的主機的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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