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SpringBoot系列:获取当前登录用户IP

SpringBoot系列:获取当前登录用户IP

前言
今天博主将为大家分享SpringBoot系列:获取当前登录用户IP,不喜勿喷,如有异议欢迎讨论!

有一个强大的地基才能写出健壮的程序!

活不多说上代码
控制器方法:

package com.cyj.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.cyj.util.IpUtil;

/**
*
* @Description: 获取ip控制器
* @ClassName: IpController.java
* @author ChenYongJia
* @Date 2019年4月20日 晚上20:25
* @Email chen87647213@163.com
*/
@RestController
public class IpController {

@RequestMapping(value = “/getIp”, method = RequestMethod.POST)
public String getIp(HttpServletRequest request) {
return IpUtil.getIpAddr(request);
}

}

工具类方法

package com.jmccms.util;

import lombok.extern.slf4j.Slf4j;

import javax.servlet.http.HttpServletRequest;
import java.net.*;
import java.util.Enumeration;

/**
* @Description: 获取IP方法
* @BelongsProject: Jmccms
* @BelongsPackage: com.jmccms.util
* @Author: ChenYongJia
* @CreateTime: 2019-05-14 22:29
* @Email chen87647213@163.com
*/
@Slf4j
public class IpUtils {
private static final String LOCAL_IP = “127.0.0.1”;

public static String getIpAddr(HttpServletRequest request) {
if (request == null) {
return “unknown”;
}
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(“X-Forwarded-For”);
}
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(“X-Real-IP”);
}

if (ip == null || ip.length() == 0 || “unknown”.equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}

return “0:0:0:0:0:0:0:1”.equals(ip) ? LOCAL_IP : ip;
}

public static boolean internalIp(String ip) {
boolean res = false;
byte[] addr = textToNumericFormatV4(ip);
if (addr != null && ip != null) {
res = internalIp(addr) || LOCAL_IP.equals(ip);
}
return res;
}

private static boolean internalIp(byte[] addr) {
final byte b0 = addr[0];
final byte b1 = addr[1];
// 10.x.x.x/8
final byte SECTION_1 = 0x0A;
// 172.16.x.x/12
final byte SECTION_2 = (byte) 0xAC;
final byte SECTION_3 = (byte) 0x10;
final byte SECTION_4 = (byte) 0x1F;
// 192.168.x.x/16
final byte SECTION_5 = (byte) 0xC0;
final byte SECTION_6 = (byte) 0xA8;
boolean flag = false;
switch (b0) {
case SECTION_1:
flag = true;
break;
case SECTION_2:
if (b1 >= SECTION_3 && b1 <= SECTION_4) {
flag = true;
}
break;
case SECTION_5:
if (b1 == SECTION_6) {
flag = true;
}
break;
default:
break;
}
return flag;
}

/**
* 将IPv4地址转换成字节
*IPv4地址
* @param text
* @return byte 字节
*/
public static byte[] textToNumericFormatV4(String text) {
if (text.length() == 0) {
return null;
}

byte[] bytes = new byte[4];
String[] elements = text.split(“\\.”, -1);
try {
long l;
int i;
switch (elements.length) {
case 1:
l = Long.parseLong(elements[0]);
if ((l < 0L) || (l > 4294967295L))
return null;
bytes[0] = (byte) (int) (l >> 24 & 0xFF);
bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF);
bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
bytes[3] = (byte) (int) (l & 0xFF);
break;
case 2:
l = Integer.parseInt(elements[0]);
if ((l < 0L) || (l > 255L))
return null;
bytes[0] = (byte) (int) (l & 0xFF);
l = Integer.parseInt(elements[1]);
if ((l < 0L) || (l > 16777215L))
return null;
bytes[1] = (byte) (int) (l >> 16 & 0xFF);
bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
bytes[3] = (byte) (int) (l & 0xFF);
break;
case 3:
for (i = 0; i < 2; ++i) {
l = Integer.parseInt(elements[i]);
if ((l < 0L) || (l > 255L))
return null;
bytes[i] = (byte) (int) (l & 0xFF);
}
l = Integer.parseInt(elements[2]);
if ((l < 0L) || (l > 65535L))
return null;
bytes[2] = (byte) (int) (l >> 8 & 0xFF);
bytes[3] = (byte) (int) (l & 0xFF);
break;
case 4:
for (i = 0; i < 4; ++i) {
l = Integer.parseInt(elements[i]);
if ((l < 0L) || (l > 255L))
return null;
bytes[i] = (byte) (int) (l & 0xFF);
}
break;
default:
return null;
}
} catch (NumberFormatException e) {
log.error(“数字格式化异常”,e);
return null;
}
return bytes;
}

public static String getLocalIP() {
String ip = “”;
if (System.getProperty(“os.name”).toLowerCase().startsWith(“windows”)) {
InetAddress addr;
try {
addr = InetAddress.getLocalHost();
ip = addr.getHostAddress();
} catch (UnknownHostException e) {
log.error(“获取失败”,e);
}
return ip;
} else {
try {
Enumeration<?> e1 = (Enumeration<?>) NetworkInterface
.getNetworkInterfaces();
while (e1.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface) e1.nextElement();
if (!ni.getName().equals(“eth0”)) {
continue;
} else {
Enumeration<?> e2 = ni.getInetAddresses();
while (e2.hasMoreElements()) {
InetAddress ia = (InetAddress) e2.nextElement();
if (ia instanceof Inet6Address)
continue;
ip = ia.getHostAddress();
return ip;
}
break;
}
}
} catch (SocketException e) {
log.error(“获取失败”,e);
}
}
return “”;
}
}

到这里SpringBoot系列:获取当前登录用户IP,分享完毕了,快去试试吧!
———————
作者:陈永佳
来源:CSDN
原文:https://blog.csdn.net/Mrs_chens/article/details/90475108
版权声明:本文为博主原创文章,转载请附上博文链接!

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