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.spring work.web.bind.annotation.RequestMapping;
import org.spring work.web.bind.annotation.RequestMethod;
import org.spring work.web.bind.annotation.RestController;

import com.cyj.util.IpUtil;

/**

• @De ion: 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;

/**

• @De ion: 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！