140 lines
3.5 KiB
Java
140 lines
3.5 KiB
Java
package com.kexue.skills.common.util;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang3.StringUtils;
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import jakarta.servlet.http.HttpServletRequest;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* @author laoxu
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**/
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@Slf4j
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public class IpUtil {
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public final static String ERROR_IP = "127.0.0.1";
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public final static Pattern pattern = Pattern.
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compile("(2[5][0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})\\.(25[0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})\\.(25[0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})\\.(25[0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})");
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/**
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* 取外网IP
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*
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* @param request
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* @return
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*/
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public static String getRemoteIp(HttpServletRequest request) {
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String ip = request.getHeader("x-real-ip");
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if (ip == null) {
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ip = request.getRemoteAddr();
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}
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//过滤反向代理的ip
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String[] stemps = ip.split(",");
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if (stemps != null && stemps.length >= 1) {
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//得到第一个IP，即客户端真实IP
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ip = stemps[0];
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}
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ip = ip.trim();
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if (ip.length() > 23) {
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ip = ip.substring(0, 23);
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}
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return ip;
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}
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/**
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* 获取用户的真实ip
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*
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* @param request
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* @return
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*/
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public static String getUserIP(HttpServletRequest request) {
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// 优先取X-Real-IP
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String ip = request.getHeader("X-Real-IP");
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if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("x-forwarded-for");
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}
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if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getRemoteAddr();
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if ("0:0:0:0:0:0:0:1".equals(ip)) {
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ip = ERROR_IP;
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}
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}
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if ("unknown".equalsIgnoreCase(ip)) {
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ip = ERROR_IP;
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return ip;
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}
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int pos = ip.indexOf(',');
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if (pos >= 0) {
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ip = ip.substring(0, pos);
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}
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return ip;
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}
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public static String getLastIpSegment(HttpServletRequest request) {
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String ip = getUserIP(request);
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if (ip != null) {
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ip = ip.substring(ip.lastIndexOf('.') + 1);
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} else {
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ip = "0";
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}
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return ip;
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}
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public static boolean isValidIP(HttpServletRequest request) {
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String ip = getUserIP(request);
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return isValidIP(ip);
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}
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/**
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* 判断我们获取的ip是否是一个符合规则ip
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*
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* @param ip
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* @return
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*/
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public static boolean isValidIP(String ip) {
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if (StringUtils.isEmpty(ip)) {
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log.debug("ip is null. valid result is false");
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return false;
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}
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Matcher matcher = pattern.matcher(ip);
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boolean isValid = matcher.matches();
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log.debug("valid ip:" + ip + " result is: " + isValid);
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return isValid;
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}
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public static String getLastServerIpSegment() {
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String ip = getServerIP();
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if (ip != null) {
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ip = ip.substring(ip.lastIndexOf('.') + 1);
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} else {
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ip = "0";
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}
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return ip;
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}
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public static String getServerIP() {
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InetAddress inet;
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try {
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inet = InetAddress.getLocalHost();
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String hostAddress = inet.getHostAddress();
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return hostAddress;
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} catch (UnknownHostException e) {
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e.printStackTrace();
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}
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return "127.0.0.1";
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}
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}
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