package com.ruoyi.common.utils.netty;
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import java.net.InetAddress;
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import java.net.NetworkInterface;
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import java.net.UnknownHostException;
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import java.util.Enumeration;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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public class IPUtil {
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/**
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* 检查IP是否合法
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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 ipValid(String ip) {
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String regex0 = "(2[0-4]\\d)" + "|(25[0-5])";
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String regex1 = "1\\d{2}";
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String regex2 = "[1-9]\\d";
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String regex3 = "\\d";
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String regex = "(" + regex0 + ")|(" + regex1 + ")|(" + regex2 + ")|(" + regex3 + ")";
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regex = "(" + regex + ").(" + regex + ").(" + regex + ").(" + regex + ")";
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Pattern p = Pattern.compile(regex);
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Matcher m = p.matcher(ip);
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return m.matches();
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}
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/**
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* 获取本地ip 适合windows与linux
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*
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* @return
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*/
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public static String getLocalIP() {
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String localIP = "127.0.0.1";
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try {
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Enumeration netInterfaces = NetworkInterface.getNetworkInterfaces();
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while (netInterfaces.hasMoreElements()) {
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NetworkInterface ni = (NetworkInterface) netInterfaces.nextElement();
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InetAddress ip = ni.getInetAddresses().nextElement();
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if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {
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localIP = ip.getHostAddress();
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break;
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}
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}
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} catch (Exception e) {
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try {
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localIP = InetAddress.getLocalHost().getHostAddress();
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} catch (UnknownHostException e1) {
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e1.printStackTrace();
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}
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}
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return localIP;
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}
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/**
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* 获取客户机的ip地址
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* @param request
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* @return
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*/
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/*
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public static String getClientIp(HttpServletRequest request) {
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String ip = request.getHeader("x-forwarded-for");
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if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("WL-Proxy-Client-IP");
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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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}
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if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("http_client_ip");
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}
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if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_X_FORWARDED_FOR");
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}
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// 如果是多级代理，那么取第一个ip为客户ip
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if (ip != null && ip.indexOf(",") != -1) {
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ip = ip.substring(ip.lastIndexOf(",") + 1, ip.length()).trim();
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}
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return ip;
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}
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*/
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/**
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* 把ip转化为整数
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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 long translateIP2Int(String ip) {
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String[] intArr = ip.split("\\.");
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int[] ipInt = new int[intArr.length];
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for (int i = 0; i < intArr.length; i++) {
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ipInt[i] = new Integer(intArr[i]).intValue();
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}
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return ipInt[0] * 256 * 256 * 256 + +ipInt[1] * 256 * 256 + ipInt[2] * 256 + ipInt[3];
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}
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public static void main(String[] args) {
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System.out.println(getLocalIP());
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}
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}
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