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243 lines
7.4 KiB
243 lines
7.4 KiB
3 years ago
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package com.fr.plugin;
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import javax.servlet.http.HttpServletRequest;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.regex.Pattern;
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public class IPUtils {
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/**
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*
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* getAvaliIpList:(根据IP白名单设置获取可用的IP列表).
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*
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* @date 2020-11-11 下午02:50:20
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* @return
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*/
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private static Set<String> getAvaliIpList(String allowIp) {
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Set<String> ipList = new HashSet<String>();
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for (String allow : allowIp.replaceAll("\\s", "").split(",")) {
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if (allow.indexOf("*") > -1) {
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String[] ips = allow.split("\\.");
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String[] from = new String[] { "0", "0", "0", "0" };
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String[] end = new String[] { "255", "255", "255", "255" };
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List<String> tem = new ArrayList<String>();
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for (int i = 0; i < ips.length; i++)
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if (ips[i].indexOf("*") > -1) {
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tem = complete(ips[i]);
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from[i] = null;
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end[i] = null;
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} else {
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from[i] = ips[i];
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end[i] = ips[i];
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}
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StringBuffer fromIP = new StringBuffer();
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StringBuffer endIP = new StringBuffer();
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for (int i = 0; i < 4; i++)
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if (from[i] != null) {
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fromIP.append(from[i]).append(".");
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endIP.append(end[i]).append(".");
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} else {
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fromIP.append("[*].");
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endIP.append("[*].");
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}
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fromIP.deleteCharAt(fromIP.length() - 1);
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endIP.deleteCharAt(endIP.length() - 1);
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for (String s : tem) {
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String ip = fromIP.toString().replace("[*]",
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s.split(";")[0])
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+ "-"
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+ endIP.toString().replace("[*]", s.split(";")[1]);
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if (validate(ip)) {
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ipList.add(ip);
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}
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}
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} else {
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if (validate(allow)) {
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ipList.add(allow);
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}
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}
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}
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return ipList;
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}
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/**
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* 在添加至白名单时进行格式校验
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*
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* @param ip
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* @return
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*/
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private static boolean validate(String ip) {
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for (String s : ip.split("-"))
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if (!pattern.matcher(s).matches()) {
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return false;
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}
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return true;
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}
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// IP的正则,这个正则不能验证第一组数字为0的情况
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private static Pattern pattern = Pattern
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.compile("([1-9]\\d?|1\\d{2}|2[01]\\d|22[0-3])\\."
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+ "(1\\d{1,2}|2[0-4]\\d|25[0-5]|\\d{1,2})\\."
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+ "(1\\d{1,2}|2[0-4]\\d|25[0-5]|\\d{1,2})\\."
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+ "(1\\d{1,2}|2[0-4]\\d|25[0-5]|\\d{1,2})");
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/**
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* 对单个IP节点进行范围限定
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*
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* @param arg
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* @return 返回限定后的IP范围,格式为List[10;19, 100;199]
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*/
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private static List<String> complete(String arg) {
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List<String> com = new ArrayList<String>();
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if (arg.length() == 1) {
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com.add("0;255");
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} else if (arg.length() == 2) {
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String s1 = complete(arg, 1);
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if (s1 != null)
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com.add(s1);
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String s2 = complete(arg, 2);
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if (s2 != null)
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com.add(s2);
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} else {
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String s1 = complete(arg, 1);
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if (s1 != null)
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com.add(s1);
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}
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return com;
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}
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private static String complete(String arg, int length) {
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String from = "";
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String end = "";
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if (length == 1) {
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from = arg.replace("*", "0");
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end = arg.replace("*", "9");
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} else {
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from = arg.replace("*", "00");
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end = arg.replace("*", "99");
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}
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if (Integer.valueOf(from) > 255)
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return null;
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if (Integer.valueOf(end) > 255)
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end = "255";
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return from + ";" + end;
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}
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/**
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*
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* checkLoginIP:(根据IP,及可用Ip列表来判断ip是否包含在白名单之中).
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* @date 2017-4-17 下午03:01:03
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* @param ip
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* @param ipList
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* @return
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*/
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private static boolean checkLoginIP(String ip, Set<String> ipList) {
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if (ipList.isEmpty() || ipList.contains(ip))
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return true;
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else {
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for (String allow : ipList) {
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if (allow.indexOf("-") > -1) {
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String[] from = allow.split("-")[0].split("\\.");
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String[] end = allow.split("-")[1].split("\\.");
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String[] tag = ip.split("\\.");
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// 对IP从左到右进行逐段匹配
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boolean check = true;
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for (int i = 0; i < 4; i++) {
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int s = Integer.valueOf(from[i]);
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int t = Integer.valueOf(tag[i]);
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int e = Integer.valueOf(end[i]);
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if (!(s <= t && t <= e)) {
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check = false;
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break;
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}
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}
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if (check) {
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return true;
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}
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}
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}
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}
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return false;
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}
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/**
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*
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* checkLoginIP:(根据IP地址,及IP白名单设置规则判断IP是否包含在白名单).
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* @date 2017-4-17 下午03:01:37
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* @param ip
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* @param ipWhiteConfig
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* @return
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*/
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public static boolean checkLoginIP(String ip,String ipWhiteConfig){
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Set<String> ipList = getAvaliIpList(ipWhiteConfig);
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return checkLoginIP(ip, ipList);
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}
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/**
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* 获取真实IP 客户逻辑
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* @param request
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* @return
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*/
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public static String getRealIp(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("X-Real-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("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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// 处理多IP的情况(只取第一个IP)
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if (ip != null && ip.contains(",")) {
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String[] ipArray = ip.split(",");
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ip = ipArray[0];
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}
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return ip;
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}
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/**
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* 判断是否是内网IP "192.168.1.1," + //设置单个IP的白名单
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* "192.168.*.2," + //设置ip通配符,对一个ip段进行匹配
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* "192.168.3.17-192.168.3.38"; //设置一个IP范围
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* @param ip
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* @return
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*/
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public static boolean isInnerIP(String ip,String ipWhite) throws IOException {
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String ip4[]=ip.split("\\.");
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if(ip4.length==4) {
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return checkLoginIP(ip,ipWhite);
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}else{
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return false;
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}
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}
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}
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