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63 lines
2.1 KiB
63 lines
2.1 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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public class IpUtils {
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/**
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* 将字符串形式IP地址127.0.0.1转换10234564321
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*
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* @param strIP
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* @return
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*/
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public static long ip2Long(String strIP) {
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long[] ip = new long[4];
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// 先找到IP地址字符串中.的位置
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int position1 = strIP.indexOf(".");
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int position2 = strIP.indexOf(".", position1 + 1);
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int position3 = strIP.indexOf(".", position2 + 1);
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// 将每个.之间的字符串转换成整型
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ip[0] = Long.parseLong(strIP.substring(0, position1));
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ip[1] = Long.parseLong(strIP.substring(position1 + 1, position2));
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ip[2] = Long.parseLong(strIP.substring(position2 + 1, position3));
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ip[3] = Long.parseLong(strIP.substring(position3 + 1));
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return (ip[0] << 24) + (ip[1] << 16) + (ip[2] << 8) + ip[3];
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}
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public static String getIp(HttpServletRequest request) {
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String remoteIp = request.getRemoteAddr();
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// 多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
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if (remoteIp != null && remoteIp.length() > 15) {
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if (remoteIp.indexOf(",") > 0) {
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remoteIp = remoteIp.substring(0, remoteIp.indexOf(","));
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}
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}
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return remoteIp;
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}
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/**
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* 将字符串形式IP地址转换long类型
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* @param ip
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* @return
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*/
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public static long getIp2long(String ip) {
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ip = ip.trim();
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String[] ips = ip.split("\\.");
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long ip1 = Integer.parseInt(ips[0]);
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long ip2 = Integer.parseInt(ips[1]);
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long ip3 = Integer.parseInt(ips[2]);
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long ip4 = Integer.parseInt(ips[3]);
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return ip1 * 256 * 256 * 256 + ip2 * 256 * 256 + ip3 * 256 + ip4;
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}
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/**
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* 判断一个ip地址是否在某个ip段范围内
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* @param ip
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* @param startIP
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* @param endIP
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* @return
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*/
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public static boolean ipExistsInRange(String ip, String startIP, String endIP) {
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return (getIp2long(startIP)<=getIp2long(ip)) && (getIp2long(ip)<=getIp2long(endIP));
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}
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}
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