package com.gkhy.exam.common.utils;
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import javax.servlet.http.HttpServletRequest;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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/**
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* 请求工具类
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*/
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public class RequestUtils {
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/**
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* 获取请求真实IP地址
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*/
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public static String getRequestIp(HttpServletRequest request) {
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//通过HTTP代理服务器转发时添加
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String ipAddress = request.getHeader("x-forwarded-for");
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if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
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ipAddress = request.getHeader("Proxy-Client-IP");
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}
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if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
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ipAddress = request.getHeader("WL-Proxy-Client-IP");
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}
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if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
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ipAddress = request.getRemoteAddr();
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// 从本地访问时根据网卡取本机配置的IP
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if (ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")) {
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InetAddress inetAddress = null;
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try {
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inetAddress = InetAddress.getLocalHost();
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} catch (UnknownHostException e) {
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e.printStackTrace();
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}
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ipAddress = inetAddress.getHostAddress();
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}
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}
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// 通过多个代理转发的情况，第一个IP为客户端真实IP，多个IP会按照','分割
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if (ipAddress != null && ipAddress.length() > 15) {
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if (ipAddress.indexOf(",") > 0) {
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ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
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}
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}
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return ipAddress;
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}
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}
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