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package com.yiboshi.science.utils;
import javax.servlet.http.HttpServletRequest;
/**
* class: 获取客户端IP地址
* create by: dracula$
* description:
* create time: 2021-09-13$
*
* @param: $
*/
public class CustomerIPAddress {
public static String getIPAddress(HttpServletRequest request) {
String ip = null;
//X-Forwarded-For：Squid 服务代理
String ipAddresses = request.getHeader("X-Forwarded-For");
if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
//Proxy-Client-IP：apache 服务代理
ipAddresses = request.getHeader("Proxy-Client-IP");
}
if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
//WL-Proxy-Client-IP：weblogic 服务代理
ipAddresses = request.getHeader("WL-Proxy-Client-IP");
}
if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
//HTTP_CLIENT_IP：有些代理服务器
ipAddresses = request.getHeader("HTTP_CLIENT_IP");
}
if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
//X-Real-IP：nginx服务代理
ipAddresses = request.getHeader("X-Real-IP");
}
//有些网络通过多层代理，那么获取到的ip就会有多个，一般都是通过逗号（,）分割开来，并且第一个ip为客户端的真实IP
if (ipAddresses != null && ipAddresses.length() != 0) {
ip = ipAddresses.split(",")[0];
}
//还是不能获取到，最后再通过request.getRemoteAddr();获取
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
ip = request.getRemoteAddr();
}
return ip.equals("0:0:0:0:0:0:0:1") ? "127.0.0.1": ip;
}
}