nginx反向代理后sring boot获取不到真实IP

现在的项目都是vue+spring boot前后端分离，vue放在nginx下，为了避免跨域大家都会用nginx将请求后端的接口用nginx反向代理，这样会导致springboot获取不到真实IP；需要改下面代码

1.nginx配置

location /ElensBackEnd/ {
	        proxy_pass http://localhost:18081/ElensBackEnd/;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-Host $server_name;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			client_max_body_size  1000m;
	    }

java代码如下：

package com.Util;

import lombok.extern.java.Log;

import java.net.InetAddress;
import java.net.UnknownHostException;

import javax.servlet.http.HttpServletRequest;

@Log
public class IpUtil {

    /***
     * 获取客户端ip地址(可以穿透代理)
     * @param request
     * @return
     */
    public static String getClientIpAddr(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");
        log.info("X-Forwarded-For:" + ip);
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
            log.info("Proxy-Client-IP:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
            log.info("WL-Proxy-Client-IP:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            log.info("HTTP_X_FORWARDED_FOR:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED");
            log.info("HTTP_X_FORWARDED:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_CLUSTER_CLIENT_IP");
            log.info("HTTP_X_CLUSTER_CLIENT_IP:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
            log.info("HTTP_CLIENT_IP:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_FORWARDED_FOR");
            log.info("HTTP_FORWARDED_FOR:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_FORWARDED");
            log.info("HTTP_FORWARDED:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_VIA");
            log.info("HTTP_VIA:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("REMOTE_ADDR");
            log.info("REMOTE_ADDR:" + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
            log.info("getRemoteAddr:" + ip);
        }
        return ip;
    }

}

重点：我在windows上面的时候nginx监听端口是8080没问题，8081就会有问题，简直有毒；希望遇到的小伙伴绕过此坑。

  server {
        listen       8080;
        server_name  localhost;

 

本文地址：https://blog.csdn.net/wangxingwu1/article/details/107383173