nginx做反向代理時,默認的配置后端獲取到的ip都是來自于nginx,如何轉發用戶的真實ip到后端程序呢?如是是java后端,用request.getRemoteAddr();獲取到的是nginx的ip地址,而不是用戶的真實ip.

修改nginx配置,如下:

upstream www.xxx.com {ip_hash;server serving-server1.com:80;server serving-server2.com:80; }server {listen www.xxx.com:80;server_name www.xxx.com;location / {proxy_pass http://www.xxx.cn;}proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; }

在原來配置的基礎上加入后面的三條指令,就可以用request.getHeader("X-Forwarded-For");獲取到訪客的ip了.

附:Java獲取客戶端ip的實現

private static final String[] IP_HEADER_CANDIDATES = {"X-Forwarded-For","Proxy-Client-IP","WL-Proxy-Client-IP","HTTP_X_FORWARDED_FOR","HTTP_X_FORWARDED","HTTP_X_CLUSTER_CLIENT_IP","HTTP_CLIENT_IP","HTTP_FORWARDED_FOR","HTTP_FORWARDED","HTTP_VIA","REMOTE_ADDR" };public static String getClientIpAddress(HttpServletRequest request) {for (String header : IP_HEADER_CANDIDATES) {String ip = request.getHeader(header);if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {int index = ip.indexOf(",");if (index != -1) {return ip.substring(0, index);}return ip;}}return request.getRemoteAddr(); }

參考

nginx反向代理獲取用戶真實ip

nginx 如何配置來獲取用戶真實IP

How to get Client IP Address using Java

Getting IP address of client

轉載于:https://www.cnblogs.com/okokabcd/p/9722620.html

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