How to obtain the IP address of a remote user in the Nginx + Tomcat cluster

: This article describes how to obtain the IP address of a remote user in the Nginx + Tomcat cluster. For more information about PHP tutorials, see. Reprinted: http://pengranxiang.iteye.com/blog/1450558

When deploying Nginx + Tomcat clusters, backend Tomcat needs to obtain the user's IP address.

Java code

1. Request. getRemoteAddr ()

The obtained intranet address is always the Nginx intranet address.

As the user request passes through Nginx and Nginx forwards the request to Tomcat, Tomcat always obtains the Nginx Ip address.

To obtain the real user IP address, you need to make some configuration on Nginx.

Location/lower settings
Proxy_set_header X-Real-IP $ remote_addr;
Proxy_set_header Host $ host;
Restart nginx.

Java code to obtain the real IP address from the request header

Java code

1. Request. getHeader ("X-Real-IP ")

The above describes how to solve the problem of obtaining remote user IP addresses in the Nginx + Tomcat cluster, including some content, and hope to help friends who are interested in the PHP Tutorial.