I'm developing a Struts2 webapp and I set up the logger. In the official documentation there is only the configuration for log4j, but nothing about log4j2. I started looking around and seems that Struts2 does not support log4j2. But the last question I've found is this one: 
Log4j2.0 is not working with Jboss 5
Struts2 doesn't support Log4j 2.0 right now, there are plans to add support for it during upcoming strutsathon.opensource.io
Since this question was answered in 2013, Struts2 still doesn't support Log4j2?
                        
You are lucky! In the latest version (
2.3.24), as you can see in the Releas Notes, it has been added: