I'm trying to migrate to Log4j2, and things looked promising when I spotted Log4jContextListener.
However, there are too many holes.
Firstly, I tried using classpath: as a scheme, and nothing blew up, so I assumed I'd got it right.
Then I looked at the code (which shouldn't be how we find out) and eventually discovered some code relating to a 'classloader' scheme.
Still silent failure. It seems that the classpath is not being searched, perhaps just the WAR classloader, not the JARs in WEB-INF/lib.
Next I tried omitting the / (i.e. using classloader:log4j2.xml) and got a NullPointerException.
Can you please document what schemes are supported and what you expect them to do, and not fail silently when a configuration file is specified, but nothing happens.