Tomcat 8 throwing - org.apache.catalina.webresources.Cache.getResource Unable to add the resource

Question

I have just upgraded Tomcat from version 7.0.52 to 8.0.14.

I am getting this for lots of static image files:

org.apache.catalina.webre

Answer 1

This isn’t a solution in the sense that it doesn’t resolve the conditions which cause the message to appear in the logs, but the message can be suppressed by appending the following to conf/logging.properties:

org.apache.catalina.webresources.Cache.level = SEVERE

This filters out the “Unable to add the resource” logs, which are at level WARNING.

In my view a WARNING is not necessarily an error that needs to be addressed, but rather can be ignored if desired.