New Maven Resource Compiler
March 17th, 2009 by Anton MakeevIntelliJ IDEA now uses a special compiler to process Maven resources as specified in the pom file, with includes/excludes and filters.
Resource folders are not set as Source Folders anymore because they do not fit in the IntelliJ IDEA model.

To use the new functionality please either manually reset all your resource folders in the Project Structure dialog or re-import the project from scratch. Although you may skip this step, the native IntelliJ IDEA compiler will interfere with the Maven Compiler and copy unnecessary files or rewrite already processed ones from these folders.
March 17th, 2009 at 8:04 am
This sounds interesting. Is this supported in IDEA 8.1 or the Maia EAP?
March 17th, 2009 at 8:16 am
I’ll integrate it in the 8.1 soon, should not be a problem.