I'm using M2E for maven integration with eclipse. My unit tests reference property files in the resources/ directory. Well, everything fine in the command line test (mvn test). However, in Eclipse, the resources couldn't be found.
Check the Java Build Path, there, all resources entries are marked with Excluded: **. (I deem it should only exclude .java/.class files) Then, after removed the exclude pattern, the problem fixed.
I'm not sure whether I should remove all Excluded ** by hand, or maybe I doesn't use M2E correctly.
P.S. The projects are imported by Existing Maven Projects.
It does this on purpose, to allow the maven-resource-plugin to do the resource copying. You might have filters enabled after all. I have pestered the m2e list about this, you are welcome to file a bugzilla and join in the pestering. it is really annoying.
来源：https://stackoverflow.com/questions/5137584/maven-eclipse-the-default-build-path-for-resources-excluded-everything