Except for the groupId/artifactId error you noted above, I followed the instructions exactly and had no issue using Intellij.  I have no expertise in Netbeans, but I would first suggest checking your maven repository for the plugin noted in your orig...

Yeah, I noticed that too.  I'll see if I can find out who owns that page and get it fixed.

Ok, I've not followed those instructions -- let me give it a run and see what happens. 

Can you tell us whether you're building an application or a servlet, and post the snippet of code that is failing?