How to create a Java EE 6 Maven application in Eclipse?
First make sure you have up-to-date Maven central index in Eclipse. Goto Window -> Show View -> Other -> Maven Repositories, select Global Repositories -> central, right click and choose Rebuild Index.
After it's done, create a new Maven project (using File -> New -> Other -> Maven Project), don't skip archetype selection, select project with artifactId webapp-javaee6 and create a Maven project.
To create a WAR file, run goal package.
To run this application using embedded Tomcat server open pom.xml and add plugin tomcat7-maven-plugin. Next run goal tomcat7:run. Open browser and you will see contents of index.jsp file.
This plugin maven-dependency-plugin is useless, so you can delete it.