dependency:tree on multi-module maven project, use
mvn compile dependency:tree instead1.
Otherwise, the POM Editor in M2Eclipse (Maven integration for Eclipse) is very good, and it includes a hierarchical dependency view.
1If you don’t compile, you might get error
Failed to execute goal on project baseproject: Could not resolve dependencies for project com.company:childproject:jar:1.0.0: Could not find artifact. This might happen because
dependency:tree command doesn’t build projects and doesn’t resolve dependencies, and your projects are not installed in maven repository.