This is a template under construction for using Vaadin along with Spring Security.
It is based on @peholmst's hybrid security example located here
A blog post detailing his approach can be found here.
This template builds on top of that by using the more elaborate login screen from the maven archetype vaadin-archetype-application-example.
More information about working with this vaadin archetypes can be found here.
The template currently uses JDBC based authentication and provides a database creation script for a MYSQL database.