In this exclusive article for TheServerSide.com, Mark Spritzler explores the pertinent classes and interfaces that you need to work with in order to customize your Spring based user authentication system.
The tutorial uses a Hibernate based user repository, but don't let that scare you, because the manner in which the back end is accessed is tertiary to the point - you could just as easily be using JDBC, JPA or LDAP. The point is, it's easy to customize User authentication and application security if you're using the Spring framework.
Securing Applications Using the Spring Framework by Mark Spritzler
--------------