freeEbook_Rimple
About the Spring framework and its ecosystem Agile and adaptive development on the leading edge
by Ken Rimple, author of Spring Roo in Action

Spring and JPA
From Spring in Action, Fourth Edition
by Craig Walls

JPA setup and DAO
From Spring Roo in Action
by Ken Rimple and Srini Penchikala

Spring and integration
From Spring Integration in Action
by Mark Fisher, Jonas Partner, Marius Bogoevici, and Iwein Fuld

Processing batch jobs
From Spring Batch in Action
by Arnaud Cogoluegnes, Thierry Templier, Gary Gregory, and Olivier Bazoud

Integrating Spring with JMS
From Spring Integration in Action
by Mark Fisher, Jonas Partner, Marius Bogoevici, and Iwein Fuld

Rapid application development using Grails
From Grails in Action, Second Edition
by Glen Smith and Peter Ledbrook

Spring does that? (PDF)