The Definitive Guide to Grails

The rise of Ruby on Rails has signified a huge shift in how we build web applications today; it is a fantastic framework with a growing community. There is, however, space for another such framework that integrates seamlessly with Java. Thousands of companies have invested in Java, and these same companies are losing out on the benefits of a Rails-like framework. Enter Grails.
Grails is not just a Rails clone. It aims to provide a Rails-like environment that is more familiar to Java developers and employs idioms that Java developers are comfortable using, making the adjustment in mentality to a dynamic framework less of a jump. The concepts within Grails, like interceptors, tag libs, and Groovy Server Pages (GSP), make those in the Java community feel right at home.
Grails' foundation is on solid open source technologies such as Spring, Hibernate, and SiteMesh, which gives it even more potential in the Java space: Spring provides powerful inversion of control and MVC, Hibernate brings a stable, mature object relational mapping technology with the ability to integrate with legacy systems, and SiteMesh handles flexible layout control and page decoration.
Grails complements these with additional features that take advantage of the coding-by-convention paradigm such as dynamic tag libraries, Grails object relational mapping, Groovy Server Pages, and scaffolding.
Graeme Rocher, Grails lead and founder, and Jeff Brown bring you completely up-to-date with their authoritative and fully comprehensive guide to the Grails framework. You'll get to know all the core features, services, and Grails extensions via plug-ins, and understand the roles that Groovy and Grails are playing in the changing Web.


Graeme Rocher is an experienced software engineer, consultant and dynamic language expert. Graeme is project lead of the open source Grails web application framework (Grails.org) and author of The Definitive Guide to Grails. In Graeme's role as head of Grails development at SpringSource, the professional open source services company behind the Spring framework, Graeme leads the development of the Grails web framework and provides consulting, training and support to SpringSource's clients. Graeme is a frequent speaker at industry conferences on subjects related to Groovy, Grails and dynamic languages in Java. Prior to joining SpringSource Graeme co-founded G2One the Groovy/Grails Company which was later acquired by SpringSource.