Using a module that provides a Spring XML namespace and integration API is muscle memory for most people: add the .xsd to the imported XML schemas for the configuration file, maybe enable a annotation-driven variant if it's available, autocomplete some XML stanzas, and then you're set! But what about Java configuration? Java configuration has been around in some form since at least 2005. It was merged into the core framework in 2009 and since then we've seen a slew of new Java configuration-powered DSLs pop up. 2013, in particular, has seen alpha-or-better cuts of Java configuration support for Spring MVC, Spring Security (and Spring Security OAuth), Spring Batch, Spring Social, Spring Data (including all the modules under it: REST, MongoDB, JPA, Neo4j, Redis, etc), Spring HATEOAS, and more all provide milestone-or-better cuts of a Java configuration integration. Tomcat 7 (and all Servlet 3-compatible containers) offer a programmatic alternative to web.xml. This provides another great integration hook for modules that wish to integrate with the web container, removing the configuration burden from the user. There's a lot of power here and it's easy to get started if you know what to look for. In this talk, join Spring Developer Advocate Josh Long and Spring-core commmitter, all-around nice guy, and Spring Boot ninja Phil Webb as they introduce the Java configuration support in the various Spring projects, show how to approach them when integrating them into your code, and - if the situation demands - how to write your own Java configuration DSL.
Source: http://www.youtube.com/watch?v=-4BQXNufpbQ
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