Page History

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As of Struts 2.0.2, Spring is a plugin (WW-1499). If an application specifies the Spring object factory in struts.properties, also include the struts2-spring-plugin.jar on the application's classpath.
- Ideally, move the object factory setting to the XML configuration, using Constant Configuration].
The Ajax theme is updated to Dojo 0.4, and some tag attributes have changed.

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Codebehind Plugin: Reduce mundane configuration by using "page controller" conventions (WW-1515).
Spring Plugin: Integrate Spring with your application using a plugin (WW-1515)1499). Or, if you prefer, use the Plexus Plugin instead.
Zero Configuration: Optionally, eliminate or reduce XML configuration with convention and annotation . (wqwWW-1491).
Showcase: Explore multiple file uploading through our new example . (WW-1479).
Action tag: Eliminate unwanted exceptions with the new flush attribute (WW-1472).
Checkboxlist tag: Use Maps with CheckboxList (WW-14721471).
Roles Interceptor: Integrate JAAS with a new interceptor - now on the default stack . (WW-1469).
Localized Links: Use the new key attribute to streamline link markup . (WW-1458).
Constant Configuration: Override factory default settings from any XML configurtion document, including web.xml! (WW-1421).

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Internal Changes

Checkboxlist tag: CheckboxList with value as Map should have the map keys compared instead of its value. (WW-1471)
Internally, Struts 2 uses it's Dependency Injection: The framework now uses its own dependency injection container, based on Google Guice. Applications are free to use Spring, Plexus, or even your own a local copy of Guice for any dependency injection needs. Actions can still be instantiated via the Spring configuration, when desired (WW-1499), but Spring is entirely optional now.

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