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Struts is a popular framework for building web applications in Java. Struts is based upon a classic Model-View-controller design which separates the layers of an application into data (Model), presentation (View) and actions (Controller). Struts provides elements which map into these layers and which are used to build an application. Specifically, Struts defines the following concepts:
A Struts Form Bean is used as an intermediary to exchange data between the web browser and the web application.
A Struts Action is used as a delegate between the user and the web application. As the user interacts with the web application, selecting links, submitting forms, they indirectly interact with the Struts Actions. Struts actions are implemented as Java classes that can receive the data coming from the user (typically as Struts form beans), make decisions on that data and then decide how to act upon it.
Once a Struts action has completed its processing, it sends a response which directs the Struts framework to return a certain page to the user. Struts allows pages to have aliases so that page names do not need to be hard coded into the Java Action classes. These aliases are called Struts Forwards.
Struts is a very powerful framework with many features including a rich JSP tag library, plug-ins for client and server-side validation, page composition, localization and more. Workshop Studio and Workshop for Struts provide advanced support for the Struts library and for developing Struts applications. Please refer to the resources listed below for more information.
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