Apache Struts
Apache Struts is a free, open-source, MVC framework for creating elegant, modern Java web applications. It provides a clean separation between the model, view, and controller layers with a powerful convention-over-configuration approach, interceptor-based AOP support, type-safe configuration, and built-in REST plugin. Apache Struts is maintained by the Apache Software Foundation and is widely used in enterprise Java web development.
APIs
Apache Struts REST Plugin
The Struts REST Plugin provides a convention-based REST API framework for building RESTful services. It maps HTTP methods to action methods (GET→index/show, POST→create, PUT→upd...
Features
Zero-XML configuration with naming conventions for action and result mapping.
AOP-style interceptors for cross-cutting concerns like validation, logging, and security.
Automatic type conversion between HTTP request parameters and Java types.
Object-Graph Navigation Language for dynamic data binding and expression evaluation.
Template composition via Apache Tiles for reusable page layouts.
Convention-based REST API support with content type negotiation.
Native Spring Framework integration for dependency injection.
Use Cases
Build large-scale Java web applications with clean MVC separation.
Create REST APIs using the Struts REST plugin with JSON/XML content negotiation.
Complex form processing with server-side validation and type conversion.
Integrations
Native Spring IoC container integration for dependency injection.
Hibernate ORM integration for database persistence in action classes.
Template composition framework for reusable page layouts and components.
FreeMarker template engine support as an alternative to JSP views.
Apache Velocity template engine for HTML view rendering.