Portlets form a design pattern where a Portal servlet combines one or more component Portlets into a web page. Because the portlets are written as components, they can be cleanly written and tested. Applications which currently use many servlet includes might be more cleanly written as portlet applications.

The Portal part of the pattern is a servlet which manages the portlets. In the Hello World example, the servlet is a simple "invoker" which calls a single portlet to render the page. Many applications will write their own Portal servlets, using Resin's generic portal library to handle the Portlet API.

This implementation is currently in development, API's may change somewhat and some functionality has not yet been implemented.

Generic Portal

The Generic Portal is an implementation of the basic functionality of a portal, released with an Apache open source license. It provides the basic building blocks for a portal that runs within a servlet container.

Portlet Tutorials

Basic Portlet Tutorials

Hello World Portlet Tutorial

Render Parameters Tutorial

Action Tutorial

Portlet Modes Tutorial

Portlet JSP Tutorial

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