Portals and portlets Sean C. Sullivan October 24, 2006 Portland Java Users Group

Overview Portals Portal servers Java Portlets Portlet programming Portlet deployment Demo

What is a portal? A portal is a web based application that [...] provides personalization, authentication, content aggregation from different sources and hosts the presentation layer of information systems source: Java Portlet 2.0 specification

Portal servers Liferay JBoss Portal Apache JetSpeed 2 Apache Pluto eXo platform uPortal IBM Websphere Portal BEA WebLogic Portal Sun Portal Server Oracle Portal

Portal server features personalization single sign-on security: users, groups, roles portlet admin: deploy, undeploy page layout pre-built portlets

Liferay portal demo

Portlet fragments The content generated by a portlet is also called a fragment. A fragment is a piece of markup (e.g. HTML, XHTML, WML) adhering to certain rules and can be aggregated with other fragments to form a complete document. The content of a portlet is normally aggregated with the content of other portlets to form the portal page. source: Java Portlet 2.0 specification

Java Portlet specifications Portlet 1.0 –JSR-168 Portlet 2.0 –JSR-286

Java Portlet API javax.portlet.Portlet javax.portlet.GenericPortlet javax.portlet.ActionRequest javax.portlet.ActionResponse javax.portlet.RenderRequest javax.portlet.RenderResponse

javax.portlet.Portlet public void destroy() public void init(PortletConfig cfg) public void processAction(ActionRequest, ActionResponse) public void render(RenderRequest, RenderResponse)

javax.portlet.GenericPortlet protected void doView(...) protected void doEdit(...) protected void doHelp(...) protected void processAction(...)

Hello World Portlet public class HelloWorldPortlet extends javax.portlet.GenericPortlet { public void doView(RenderRequest req, RenderResponse resp) { resp.setContentType("text/html"); PrintWriter w = resp.getWriter(); w.println("Hello world"); }

JBoss Portal demo

Portlet requests 1.Action requests 2.Render requests

Portlet modes javax.portlet.PortletMode 1.EDIT 2.VIEW 3.HELP

Portlet window states javax.portlet.WindowState 1.MAXIMIZED 2.MINIMIZED 3.NORMAL

Portlet deployment WAR web.xml portlet.xml

What's new in Java Portlet 2.0? Resource serving Events Portlet filters alignment with WSRP 2.0

Additional topics Caching CSS Internationalization File upload Inter-portlet communication Wrapping existing applications WSRP

Resources