Java Portlet Specification

The Java Portlet Specification defines a contract between the portlet container and portlets and provides a convenient programming model for portlet developers.

JSR 168

The Java Portlet Specification V1.0 was developed under the Java Community Process as Java Specification Request JSR 168.

The Java Portlet Specification V1.0 introduces the basic portlet programming model with:
* two phases of action processing and rendering in order to support the Model-View-Controller pattern.
* portlet modes, enabling the portal to advise the portlet what task it should perform and what content it should generate
* window states, indicating the amount of portal page space that will be assigned to the content generated by the portlet
* portlet data model, allowing the portlet to store view information in the render parameters, session related information in the portlet session and per user persistent data in the portlet preferences
* a packaging format in order to group different portlets and other J2EE artifacts needed by these portlets into one portlet application which can be deployed on the portal server.

JSR 286

JSR-286 is the Java Portlet specification v2.0 as developed under the JCP and created in alignment with the updated version 2.0 of WSRP. [cite web | url = http://www.jcp.org/en/jsr/detail?id=286 | title = JSR 286: Portlet Specification 2.0] It was developed to improve on the short-comings on version 1.0 of the specification, JSR-168. Some of its major features include: [cite web | last = Hepper | first = Stefan | title = What's new in the Java Portlet Specification V2.0 (JSR 286)? | publisher = IBM | date = 18 March 2008 | url =http://www.ibm.com/developerworks/websphere/library/techarticles/0803_hepper/0803_hepper.html ]

* Inter-Portlet Communication through events and public render parameters
* Serving dynamically generated resources directly through portlets
* Serving AJAX or JSON data directly through portlets
* Introduction of portlet filters and listeners

Portal servers

JSR 168 compliant portal servers:

Open Source Solutions

* GridSphere
* JBoss Enterprise Portal Platform
* [http://portals.apache.org/pluto/ Apache Pluto]
* [http://portals.apache.org/jetspeed-2/ JetSpeed Portal 2]
* eXo Platform Portal
* Liferay Portal
* OpenPortal
* uPortal
* mvnForum

Commercial Portlet Solutions

* IBM WebSphere Portal
* Sun Java System Portal Server
* BEA Weblogic Portal
* Oracle iAS Portal
* Vignette App Portal
* SAP Enterprise Portal
* TIBCO PortalBuilder

ee also

* Web Services for Remote Portlets (WSRP)
* JSR 168 Portlet Catalog

References

External links

* [http://www.jcp.org/en/jsr/detail?id=168 JSR 168]
* [http://www.jcp.org/en/jsr/detail?id=286 JSR 286] (version 2.0 of the Java portlet specification)
* [http://portals.apache.org/pluto/ JSR 168 Open Source Reference Implementation at Apache]
* [http://community.java.net/portlet/ Open source JSR 168/WSRP community] at http://java.net
* [http://soap-portlet.sourceforge.net/ Dynamic SOAP Portlet] , for dynamic integration of SOAP services in JSR-168 portals