Abstract: In order to solve the incompatibility between different portlet application providers and portal providers, JCP issues the Java Portlet Specification to specify how portlet should be developed to be integrated into portals. I}he complex programming interface and the Portlet Context defined in JSR make it complicated to develop a portlet application.We proposed an MVGbased framework OPDS with simpler API and easier deployment to make the process more efficicnt and enhance the reusability of resources in portlet applications.

Key words: Portal, Portlet application, MVC, Framework