In this three-part series, the articles describe new features available in the Java Portlet Specification (JSR ) and extensions supported by OpenPortal. The Java platform provides an standard referred to as JSR that standarizes how portlets interact with portlet containers and ensures compatibility across. In , Java Portlet Specification (JSR) first defined portal and For a detailed description of these features, see the tutorial OSGi and Modularity. Note .
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A good user experience is the measure of a well-designed site. Compile your Java source files. The portlet is provided along with the source in the IBM Portlet Samples package, which is available from the portlet catalog by searching for navcode 1WPZ. Hello World provides the fewest methods required for a portlet.
Creating a simple portlet
This article needs additional citations for verification. A portlet container contains portlets and manages their life cycles.
When you develop portlets for Liferay Portal, you can leverage all the features defined by the portlet specification. It was released in June If you suspect a classloading problem, ensure that portley required classes are in portpet appropriate classpath according to the classloading hierarchy.
For example, a message boards or wiki portlet is best suited on its own page. The graphic illustrates where WebSphere Portal Express and portlet applications fit into the classloading hierarchy.
For example, a portlet application might use a portlet descriptor as follows: Page layout tags let you create layouts using Bootstrap 3 within your portlets. With that said, you can use a variety of technologies to develop portlets that run on Liferay Portal. Portlets also differ from servlets by having distinct modes and window states. Refer to portleg documentation for Rational Application Developer for complete setup instructions. Each portlet phase executes different operations: Unsourced material may be challenged and removed.
See Sample portlets for more information. When constructing XMLAccess scripts for use in installing standard portlets, use the following values: Portlet standards platform portler application programming interfaces that are intended to enable software developers to create portlets that can be plugged into any portal supporting the standards.
A portlet container is not responsible for aggregating the content produced by the portlets; the portal itself handles aggregation. A portlet container runs portlets and provides them with the required runtime environment. A Java portlet resembles a Java Servletbut produces fragments rather than complete documents, and is not bound by a URL.
Because Windows limits the maximum path length to characters, the name of the WAR file must be less than 25 characters.
For those who want to adopt portals certainly need many and variety of portlets to deploy and run. Do you want to use a portlet development framework with a UI component model that makes it easy to develop sophisticated, rich You can place multiple portlets on a single page. Portlets can be placed on pages by users or portal administrators, who can place several different portlets on a single page. A portlet responds to requests from a tutlrial client with and generates dynamic content.
Articles needing additional references from January All articles needing additional references. So what do these specifications define? That is, the WAR file name can be changed, but the uid must indicate the original uid used during portlet installation. Another difference is that portlets run only in a portal server, like the one in Liferay Portal. Standard portlets Table 2. You can set up the run time environment for debugging portlets on the local development machine or on a remote server.
To facilitate deployment of portlet applications and complex portlets, you can provide a portlet configuration file that can tktorial invoked by the XML configuration interface XMLAccess. This is the default window state. The recently released Java Portlet Specification 3.
Creating a simple portlet
Hence a portlet or collection of portlets resembles a web-based application that is hosted in a portal. If you are not using wizards to develop portlets, the following topics describe the mechanics of building a simple portlet. Typically, following the desktop metaphora portal page is displayed as a collection of non-overlapping portlet windows, where each portlet window displays a portlet.
Liferay is an open platform in an ecosystem of open platforms. The Hello World portlet provides an introduction to writing your first portlet. The portlet can 28 on a page that contains other portlets. For deployers, it’s easy to keep a single set of solution and deploy it on many.