These tutorials, CBTs and tips are designed to help any Java professional who is looking to acquire JSR development skills to become quickly adept at both. In this three-part series, the articles describe new features available in the Java Portlet Specification (JSR ) and extensions supported by OpenPortal. Portlet Tutorial, Java Portlet, Portlet Example, Java Portlet Tutorial, What is Portlet , JSR has introduced the using of annotations for controlling things were.

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The resources can be images, JSP files, Writing the portlet descriptorsand property files containing translated message text. This is especially useful for portlets that use messaging because these portlets have to be placed on the same page. If an installed portlet application includes a class yutorial, the portlet application class loader is an application class loader ACx under WebSphere Portal Express.

Application class loaders AC1application class loaders Tutoriakand application class loaders AC3 are portlet applications that branch from application extensions. You can also run the build-war-file or build-ear-file tasks to rutorial the. A portlet application exists as a structured hierarchy of 2286.

For more information, see The XML configuration interface. The portal administrator can download a WAR file from the Internet and then use the portal administration interface to install the portlet to WebSphere Portal Express. The XML configuration interface allows the portlet developer to specify places, pages, themes, skins, supported markups and clients, and other settings for a portlet application. 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.


Use this file if you use services from the Public API javadoc package. Compile your Java source files.

On a portal server running on Windows, installing a WAR file with a name that is more than 25 characters will result in an error. View the basic steps for creating a simple portlet, that include writing the portlet code, compiling java source, creating the JAR file, writing the portlet descriptors, setting up the WAR file directory structure, and packaging and deploying portlets.

For example, a portlet application might use a portlet descriptor as follows: It uses the jst response object to write simple output directly to the portal page. For portlet updates, the WAR file name must be the original name of the WAR file used to install the portlet application.

In the following graphic runtime classpath patches RCP is located at the top of the hierarchy. The WAR file format contains the Java classes and resources that make up one or more portlets in a portlet application.

If tutoorial are familiar with the web. Therefore, the portal server copies was. You can also build portlets using your own development environment and tools.

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Standard portlets Table 2. See Sample portlets for more information. Runtime classpath RP branches from runtime classpath patches. Refer to the documentation for Rational Application Developer for complete setup instructions.

Because Windows limits the maximum path length to characters, the name of the WAR file must be less than 25 characters.

Creating a simple portlet

When constructing XMLAccess scripts for use in installing standard portlets, use the following values: That is, the WAR file name can be changed, but the uid must indicate the original uid used during portlet installation.

There are number of differences between the elements in this example and the corresponding Figure 8. WebSphere Portal Express includes an administrative portlet for installing, uninstalling, and updating portlets.

Before you begin developing portlets, set up an environment that makes the tasks of writing, compiling, and testing portlets easier.

Creating a simple portlet

To do this, proceed as follows: Omit this tag if the portlet does not use this feature. Next, the portlet must be packaged in the JAR file format. The graphic illustrates where WebSphere Portal Express and portlet applications fit into the classloading hierarchy.