This JSR development tutorial shows how to master request-response programming using the PortletRequest and PortletResponse objects of the Portlet JSR (Portlet ) defines a lifecycle for events, so that eventing is name as defined in the previous code example in the portlet section of the file. 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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Creating a simple portlet
In many ways, writing your application as a portlet is easier than writing a standalone application. In the third method the action phase is triggered first then the render phase is triggered, which outputs some content back to the web browser based on the available render parameters.
For more information, see The XML configuration interface. InJava Portlet Specification 1. The three states defined by the JSR specification are:. This avoids having one XML tag within another.
Application class loaders AC1application class loaders AC2and application class loaders AC3 are portlet applications that branch from application extensions. This section tells the portal to only output HTML. It is perfectly valid to bring the tools Execute mvn package in this directory. All JSF portlets pottlet javax. The following is an example of the directory structure of the SimplestHelloWorld portlet:.
This class is part of the JBoss Portlet Bridge This is a mandatory parameter to define what’s the default page to display. More than one portlet application may be defined in this file:. Maven versions can be downloaded from maven. It is recommended to extend GenericPortlet for most cases.
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.
Portlets are responsible for generating markup fragments, as they are included on a page and are surrounded by other portlets. The bridge then negotiates the interactions between the two layers. Maximized A portlet may be the only portlet displayed on this page. This is the mandatory descriptor for web applications. In this file, the following elements are supported:.
There are number of differences between the elements in this example and the corresponding Figure 8. Standard portlets Table 2. For example, a filter can transform the content of portlet requests and portlet responses. Window states mimic window behavior in a traditional desktop environment: Do you wish you could use npm and npm packages in your portlets?
The portlet takes up an entire page. Please check the source code to see the difference with Method 1.
Creating a simple portlet
So what do these specifications define? Application Monitoring Filter supports four lifecycle phases as the order below: When you develop portlets for Liferay Portal, you can leverage all the features defined by the portlet specification. Help Provides information to the user as to how to use the portlet.
Porylet all this in other types of web apps would require manual re-coding. GenericFacesPortlet as portlet class.
Maven This example is using Maven to compile and build the web archive. Get a request dispatcher on a file located within the web archive. One when the portlet is rendered and two when the portlet is actioned then rendered.
The declared MIME types must match the capability of the portlet. Rational Application Developer provides wizards to help you build, test, and deploy portlets using all of the APIs and related classes and interfaces available in the portlet run time environment. Hello World provides the fewest methods required for a portlet. For example, a message boards or wiki portlet is best suited on its own page.