What is JSF's most recent version?

JSF 2.3, which was introduced as a part of Java EE 8 in 2017, is the most recent JSF standard as of the time of this writing.

Table of contents

Introduction

JSF Application

Facelets Templates

3.1.

Templates Tags

Creating Facelets Template

4.1.

template.xhtml

4.2.

index.xhtml

4.3.

Output

Frequently Asked Question

5.1.

What is the JSF life cycle?

5.2.

What does JSF's managed bean mean?

5.3.

What is Facelet JSF?

5.4.

What does JSF's session scope mean?

5.5.

What is the use of the Spring integration?

Conclusion

Last Updated: Mar 27, 2024

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JSF Templates Tags

Author SHIVANGI MALL

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Introduction

A Java Web application framework called JavaServer Faces (JSF) is based on UI components. JSF is a server-based framework, and the JSF UI components' state and prescribed life cycles are represented on the server. In this article, we are going to discuss the JSF application and JSF template tags.

JSF Application

Web pages containing JSF UI components make up a JSF application. Additionally, a JSF application needs some configuration files ("faces-config.xml" and web.xml).

Managed Bean: A Java class that will be dynamically constructed when the JSF application is running is represented by the data elements of the JSF application (managed beans and backing beans). Which scope the bean is valid for can be specified (Session, Request, Application, or none) switching between web pages.
Data validators: Tools for examining the accuracy of user input
UI and model translation are done using data converters.

Facelets Templates

It is a technology that enables the user interface to be implemented. You can build a page that will serve as the foundation for the subsequent pages in an application by using the handy Facelets feature of templating. You may reuse code and avoid repeatedly developing similar pages by using templates. A vast number of pages in an application can nevertheless have a consistent look and feel thanks to the use of templates.

Templates Tags

Tag Function
Tag Function
ui:insert	used in template file. It specifies the information that should be in a template. You can change the contents of the ui:define tag.
ui:composition	utilizes the template property to load a template. It can also specify a set of elements that will be placed into an xhtml page.
ui:define	It is used to specify content that a template inserts into a page.
ui:include	It is used to encapsulate and reuse content for multiple pages.

Creating Facelets Template

The following steps are necessary to create a template. To create the Facelets Template in this case, we are using the Net Bean IDE.

1) Creating a new file.

2) Choose Facelets Template and JavaServer Faces, respectively, from the categories and file types.

3) Select the CSS layout for the Facelets template file.

The primary templating tag ui:insert is part of the Facelets tag collection. You can specify a page's default structure when creating a template page with this tag. The template page can be used as a model for other pages.

template.xhtml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml"  
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"  
xmlns:h="http://xmlns.jcp.org/jsf/html">  
<h:head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />  
<h:outputStylesheet name="./css/default.css"/>  
<h:outputStylesheet name="./css/cssLayout.css"/>  
<title>Facelets Template</title>  
</h:head>  
<h:body>  
<div id="top">  
<ui:insert name="top">Top</ui:insert>  
</div>  
<div>  
<div id="left">  
<ui:insert name="left">Left</ui:insert>  
</div>  
<div id="content" class="left_content">  
<ui:insert name="content">Content</ui:insert>  
</div>  
</div>  
<div id="bottom">  
<ui:insert name="bottom">Bottom</ui:insert>  
</div>  
</h:body>  
</html>

Four sections make up the template file mentioned above: the top portion, the left section, the content section, and the main section. This structure can also be used for the application's other pages.

index.xhtml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml"  
xmlns:h="http://xmlns.jcp.org/jsf/html"  
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">  
<h:head>  
<meta http-equiv="Content-Type"  
content="text/html; charset=UTF-8" />  
<h:outputStylesheet library="css" name="default.css"/>  
<h:outputStylesheet library="css" name="cssLayout.css"/>  
<title>Facelets Template Example</title>  
</h:head>  
<h:body>  
<ui:composition template="./template.xhtml">  
<ui:define name="header">  
<h:graphicImage value="/resources/images/header.png"/>  
</ui:define>  
  
<ui:define name="index">  
<h:graphicImage value="/resources/images/index.png"/>  
</ui:define>  
  
<ui:define name="content">  
<h:graphicImage value="/resources/images/content.png"/>  
</ui:define>  
<ui:define name="footer">  
<h:graphicImage value="/resources/images/footer.png"/>  
</ui:define>  
</ui:composition>  
</h:body>  
</html>

Output

index page

Frequently Asked Question

What is the JSF life cycle?

When the client sends an HTTP request for a page to the server, the JavaServer Faces application's lifecycle starts, and it ends when the server returns the page. There are two key stages to the JSF lifecycle: The phase of execution Rendering Stage.

What does JSF's managed bean mean?

A normal Java Bean class registered with JSF is the Managed Bean. In other terms, Controlled Beans is a JSF framework managed Java bean. Getter and setter functions, business logic, and even a backing bean are all included in managed beans (a bean contains all the HTML form values).

What is Facelet JSF?

Building component trees and JavaServer Faces views using HTML-style templates requires the usage of Facelets, a robust but lightweight page declaration language.

What does JSF's session scope mean?

You can create and bind objects to a session using the session scope. When this bean is used for the first time in an HTTP request, it is generated, and when the HTTP session is invalidated, it is deleted. Both JSF and CDI provide a request scope that performs similar duties.

What is the use of the Spring integration?

Lightweight messaging is made possible by Spring Integration within Spring-based applications, and declarative adapters are used to provide integration with external systems. JSF integration is offered by Spring Web Flow, making it easier to use JSF with Spring.

Conclusion

In this article, we have discussed JSF template tags.

We hope this article helps you to learn something new. And if you're interested in learning more, see our posts on JSP, 15 Best Java Frameworks To Use In 2021, Ruby, Ruby on Rails, Java knowledge for your first coding job.

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