What is JSF?
- Java Server Faces (JSF)
- It is an MVC web framework that simplifies the construction of user interfaces (UI).
- It is a component-based framework.
- It has three parts…
- UI (User Interface) Components.
- An Event-Driven Programming Model
- A Component Model that enable third party developer
- JSF reduces the effort in creating and maintaining applications.
- JSF facilitates Web application development by
- It is providing reusable UI components
- It can make easy data transfer between UI components
- It can manage UI state across multiple server requests
- It is enabling implementation of custom components
- It can wiring client-side event to server-side application code
- Example:
- Step 01: Create a Managed Bean
- Step 02: Create a JSF page (.xhtml)
- Step 03: Output
- An Analysis of the Sample Application
- A Simple application consists three things…
- Bean file
- A standard format java class file
- @ManagedBean annotation that specifies the name by which an object of this class is referenced in the JSF page.
- A java bean is a class that exposes properties and events to a framework such as JSF.
- A property is name which categories as read (getxxxx) or write (setxxxx), also called as getter and setter methods.
- Example: Step-01
- What is Managed Bean?
- A managed bean is a java bean that can be accessed from a JSF page.
- A managed bean must have a name and scope.
- Here, Session bean object is available for one user across multiple pages.
- Example: @ManagedBean(name = "user") @SessionScoped
- In JSF application, you use managed beans for all data that needs to be accessible from a page.
- XHTML page
- A JSF code to access the data from bean
- JSF application is deployed as a WAR file.
- You need a JSF page for each browser screen.
- There are different mechanisms for authoring a JSF page.
- Example:
- JSF 1.x was based on JSP,
- Facelet has become a part of JSF 2.0.
- When you author a Facelet page, you add JSF tags to an XHTML page.
- An XHTML page is simply an HTML page that is also proper XML.
- We use the extension .xhtml for Facelet pages.
- Configuration file
- Used to keep application server happy
- When you deploy a JSF application inside an application server, you need to supply a configuration file named web.xml.
Tags:
Java
