Introducción a java server faces

Introduction to Java Server Faces(JSF)
Deepak Goyal Vikas Varma Sun Microsystems

Objective

Understand the basic concepts of Java Server™ Faces[JSF] Technology.

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Agenda
   What is and why JSF? Architecture Overview UI Component Model Development Steps

JavaServer™ Faces (JSF) Framework Is…

A server side user interface component framework for Java™ technology-basedweb applications

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What is JSF?
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A specification and reference implementation for a web application development framework
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Components Events Validators & converters NavigationBack-end-data integration

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Why JSF? (page 1)
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MVC for web applications Clean separation of roles Easy to use Extendable Component and Rendering architecture Support forclient device independence Standard Huge vendor and industry support
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Why JSF? (page 2)
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JSP and Servlet
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No built-in UI component model No built-in UI component model No built-in eventmodel for UI components No built-in state management for UI components No built-in support of multiple renderers Not a standard (despite its popularity)

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Struts (I am not saying you should notuse Struts)
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Struts and JSF can be used together
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How the JSF Specification Fits In
JSF App JSF App JSF Tags JSP (1.2) JSF API

Servlets (2.3)

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Agenda
   

Whatis and why JSF? Architecture Overview UI Component Model Development Steps

JSF Architecture [MVC]
Server
JSF Page

Desktop Browser

HTML HTML RenderKit

Front ctrl

JSF Page WMLRenderKit

App Backend

Phone
WML

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Request processing Lifecycle
FacesServlet
2.Passes controls to Lifecycle 1.Creates FacesContext

Lifecycle

FacesContext
3. Process FacesContext invarious phase

Request Processing Lifecycle Phases
Faces Request
Reconstitute Component Tree Apply Request Values Process Validations

Faces Response

Render Response

Invoke Application...