Book Image

Digital Java EE 7 Web Application Development

By : Peter Pilgrim
Book Image

Digital Java EE 7 Web Application Development

By: Peter Pilgrim

Overview of this book

Digital Java EE 7 presents you with an opportunity to master writing great enterprise web software using the Java EE 7 platform with the modern approach to digital service standards. You will first learn about the lifecycle and phases of JavaServer Faces, become completely proficient with different validation models and schemes, and then find out exactly how to apply AJAX validations and requests. Next, you will touch base with JSF in order to understand how relevant CDI scopes work. Later, you’ll discover how to add finesse and pizzazz to your digital work in order to improve the design of your e-commerce application. Finally, you will deep dive into AngularJS development in order to keep pace with other popular choices, such as Backbone and Ember JS. By the end of this thorough guide, you’ll have polished your skills on the Digital Java EE 7 platform and be able to creat exiting web application.
Table of Contents (21 chapters)
Digital Java EE 7 Web Application Development
About the Author
About the Reviewers

The request processing lifecycle

JSF has a request-response processing lifecycle that is built around the HTTP protocol. JSF is built on top of the Java Servlet specification that takes care of translating the request user agent, which in the majority of the cases, is a web browser to a known endpoint. For JSF, the first port of call is javax.faces.webapp.FacesServlet. This servlet will simply dispatch the incoming request to the controller, and this component can elect to generate a response or delegate the output to the internal JSF controller implementation.

There are three circumstances for JSF in the request processing lifecycle. The first is the invocation to the JSF controller with a Faces request, which ultimately generates a Faces response.

The second is a request to retrieve a resource such as a CSS or JavaScript file or image or some other media file. However, a Faces resource request, which does not require the execution of logic, causes the JSF framework to furnish the output...