Book Image

Seam 2.x Web Development

Book Image

Seam 2.x Web Development

Overview of this book

The Seam framework from JBoss allows developers to use JSF, Facelets, EJB, and JPA to write conversational web applications. But you will first have to learn how these standard technologies are integrated using Seam and how they can be built upon using additional Seam components. If you need to build a Java web application fast, but don't have time to learn all these complex features, then this book is for you. The book provides a practical approach to developing Seam applications highlighting good development practices. It provides a complete walk through to develop Web applications using Seam, Facelets, and RichFaces and explains how to deploy them to the JBoss Application Server. You can start using key aspects of the Seam framework immediately because this book builds on them chapter by chapter, finally ending with details of enterprise functionality such as PDF report generation and event frameworks. First, the book introduces you to the fundamentals of Seam applications, describing topics such as Injection, Outjection and Bijection. You will understand the Facelets framework, AJAX, database persistence, and advanced Seam concepts through the many examples in the book. The book takes a practical approach throughout to describing the technologies and tools involved. You will add functionality to Seam applications after you learn how to use the Seam Generator RAD tools and how to customize and fully test application functionality. Hints and tips are provided along the way of how to use Seam and the JBoss Application Server.
Table of Contents (17 chapters)
Seam 2.x Web Development
Credits
About the author
About the reviewers
Preface

Building and testing the validating Seam calculator


In order to build and test the validating Seam calculator, we need to copy the additional JAR files (namely, hibernate-validator.jar, jboss-el.jar, jboss-seam-ui.jar, jsf-api.jar, and jsf-impl.jar) into the /lib directory of the sample project.

Note

A second sample project—Seam Validating Calculator—is available in the code bundle for this chapter.

To build and deploy the project onto the JBoss Application Server, we need to execute the deploy ant target.

To view the application in the browser, navigate to http://localhost:8080/SeamCalculator/calc.seam.

If any invalid data is entered into the web application, this is picked up by the Hibernate validators and displayed on the form, both next to the field containing the error and in a list at the bottom of the page, which shows all of the errors on the page.

In the previous screenshot, you can see that the Hibernate validator has done its job correctly and added an error message informing the user...