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

Faces messages

The JSF provides two custom tags to display error messages. The <h:message> tag displays messages that are bound to specific components. The <h:messages> tag displays messages that are not bound to specific components.

We saw our first use of <h:message> in Chapter 3, Building JSF Forms. The tag is typically associated with a form control. We can add messages to our JSF pages with the following:

<h:messages globalOnly="false" styleClass="alert alert-danger" />

The tag is added to the top of the content. The attribute globalStyle is a Boolean value, and it specifies whether the tag should display messages that are not associated with a component. Here, we are using the Bootstrap CSS selectors again.

The following is a table of the attributes that are shared between the JSF tags, <h:messages> and <h:message>:




Specifies the unique identifier


Specifies the CSS class selectors for error messages