Practical JSF in Java EE 8: Web Applications ​in Java for the Enterprise

© Michael Müller 2018

Michael MüllerPractical JSF in Java EE 8 https://doi.org/10.1007/978-1-4842-3030-5_36

36. Handling Constants

Michael Müller¹ 

(1)

Brühl, Nordrhein-Westfalen, Germany

 

JSF 2.3 introduced the ability to import constants for use within the Expression Language (EL).

Navigation by Strings

JSF supports internal as well as external navigation. Internal navigation is defined in the source code, whereas external navigation is described by an external XML file.

Let’s take a look at a simple internal navigation first in Listing 36-1.

 1   <h:commandLink styleClass="button"

 2                          value="#{msg.btnWelcome}"

 3                          action="/user/welcome.xhtml"/>

Listing 36-1

Direct Navigation by String

In line 3 we define ...