The JSF specification predates CDI. As such, many JSF artifacts, such as FacesContext and ExternalContext, had to be obtained via static entry methods; this resulted in hard-to-read boilerplate code. JSF 2.3 introduces the ability to inject JSF artifacts via CDI's @Inject annotation, as seen in the following example:
package net.ensode.javaee8book.jsfarbitrarymess;
import java.io.Serializable;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.view.ViewScoped;
import javax.inject.Inject;
import javax.inject.Named;
@Named
@ViewScoped
public class ArbitraryMessageController implements Serializable {
@Inject
FacesContext facesContext;
public void saveData() {
FacesMessage facesMessage = new
FacesMessage(FacesMessage.SEVERITY_INFO,
"Data saved successfully", "All Data successfully
saved.");
facesContext.addMessage(null, facesMessage);...