<!-- Faces Servlet -->
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<!-- Faces Servlet Mapping -->
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
</servlet-mapping>

<h:command_button id="submitButton" label="Add" commandName="submit" >
  <f:action_listener type="jsfApp.MyActionListener" />
</h:command_button>

package jsfApp;

import java.util.Iterator;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;
import javax.faces.event.PhaseId;
import javax.faces.tree.Tree;

public class MyActionListener implements ActionListener {

    public PhaseId getPhaseId() {
        System.out.println("getPhaseId called");
        return PhaseId.APPLY_REQUEST_valueS;
    }
  
    public void processAction(ActionEvent event) {
        System.out.println("processAction called");

        // the component that triggered the action event
        UIComponent component = event.getComponent();
        System.out.println("The id of the component that fired the action event: "
            + component.getComponentId());

        // the action command
        String actionCommand = event.getActionCommand();
        System.out.println("Action command: " + actionCommand);
  
        FacesContext facesContext = FacesContext.getCurrentInstance();
        Tree tree                 = facesContext.getTree();
        UIComponent root          = tree.getRoot();

        System.out.println("----------- Component Tree -------------");
        navigateComponentTree(root, 0);
        System.out.println("----------------------------------------");
    }
  
    private void navigateComponentTree(UIComponent component, int level) {
        Iterator children = component.getChildren();

        // indent
        for (int i=0; i<level; i++)
            System.out.print("  ");

        // print component id
        System.out.println(component.getComponentId());

        // navigate children
        while (children.hasNext()) {
            UIComponent child = (UIComponent) children.next();
            navigateComponentTree(child, level + 1);
        }
    }
}