h:commandButton and actionListener

Wed, 14 Jun 2006 12:44:54 -0700 

Hi all,
I've resolved the problem of some time ago (different versions of myfaces 
deployed on tomcat :( ) but now i've a new problem about h:commandButton and 
actionListener associated on it.

When i click on the button the actionListener is (correctly) fired but the same 
behaviour (after the first time i click the button) is fired when i click on 
the "refresh" button of my web browser. Is there a way to fire the 
actionListener only on when i click on the h:commandButton ?

I'm using the latest myfaces implementation of JSF on Tomcat 5.5.17. The same 
problem arise on FireFox 1.5 and Internet Explorer 6.

Thanks for all the help

This is my (very) simple jsp page:
**************************
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsf/html"; prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

        <title>My JSF 'index.jsp' starting page</title>
</head>

<body>
        <f:view>
                <h:form>
                hello world
                <br>
                <h:commandButton value="click me" action="none" >
                        <f:actionListener type="it.hostingjava.MyListener" />
                </h:commandButton>

                </h:form>
                <br>
        </f:view>
</body>
</html>
**********************************

And here is the ultra-simple Listener:
*********************************
package it.hostingjava;

import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;

public class MyListener implements ActionListener {

        public void processAction(ActionEvent arg0) throws 
AbortProcessingException {
                System.out.println("MyListener.processAction");
        }

}

***************************************

Here is the rendered HTML:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

        <title>My JSF 'index.jsp' starting page</title>
</head>

<body>

                <form id="_idJsp0" name="_idJsp0" method="post" 
action="/myjsf/index.faces" enctype="application/x-www-form-urlencoded">
                hello world
                <br>


                <input id="_idJsp0:_idJsp1" name="_idJsp0:_idJsp1" 
type="submit" value="click me" onclick="clear__5FidJsp0();" />

                <input type="hidden" name="_idJsp0_SUBMIT" value="1" /><input 
type="hidden" name="jsf_sequence" value="11" /><input type="hidden" 
name="_idJsp0:_link_hidden_" /><script type="text/javascript"><!--
function clear__5FidJsp0() {
  var f = document.forms['_idJsp0'];
  f.elements['_idJsp0:_link_hidden_'].value='';
  f.target='';
}
clear__5FidJsp0();
//--></script></form>
                <br>

<!-- MYFACES JAVASCRIPT -->

</body>
</html>

******************************************************

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