not executing simple bean method

Question

im trying to do a simple bean method, but it does not work, dont show the syso in the console of eclispe, and when i click the button, it change my url to http://localhost:8080/Projeto01/index.jsf?jftfdi=&jffi=%2Findex.xhtml

why dont work and why it change the url for this strange url ?

my msg.java(bean)

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;

    @ManagedBean
    @SessionScoped
    public class Msg {

        public void show() {
            System.out.println("Working Bean Method");
        }
    }

my index.xhtml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:p="http://primefaces.org/ui"
      xmlns:ui="http://java.sun.com/jsf/facelets">
        <ui:composition>

<h:head></h:head>

    <h:body>
    <h:form>

    <h:button value="Show" action="#{msg.show()}"></h:button>

    </h:form>
    </h:body>
    </ui:composition>
</html>

and my web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <display-name>do0</display-name>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

    <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>
</web-app>

score 1 · Accepted Answer · edited May 23 '17 at 11:49

The <h:button> is a simple page-to-page navigation button. As you can see in the tag documentation, it doesn't support the action attribute at all. You're most likely confusing the <h:button> with <h:commandButton> which in turn supports that attribute.

In order to achieve your functional requirement of invoking a JSF backing bean method on press of a button, just replace <h:button> by <h:commandButton>:

<h:commandButton value="Show" action="#{msg.show()}" />

not executing simple bean method

1 Answers1

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