CODEWITHSUNDEEP
jsfbutton
user3284660
user3284660

Reputation: 59

<h:button> not executing simple bean method

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>

Upvotes: 0

Views: 664

Answers (1)

BalusC
BalusC

Reputation: 1108642

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()}" />

See also:

As to those jftfdi and jffi query string parameters in the target URL, this is a bug in Mojarra's implementation of the new JSF 2.2 flow scope. This is fixed in Mojarra 2.2.5. Note that this is further unrelated to your concrete problem as you shouldn't be using a <h:button> in first place.

See also:

Upvotes: 1

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