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Editorial Team
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Asked: 2026-06-07T16:16:10+00:00

How you might be able to read from the post title my question will

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How you might be able to read from the post title my question will be pretty newbish. I try to understand how to get JSF working with Eclipse and I tried to get a nice and famous Hello world running.

As a template I used the code from the Oracle Java EE 6 Book.

I created this ManagedBean – Hello.java in package de.kuntze

package de.kuntze;

import javax.faces.bean.ManagedBean;

@ManagedBean
public class Hello {
    final String world = "Hello World!";

    public String getWorld(){
        return world;
    }

}

Can’t get any easier… I use this with the following site to pair with – beanhello.xhtml:

<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
    <title>Facelets Hello World</title>
</h:head>
<h:body>
    #{hello.world}
</h:body>
</html>

Also pretty easy… Here comes the code for 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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
  <display-name>CopyCat</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>/faces/*</url-pattern>
  </servlet-mapping>
</web-app>

I let this run on the Tomcat 7 server I integrated with Eclipse and the output looks fine for me so far – if I can serve any logging details let me know!

The project’s name is “CopyCat” and I expected it to see the managed Bean on my

http://localhost:8080/CopyCat/hello

but it gives me an 404 error same as the URL

http://localhost:8080/CopyCat/

and

http://localhost:8080/hello.

Am I just too stupid to see where my code goes or did I miss something? I know this question is very low level but I just don’t get it and don’t want to start coding with an existing project – which was already suggested to me :-/

Greetings and thanks in advance for any answers

André

UPDATE and somehow a solution

  1. Altogether the solution for the problem was using another URL:

    http://localhost:8080/CopyCat/faces/beanhello

  2. Using tomcat with eclipse gave me some errors (see below) and here are two things I can suggest so far (btw: The JSTL.jar was not necessary for that):

    a) Use the Eclipse workspace by coreservlets (http://www.coreservlets.com/JSF-Tutorial/jsf2/#Getting-Started) as a starting environment.

    b) Change the URL-pattern to *.jsf

    and reach the code with the URL

    http://localhost:8080/HelloWorld/beanhello.jsf

Hope this helps if you are in a similar situation.

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1 Answer

  1. Editorial Team

    try http://localhost:8080/CopyCat/faces/beanhello

    cause your page name is beanhello.xhtml

    and your servlet-mapping url-pattern is /faces/*

    regarding your exception

    read this answer by BalusC Exception java.lang.NoClassDefFoundError in Dynamic Web Application, Eclipse, JSF

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