404 on GET request to Servlet

Question

I have been trying for 3 days now to create a Java EE project, that uses JSP, Servlet and EJB in a single project, as I need to do a course final assignment on this.

We were instructed to use JBOSS 4.2.3, and so that is what I try to use.

I set up my environment as follows:

1. http://community.linuxmint.com/tutorial/view/1372
2. Install IntelliJ Idea 13 Ultimate.
3. Download JBOSS and prepare a directory to use.
4. After those 3 days of hard work, I managed to get a sample app, created by this tutorial: http://wiki.jetbrains.net/intellij/Developing_and_running_a_Java_EE_Hello_World_application#The_Hello_World_Java_EE_application

Now, the application compiles, I get the index.jsp on: http://localhost:8080/webWeb/

However, I get a 404 error if I click it, and submit to http://localhost:8080/webWeb/helloworld

I dont know what else to try, I think I Googled and read pretty much everything :( Here is a link to the Project archive, so that you could (potentially) test out my project, see if you can solve this problem somehow...

https://www.dropbox.com/sh/9sma5vh7usy2h3p/AADA64KPyLH29iGz8OamWyNna

Thanks!

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UPDATE: For convenience, my HelloWorldServlet.java code:

package myservlets;

import mybeans.HelloWorldBean;

import javax.ejb.EJB;
import java.io.IOException;

@javax.servlet.annotation.WebServlet(name = "HelloWorldServlet", urlPatterns = "/helloworld")
public class HelloWorldServlet extends javax.servlet.http.HttpServlet {
    @EJB
    private HelloWorldBean helloWorldBean;
    protected void doPost(javax.servlet.http.HttpServletRequest request,
                          javax.servlet.http.HttpServletResponse response)
            throws javax.servlet.ServletException, IOException {

    }
    @Override
    protected void doGet(javax.servlet.http.HttpServletRequest request,
                         javax.servlet.http.HttpServletResponse response)
            throws javax.servlet.ServletException, IOException {
        String hello=helloWorldBean.sayHello();
        request.setAttribute("hello",hello);
        request.getRequestDispatcher("hello.jsp").forward(request,response);
    }
}

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I feel I really must add, that this extreme difficulty of setting up Java to just work and allow me to focus on CODING , is the reason I prefer something like PHP, which just works for example... Am I wrong?

Answer 1

The problem is that you're using JBoss 4.2.3 which works with Servlet 2.5 / JSP 2.1 (as noted by BalusC here: Servlet Spec for Jboss 4.2.3 ). Usage of @WebServlet and annotations is supported since Servlet 3.0. So, you have to configure your servlets directly in web.xml file.

Note that servet 2.5 doesn't support EJB injection either.