HFSJ page 171-177 problem

[Nawar Gailani]

Hi there,
I have an error in Tomcat while trying out this tutorial:

HTTP Status 404 - /listenerTest/ListenTest.do
 
type Status report
 
message /listenerTest/ListenTest.do
 
description The requested resource (/listenerTest/ListenTest.do) is not available.
Apache Tomcat/5.5.17    

I rechecked everything, and all seem fine! So I started NetBeans (the holy gift) and copy'n'paste all the java sources. Everything just worked fine! I overwrote the classes in my Tomcat directory with the ones compiled from NetBeans, but still the error there! Can anyone help?
Here are the source files (although I don't think this is the problem!):

 package com.example;
 
public class Dog {
private String breed;

public Dog(String breed) {
this.breed = breed;
}

public String getBreed() {
return breed;
}
}   

  package com.example;
 
import javax.servlet.*;
 
public class MyServletContextListener implements ServletContextListener {

public void contextInitialized(ServletContextEvent event) {
ServletContext sc = event.getServletContext();
String dogBreed = sc.getInitParameter("breed");
Dog d = new Dog(dogBreed);
sc.setAttribute("dog", d);
}

public void contextDestroyed(ServletContextEvent event) {
//nothing to do here
}
}  

  package com.example;
 
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
 
public class ListenerTester extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response) 
throws IOException, ServletException {

response.setContentType("text/html");
PrintWriter out = response.getWriter();

out.println("test context attributes set by listener<br>");
out.println("<br>");

Dog dog = (Dog) getServletContext().getAttribute("dog");

out.println("Dog's breed is: " + dog.getBreed());
}
}  

  <web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">
 
    <servlet>
        <servlet-name>ListenerTester</servlet-name>
        <servlet-class>com.example.ListenerTester</servlet-class>
    </servlet>
 
    <servlet-mapping>
        <servlet-name>ListenerTester</servlet-name>
        <url-pattern>/ListenTest.do</url-pattern>
    </servlet-mapping>
    
    <context-param>
    <param-name>breed</param-name>
    <param-value>Great Dane</param-value>
    </context-param>
    
    <listener>
    <listener-class>
    com.example.MyServletContextListener
    </listener-class>
    </listener>
 
</web-app>  

is there something wrong with my code?
Can I use NetBeans for this exam and skip all that headeache?!
Thanks in advance
[ October 25, 2006: Message edited by: Nawar Gailani ]

[Christophe Verré]

Can you post your application's directory stucture, and the url you are trying to access. It seems you are trying to access something like http://localhost:8080/listenerTest/ListenTest.do. Is your application called listenerTest ?
Please confirm.

[Nawar Gailani]

Hi Satou,
The web.xml in:

 C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\listenerTest\WEB_INF\

And the three classes in:

  C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\listenerTest\WEB_INF\classes\com\example  

The URL is:
http://localhost:8080/listenerTest/ListenTest.do

Hmmm! I think I found the 'silly' mistake! it is WEB-INF Nawar!!
Ok it is working now and I learned something: "Always prepare a strong coffee before you start coding!"

Thanks for your post Satou, and for this cup of coffee I'm drinking now!

[Christophe Verré]

Glad you've found the problem

[Patrick Gamble]

Hi

I am having the same error msg - can you expand on what you found wrong in your web.xml file

Thanks

Patrick

[Patrick Gamble]

Sorry - disregard the last msg - realised what your problem was - not the file but the incorrect folder name. This wasn't my problem so I'm going to have to further re-examine it all

Thanks

Patrick