HTTP Status 404

General
1

Hi, I’m new un Vaadin. I have a silly error when I compile my Project:

When I want to se the web application always appear the same error:

HTTP Status 404 - /Example/WEB-INF/classes/com/example/example/ExampleApplication.java

--------------------------------------------------------------------------------

type Status report

message /Example/WEB-INF/classes/com/example/example/ExampleApplication.java

description The requested resource (/Example/WEB-INF/classes/com/example/example/ExampleApplication.java) is not available.

I don’t know why. It even occurs when I don’t modify a single line from the “Hello World” example.

I’m using JBoss Server v4.2 and the web.xml file is

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" 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 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<display-name>Example</display-name>
	<context-param>
		<description>
		Vaadin production mode</description>
		<param-name>productionMode</param-name>
		<param-value>false</param-value>
	</context-param>
	<servlet>
		<servlet-name>Example Application</servlet-name>
		<servlet-class>com.vaadin.terminal.gwt.server.ApplicationServlet</servlet-class>
		<init-param>
			<description>
			Vaadin application class to start</description>
			<param-name>application</param-name>
			<param-value>com.example.example.ExampleApplication</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>Example Application</servlet-name>
		<url-pattern>/*</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
</web-app>

It could be the Server I have chose? If I change the direction of the browser that innitialy appears

http://localhost:8080/Example/WEB-INF/classes/com/example/example/ExampleApplication.java

for this one (the same direction without /WEB-INF/)

http://localhost:8080/Example/classes/com/example/example/ExampleApplication.java

I can see properly the page

Thank you all for any suggestion

2

Simply use “http://localhost:8080/Example/” to open the application in the web browser.

3

Thank you for yor reply, Marko.

I was talking about the web browser of Eclipse, not Firefox or Chrome.

Any idea of what could be?

4

It doesn’t matter what web browser you use.

You don’t run Vaadin applications by giving a Java source file name, but the application name (context root to be exact - it’s defined in the project settings). In your case, it’s apparently “Example”.

The WEB-INF is a special directory that can not browsed - it is protected.

The URL without the WEB-INF path works just because everything after the “/Example/” is ignored.

5

Thank you a lot, Marko

as you can see, I’m very new in this stuff

Thank you again!!!

6

you can clean the project .