"The requested resource is not available" on running web application

[Kumar Raja]

Hello All,

I'm trying to run a small web application deployed in JBoss 4.0.4 version but receiving the following error message
"The requested resource (/EnterpriseWeb/Authenticate.do) is not available". I'm not able to figure out the issue. Could you please guide me here ?

My HTML

    
           
<form name="login" action=[b]"Authenticate.do"[/b] method="GET">
<table>
		    	<td><input type="submit" name="submit" value="Submit"/></td>
		        <td><input type="reset" name="reset" value="Cancel"/></td>
		    </tr>
		</table>
	</form>

web.xml

    

<?xml version="1.0" encoding="UTF-8"?>
<j2ee:web-app version="2.4" xmlns:j2ee="http://java.sun.com/xml/ns/j2ee" xmlns:xml="http://www.w3.org/XML/1998/namespace" 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 ">
	<j2ee:display-name>EnterpriseWeb</j2ee:display-name>
	<j2ee:servlet>
		<j2ee:servlet-name>Commander</j2ee:servlet-name>
		<j2ee:servlet-class>com.enterprise.web.Commander</j2ee:servlet-class>
	</j2ee:servlet>
	
	<j2ee:servlet-mapping>
		<j2ee:servlet-name>Commander</j2ee:servlet-name>
		<j2ee:url-pattern>/*.do</j2ee:url-pattern>
	</j2ee:servlet-mapping>
        <j2ee:servlet-mapping>
		<j2ee:servlet-name>Commander</j2ee:servlet-name>
		<j2ee:url-pattern>Authenticate.do</j2ee:url-pattern>
	</j2ee:servlet-mapping>
	<j2ee:welcome-file-list>
		<j2ee:welcome-file>index.jsp</j2ee:welcome-file>
	</j2ee:welcome-file-list>
</j2ee:web-app>

After starting JBoss, If i hit http://localhost:8080/EnterpriseWeb/Authenticate.do, I receive the message
The requested resource (/EnterpriseWeb/Authenticate.do) is not available.

I see this message even when I click on submit button on the html page.

The issue seems to be very trivial but could not figure out the exact reason. Can any body point the mistake, I'm doing here ?

[Devaka Cooray]

Kumar Raja wrote:<j2ee:url-pattern>Authenticate.do</j2ee:url-pattern>

Change it as:
<j2ee:url-pattern>/Authenticate.do</j2ee:url-pattern>

[Kumar Raja]

Hi Devaka,

It did not fix the problem. Also, since we have another mapping /*.do, should not this map to any "do" urls.

Thanks
Kumar

[Devaka Cooray]

Without seeing your Servlet code, I feel everything is correct in your XML.

Just one suggestion...

Kumar Raja wrote:xmlns:j2ee="http://java.sun.com/xml/ns/j2ee"

Change it as:
xmlns:j2ee="http://java.sun.com/xml/ns/javaee"

[Kumar Raja]

Hmm, I changed the XMLNS as suggested, but it did not work out.

Below is the code of the servlet

    

package com.enterprise.web;

import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.log4j.*;
import java.io.*;

public class Commander extends HttpServlet{
	private static Logger logger=Logger.getLogger(Commander.class);
	
	/*public Commander(){
		super();
		BasicConfigurator.configure();
	}*/
	
	public void init(){
		logger.debug(this.getClass().getName()+" in init() method");
		System.out.println("I'm in init Method");
	}
	
	public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException{
		execute(req,res);
	}
	
	public void doPost(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException{
		execute(req,res);
	}
	
	public void execute(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException{
		logger.debug(this.getClass().getName()+"_"+Thread.currentThread().getName()+" execute() method");
               //
	}
	
	public void destroy(){
		logger.debug(this.getClass().getName()+" in destroy() method");
	}
	
}

Is there any way I can actually find the reason why it is failing, like in some logs or run time errors. Does Tomcat 5.5.17 that is shipped with JBoss give me some run time error, I mean real error stack.

[Kumar Raja]

Ok, I got this fixed. But not sure what was the reason earlier.

I changed my web.xml based on "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<servlet>
<servlet-name>Commander</servlet-name>
<servlet-class>com.enterprise.web.Commander</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>Commander</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

My earlier web.xml is based on web-app 2.4 schema. Is JBoss 4.0.4 not supportive for Servet 2.4 ? Is this the conclusion? Or was that something I did terribly wrong ?

[Seetharaman Venkatasamy]

Kumar Raja wrote:

<?xml version="1.0" encoding="UTF-8"?>
<j2ee:web-app version="2.4" xmlns:j2ee="http://java.sun.com/xml/ns/j2ee" xmlns:xml="http://www.w3.org/XML/1998/namespace" 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 ">
	<j2ee:display-name>EnterpriseWeb</j2ee:display-name>
	<j2ee:servlet>
		<j2ee:servlet-name>Commander</j2ee:servlet-name>
		<j2ee:servlet-class>com.enterprise.web.Commander</j2ee:servlet-class>
	</j2ee:servlet>
	
	<j2ee:servlet-mapping>
		<j2ee:servlet-name>Commander</j2ee:servlet-name>
		<j2ee:url-pattern>/*.do</j2ee:url-pattern>
	</j2ee:servlet-mapping>
        <j2ee:servlet-mapping>
		<j2ee:servlet-name>Commander</j2ee:servlet-name>
		<j2ee:url-pattern>Authenticate.do</j2ee:url-pattern>
	</j2ee:servlet-mapping>
	<j2ee:welcome-file-list>
		<j2ee:welcome-file>index.jsp</j2ee:welcome-file>
	</j2ee:welcome-file-list>
</j2ee:web-app>

where do you find this? I surprised j2ee:web-app

[Devaka Cooray]

Seetharaman Venkatasamy wrote:where do you find this? I surprised j2ee:web-app

That's the XML namespace he used. The namespace for 'j2ee' is defined in the root element.

[Seetharaman Venkatasamy]

remove your namespace j2ee . It will work . dont know the exact reason