Tomcat server

DavidT · January 17th, 2005, 06:01 PM

HTTP Status 404 - /myApp/servlet/TestingServlet

My 404 Status error was caused by insuffienct information in web.xml.
It requires two nodes, servlet and servlet-mapping, to work properly.

My folder structure looks like this:

/Tomcat 5.0/
--/webapps/
----/myApp/
------/WEB-INF/
--------web.xml
--------/classes/
----------TestingServlet.class

This is the web.xml that gave me success:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

    <servlet>
        <servlet-name>TestingServlet</servlet-name>
        <servlet-class>TestingServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>TestingServlet</servlet-name>
        <url-pattern>/servlet/TestingServlet</url-pattern>
    </servlet-mapping>
</web-app>

angrycat · January 18th, 2005, 10:52 AM

I dont understand why you have done this. I havent done this for a while, but as I remember you map a folder, all servlets placed in that folder should work, but you do not have a folder by the name TestServlet, if you rename the servlet so that it doesn not contain TestServlet in its name, does the mapping still work??

urstruly90 · July 10th, 2005, 08:44 AM

Hi mbs31,

I had the same problem that u had(running the servlets using tomcat 5.59).
i could run the example servlets but i couldn't run my own servlets.
so i just uncommented the servlet and servlet mapping definitions in the /conf/web.xml files, but again it didnt work out

but amazingly when i restarted the server. it seemed to work.. dont ask me why.

so just try restarting the server after uncommenting those things in /conf/web.xml files. u might just consider restarting the browser as well.

well it worked for me.. may just work for u...

all the best.

angrycat · July 11th, 2005, 09:10 AM

Web and Server XML are read by tomcat on startup, so any changes made require a re-start. If you are using classes within your web application, the addition of new methods also requires a restart to detect the changes.

tomcat31 · July 1st, 2006, 12:19 AM

Now, I have another problem with my first servlet in tomcat.
It works fine when i have no "package declaration" in my code.

But when i write this at the top of my code, it doesn't work anymore:

Code:

package sk.tomcatuser31.svlt;

The class that contains the servlet code is called "Rot31"

Code:

public class Rot13 extends HttpServlet { ....

I've added this in the web.xml, but appearently it seems not to work anymore.

Code:

<servlet>
<servlet-name>Rot13</servlet-name>
<servlet-class>sk.tomcatuser31.svlt.Rot13</servlet-class>
</servlet>

and

<servlet-mapping>
<servlet-name>Rot13</servlet-name>
<url-pattern>/servlet/Rot13</url-pattern>
</servlet-mapping>

when i leave out the package-things, it works :-(
what's wrong and where ?

tomcat31 · July 5th, 2006, 02:55 PM

ok got it.
i have to put the class file in a subdirectory structure of WEB-INF, like declared in the package.