Tomcat manager problems

[Jenn Person]

Hi,

I'm using Tomcat 5.0.28 and I started a webapp that was working without problems. I added a few servlets and JSP pages. Then after restarting Tomcat to allow for a new servlet to work, I got this error:

HTTP Status 404 - /myapp/
 
type Status report
 
message /myapp/
 
description The requested resource (/myapp/) is not available.

I went into Tomcat Manager and found my application was stopped. I clicked on Start, but keep getting this message:

FAIL - Application at context path /myapp could not be started

What happened? I can start, stop and restart all the examples that came with Tomcat, but not my own. I'm at a loss for what I can do to make things work again.

Any advice would be great!
Jenn

[Ben Souther]

The manager isn't the problem.

Check the Tomcat logs to see what is going wrong with your app at startup.

[William Brogden]

If I was going to bet, I would say the most likely cause is your web.xml is no longer valid and readable. Messages during startup should say something.

Bill

[Jenn Person]

Using Tomcat 5, there are no messages to be seen at any point... so I guess that means I'll look into the logs and see what they tell me.

I'll post them later this evening if I can't make sense of them, along with my web.xml file.

Thanks guys!
Jenn

[Jenn Person]

Ok I've checked the log and I can't see what the problem is.

Here is my current web.xml file

<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">
 
<!-- Servlets --> 
 
  <servlet>
    <servlet-name>Home Controller</servlet-name>
    <servlet-name>myapp.controllers.HomeController</servlet-class>
  </servlet>
 
<!-- Servlet Mappings --> 
  
  <servlet-mapping>
    <servlet-name>Home Controller</servlet-name>
    <url-pattern>/Home.do</url-pattern>
  </servlet-mapping>
 
<!-- Welcome File List -->  
  
  <welcome-file-list id="welcomeList">
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
 
</web-app>

Here is the simple test servlet I wanted to run, which compiles:

package myapp.controllers;
 
import java.io.*;
import javax.servlet.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
public class HomeController extends HttpServlet
{
  public void doGet (HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
  {
    PrintWriter out = res.getWriter();
 
    out.println("<p>Home Controller</p>");
 
    out.close();
  }
}

If posting a log will help, please let me know.

Jenn

[Ben Souther]

Originally posted by Jenn Person:
...
If posting a log will help, please let me know.

Yes, do that.

Stop Tomcat,
Delete all the logs in the tomcat/logs directory,
Start tomcat,
If your app doesn't come up, post any logs that aren't empty.

This way, you're not posting tons of irrelevant stuff.

[Ben Souther]

Here it is:

 
 <servlet-name>Home Controller</servlet-name>
    <[B]servlet-name[/B]>myapp.controllers.HomeController</servlet-class>
 

   

[Jenn Person]

Oh wow, you're right Ben. I checked the log and it reported an xml error. I kept looking over the web.xml and couldn't see it.

Nice catch, thank you so much! It works now.

Jenn

[William Brogden]

I never regretted buying a copy of XML Spy years ago - a quick load of web.xml or server.xml after editing gives me confidence that I have not created a hard to find tyop.

Im sure that these days XML validation is built into lots of IDEs...
Bill