[Clarke]

I have Tomcat 5.0.30 configured and it works fine from the services menu in windows. It is configured to use the FULL SDK, not just the JRE of Java 1.4.2_08

But when I try and use it inside MyEclipseIDE (after setting up my project to deploy).. I get the following errors.

First small window popups up saying.
“Could not find main class, program will exit”.

After a couple of second another error pops up saying.
“A configuration error occured during startup. Please verify the preference field with the prompt: java.lang.NoSuchClassDefFoundError: ?

Exception in thread main

I”ve tried re-installing Tomcat fresh to no avail. This was deploying apps fine before I’m not sure what has changed on my system.

This happens in all of my applications.

Thanks.

Some Info:
MyEclipseIDE Ver: 3.8.3.
Eclipse Version: 3.0.1
Eclipse Build id: 200409161125
OS: Windows XP pro
Java: 1.4.2_08

[Riyad Kalla]

The problem is that Tomcat is installs to a directory with a space in the path name, you need to reinstall Tomcat to a path like C:\Java\Tomcat5, and it will work.

While this clearly seems like a bug in our connector it is infact an elusive Java issue that we have been unable to track down. On some Windows machines it works without problems, on others it breaks right away. We have been unable to track down exactly what the problem is. We thought it was related to locale, but that turned out to be a red herring. We will continue to investigate the issue, in the mean time the workaround is to install Tomcat to a shorter path that has no spaces in it.

[Clarke]

Hi

funny thing is I HAD a tomcat path with spaces and removed / reinstalled it to be in a directory with NO spaces.. and yet the problem persists.

Tomcat Home: C:\Tomkat5.0.30\

[Riyad Kalla]

Ok very strange, it sounds like you have all the settings correct. Please tell me ALL of the settings you have for the Tomcat 5 connector, and also copy-paste the entire startup log of Tomcat here for me to look at as well. Additionally any exceptions logged in <workspace dir>\.metadata\.log would be helpful.

[Clarke]

Tomcat Server: Enabled

Tomcat Home : C:\Tomcat5.0.30
Tomcat Base : C:\Tomcat5.0.30
Tomcat temp : C:\Tomcat5.0.30\temp

Tomcat – Add JVM settings…
JRE Type: Standard JVM
JRE Name: Java2
JRE Home: C:\j2sdk1.4.2_08 (This is a FULL Java SDK install NOT just the JRE)
Javadoc URL : http://java.sun.com/j2se/1.4.2/docs/api

Launch: Debug

Paths: All are left blank.

Default VM Arguments: none (left empty)

I cleared the <workspace>/.metadata/.log file out and re-started eclipse and tried to start Tomcat (simply because my log file was HUGE). I’ve saved the original .log and can paste it here but it’s 250k.

So here’s the ‘fresh’ one.

!SESSION May 06, 2005 13:43:33.940 ———————————————
eclipse.buildId=M200409161125
java.version=1.4.2_08
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US

!ENTRY com.genuitec.eclipse.easie.tomcat5 1 1 May 06, 2005 13:43:33.940
!MESSAGE Error starting Tomcat: java.lang.NoClassDefFoundError: ?
Exception in thread “main”

Hope this helps.

[Riyad Kalla]

Ok your setup looks perfect, what is the name of the Tomcat file you are using to install Tomcat, I’m going to try and reproduce this here.

[Clarke]

jakarta-tomcat-5.0.30.exe

As a reminder, I installed it into the DEFAULT directory that the installer provides FIRST and this happens to be in something like C:\Program Files\Apache Software Group\Tomcat 5.0.30

I removed it completely, rebooted (to ensure it was completely gone) and reinstalled into the above mentioned path.

Thanks.

[Riyad Kalla]

Here’s what I did:
1) Went to Jakarta’s site and downloaded jakarta-tomcat-5.0.30.exe (~10mb)
2) Ran the installer and installed it to: C:\Tomcat5.0.30 using the “Normal” install.
3) Used default port 8080 and admin/admin as login/pass
4) Configured it to use my 1.4.2 JDK at: C:\Java\jdk1.4.2_07 and hit install
5) Went into MyEclipse and changed my Tomcat home dir to: C:\Java\jdk1.4.2_07, selected my 1.4.2_07 JDK to run it and left everything else default.
6) Clicked on the MyEclipse launch app server button went down to Tomcat and clicked start, and go this correct startup log:

May 6, 2005 2:36:54 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
May 6, 2005 2:36:54 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1125 ms
May 6, 2005 2:36:54 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
May 6, 2005 2:36:54 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.0.30
May 6, 2005 2:36:54 PM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
May 6, 2005 2:36:54 PM org.apache.catalina.core.StandardHost getDeployer
INFO: Create Host deployer for direct deployment ( non-jmx )
May 6, 2005 2:36:54 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL file:C:\Tomcat5.0.30\conf\Catalina\localhost\admin.xml
May 6, 2005 2:36:58 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL file:C:\Tomcat5.0.30\conf\Catalina\localhost\balancer.xml
May 6, 2005 2:36:58 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL file:C:\Tomcat5.0.30\conf\Catalina\localhost\manager.xml
May 6, 2005 2:36:58 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /jsp-examples from URL file:C:\Tomcat5.0.30\webapps\jsp-examples
May 6, 2005 2:36:59 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path from URL file:C:\Tomcat5.0.30\webapps\ROOT
May 6, 2005 2:36:59 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /servlets-examples from URL file:C:\Tomcat5.0.30\webapps\servlets-examples
May 6, 2005 2:36:59 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /tomcat-docs from URL file:C:\Tomcat5.0.30\webapps\tomcat-docs
May 6, 2005 2:36:59 PM org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /webdav from URL file:C:\Tomcat5.0.30\webapps\webdav
May 6, 2005 2:36:59 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
May 6, 2005 2:37:00 PM org.apache.jk.common.ChannelSocket init
INFO: JK2: ajp13 listening on /0.0.0.0:8009
May 6, 2005 2:37:00 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/47 config=C:\Tomcat5.0.30\conf\jk2.properties
May 6, 2005 2:37:00 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 5765 ms

Do you see anything different from my actions than what you did? You don’t have the Sysdeo plugin installed as well and are accidentally using it instead of the MyEclipse toolbar button are you?

[Clarke]

Nothing at all.

These are the exact steps I take.

However (sorry to beat the dead horse) I did ORIGINALLY install Tomcat into a directory with spaces. Maybe this state was being saved somewhere and ever though there was a problem BEFORE and I”ve fixed it, it still assumes that the application is in a bad state.

No expert on the MyExclipse IDE but maybe some caching mechansim that isn’t recognising I’ve re-installed Tomcat.

The only thing I haven’t re-installed is Eclipse itself and I am about to do that today.

[Riyad Kalla]

The Tomcat install dir *shouldn’t* matter, but then again, you *shouldn’t* be having this problem, so maybe it does?

Before you reinstall try this first: File > Switch Workspace > C:\tempworkspace, hit OK to restart. Now re-setup Tomcat to the C:\tomcat5.0.30 dir and try and start it, did it work?

If so then try cleaning your existing workspace dir by using this tip: http://www.myeclipseide.com/FAQ+index-myfaq-yes-id_cat-30.html#343

[Clarke]

Okay there is DEFINATELY something in the Worksppace that saves settings for the webserver installagion, even when it’s updated / changed.

I reinstalled Eclipse AND MyEclipseIDE (MEI) and I forgot about the Eclipse settings being preserved in my workspace directory (c:/ecslipseWS) . Wjhen I tried to run my app, same problem occured.

So I uninstalled, deleted the workspace and reinstalled.

Works fine now.

I’m going to grep through the files in the WS directory and see if I can locate the offending entry.

[Clarke]

I think we submitted at the same time as I didn’t see your notice before I reinstalled.

[Clarke]

New problem (Related to this though)

Evertime I close the app (eclipse / MyEclipseIDE) and restart.. if I try and Start Tomcat it tells me configuration problem “Error on startup. Please verify the preference field with the prompt: Tomcat JDK name

[Riyad Kalla]

Did you try doing the -clean? I am starting to think there is something funked up with your workspace that needs to be cleaned out.

[Gokulakrishnan]

I have the same problem; I have reinstalled everything and I couldn’t start Tomcat;
I gave tomcat Home and Base dirs are the following
C:\Program Files\Apache Software Foundation\Tomcat 5.5

JRE env. is jre1.5.0_03

[Author]

Posts