Tomcat Startup Problem

[Mark Sweeney]

Sorry if this has already been asked recently but i'm new to Tomcat and am a bit stuck. Tomcat was working fine for a while and then all of a sudden I start it one day and this appears:

Using CATALINA_BASE: ..
Using CATALINA_HOME: ..
Using CATALINA_TMPDIR: ..\temp
Using JAVA_HOME: C:\Java\jdk141_05
01-Dec-2004 17:15:02 org.apache.commons.digester.Digester startElement
SEVERE: Begin event threw exception
java.lang.ClassNotFoundException: org.apache.catalina.loader.DevLoader
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClas
sLoader.java:945)
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClas
sLoader.java:810)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at org.apache.catalina.startup.CreateLoaderRule.begin(ContextRuleSet.jav
a:273)
at org.apache.commons.digester.Rule.begin(Rule.java:200)
at org.apache.commons.digester.Digester.startElement(Digester.java:1273)

at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Sour
ce)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unkn
own Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElemen
t(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContent
Dispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Un
known Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1548)
at org.apache.catalina.startup.Catalina.start(Catalina.java:420)
at org.apache.catalina.startup.Catalina.execute(Catalina.java:350)
at org.apache.catalina.startup.Catalina.process(Catalina.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:156)
Catalina.start using ..\conf\server.xml: java.lang.ClassNotFoundException: org.a
pache.catalina.loader.DevLoader
java.lang.ClassNotFoundException: org.apache.catalina.loader.DevLoader
at org.apache.commons.digester.Digester.createSAXException(Digester.java
:2540)
at org.apache.commons.digester.Digester.createSAXException(Digester.java
:2566)
at org.apache.commons.digester.Digester.startElement(Digester.java:1276)

at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Sour
ce)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unkn
own Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElemen
t(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContent
Dispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Un
known Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1548)
at org.apache.catalina.startup.Catalina.start(Catalina.java:420)
at org.apache.catalina.startup.Catalina.execute(Catalina.java:350)
at org.apache.catalina.startup.Catalina.process(Catalina.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:156)

[Karthik Guru]

I dont use tomcat at work. But this line in the exception probably indicates that Common's Digester is having issues parsing an XML file. It could be server.xml. You should may be verify that the server.xml is as per the dtd / that its a valid XML etc.



01-Dec-2004 17:15:02 org.apache.commons.digester.Digester startElement

[Mark Sweeney]

Thanks, I got it fixed, just reinstalled tomcat and it was fine so your probably right about the server.xml file once it had the original it started upno problem, cheers

[leela addagulla]

I had to put the DevLoader.jar, which you can find inside the Eclipse/dropins/sysdeo-plugin folder in the TOMCAT_HOME lib folder