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PLEASE HELP!!!! [message #15901] Tue, 25 January 2005 10:46
Eclipse UserFriend
Originally posted by: jdonovan.cfl.rr.com

I am having difficulty getting Tomcat to work from within Eclipse. I am

using Eclipse 2.1.2 ( Build 200311030802), SKD 1.4.2 06, Tomcat 4.1.31,
and Sydeo Tomcat Plugin Version 21. Whenever I start Tomcat from within

Eclipse I get a NullPointerException on Code that comes with the
packages. Here is the stack trace:

Jan 24, 2005 8:34:41 AM org.apache.commons.digester.Digester
startElement
SEVERE: Begin event threw exception
java.lang.NullPointerException
at
org.apache.commons.digester.ObjectCreateRule.begin(ObjectCre ateRule.java:252)

at org.apache.commons.digester.Rule.begin(Rule.java:200)
at
org.apache.commons.digester.Digester.startElement(Digester.j ava:1273)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unk nown
Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unkn own
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanSt artElement(Unknown

Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatc her.scanRootElementHook(Unknown

Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$Fragme ntContentDispatcher.dispatch(Unknown

Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDo cument(Unknown

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:154 8)
at org.apache.catalina.startup.Catalina.start(Catalina.java:420 )
at org.apache.catalina.startup.Catalina.execute(Catalina.java:3 50)
at org.apache.catalina.startup.Catalina.process(Catalina.java:1 29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)

at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:15 6)
Catalina.start using C:\Tomcat_4.1\conf\server.xml:
java.lang.NullPointerException
java.lang.NullPointerException
at
org.apache.commons.digester.Digester.createSAXException(Dige ster.java:2540)

at
org.apache.commons.digester.Digester.createSAXException(Dige ster.java:2566)

at
org.apache.commons.digester.Digester.startElement(Digester.j ava:1276)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unk nown
Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unkn own
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanSt artElement(Unknown

Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatc her.scanRootElementHook(Unknown

Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$Fragme ntContentDispatcher.dispatch(Unknown

Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDo cument(Unknown

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:154 8)
at org.apache.catalina.startup.Catalina.start(Catalina.java:420 )
at org.apache.catalina.startup.Catalina.execute(Catalina.java:3 50)
at org.apache.catalina.startup.Catalina.process(Catalina.java:1 29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)

at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:15 6)

Please help!!!!

TIA

Jim
Re: PLEASE HELP!!!! [message #16047 is a reply to message #15901] Tue, 25 January 2005 10:27 Go to previous message
Eclipse UserFriend
Originally posted by: Chris_Laffra.ca.ibm.com

Set a breakpoint at ObjectCreateRule.java:252
Then launch again under debug control (press F11).
See why you get the NullPointerException.
Proceed from there...

--
Chris Laffra, http://eclipsefaq.org


"Jim Donovan" <jdonovan@cfl.rr.com> wrote in message
news:41F669ED.EBB519D3@cfl.rr.com...
> I am having difficulty getting Tomcat to work from within Eclipse. I am
>
> using Eclipse 2.1.2 ( Build 200311030802), SKD 1.4.2 06, Tomcat 4.1.31,
> and Sydeo Tomcat Plugin Version 21. Whenever I start Tomcat from within
>
> Eclipse I get a NullPointerException on Code that comes with the
> packages. Here is the stack trace:
>
> Jan 24, 2005 8:34:41 AM org.apache.commons.digester.Digester
> startElement
> SEVERE: Begin event threw exception
> java.lang.NullPointerException
> at
>
org.apache.commons.digester.ObjectCreateRule.begin(ObjectCre ateRule.java:252
)
>
> at org.apache.commons.digester.Rule.begin(Rule.java:200)
> at
> org.apache.commons.digester.Digester.startElement(Digester.j ava:1273)
> at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unk nown
> Source)
> at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unkn own
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanSt artElement(Unkno
wn
>
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatc her.scanRootElem
entHook(Unknown
>
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$Fragme ntContentDispatc
her.dispatch(Unknown
>
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDo cument(Unknown
>
> 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:154 8)
> at org.apache.catalina.startup.Catalina.start(Catalina.java:420 )
> at org.apache.catalina.startup.Catalina.execute(Catalina.java:3 50)
> at org.apache.catalina.startup.Catalina.process(Catalina.java:1 29)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39
)
>
> at
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl
..java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:324)
> at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:15 6)
> Catalina.start using C:\Tomcat_4.1\conf\server.xml:
> java.lang.NullPointerException
> java.lang.NullPointerException
> at
>
org.apache.commons.digester.Digester.createSAXException(Dige ster.java:2540)
>
> at
>
org.apache.commons.digester.Digester.createSAXException(Dige ster.java:2566)
>
> at
> org.apache.commons.digester.Digester.startElement(Digester.j ava:1276)
> at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unk nown
> Source)
> at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unkn own
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanSt artElement(Unkno
wn
>
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatc her.scanRootElem
entHook(Unknown
>
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$Fragme ntContentDispatc
her.dispatch(Unknown
>
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDo cument(Unknown
>
> 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:154 8)
> at org.apache.catalina.startup.Catalina.start(Catalina.java:420 )
> at org.apache.catalina.startup.Catalina.execute(Catalina.java:3 50)
> at org.apache.catalina.startup.Catalina.process(Catalina.java:1 29)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39
)
>
> at
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl
..java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:324)
> at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:15 6)
>
> Please help!!!!
>
> TIA
>
> Jim
>
>
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