Apache/Tomcat Java Exception

**Gutter Rat** · Jul 17 '05, 11:36 PM

Re: Apache/Tomcat Java Exception

ptaz <ptaz.1akl1n@ma il.codecomments .com> wrote:
[color=blue]
> Hi I'm trying to run a web page but I get the following error. Can
> anyone please tell me a solution to this.
>
> Thanks
>
> Ptaz
>
> HTTP Status 500 -
>
> type Exception report
>
> message
>
> description The server encountered an internal error () that prevented
> it from fulfilling this request.
>
> exception
>
> javax.servlet.S ervletException : org/apache/log4j/Category
> at
> org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :249)
> at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:853)
> at
> org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applic
> ationFilterChai n.java:247)
> at
> org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFil
> terChain.java:1 93)
> at
> org.apache.cata lina.core.Stand ardWrapperValve .invoke(Standar dWrapperVal
> ve.java:256)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.cata lina.core.Stand ardContextValve .invoke(Standar dContextVal
> ve.java:191)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.authentica tor.Authenticat orBase.invoke(A uthenticato
> rBase.java:551)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:641)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.cata lina.core.Stand ardContext.invo ke(StandardCont ext.java:24
> 22)
> at
> org.apache.cata lina.core.Stand ardHostValve.in voke(StandardHo stValve.jav
> a:180)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.valves.Err orDispatcherVal ve.invoke(Error DispatcherV
> alve.java:171)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:641)
> at
> org.apache.cata lina.valves.Err orReportValve.i nvoke(ErrorRepo rtValve.jav
> a:163)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:641)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.cata lina.core.Stand ardEngineValve. invoke(Standard EngineValve
> .java:174)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.coyo te.tomcat4.Coyo teAdapter.servi ce(CoyoteAdapte r.java:199)
> at
> org.apache.coyo te.http11.Http1 1Processor.proc ess(Http11Proce ssor.java:8
> 28)
> at
> org.apache.coyo te.http11.Http1 1Protocol$Http1 1ConnectionHand ler.process
> Connection(Http 11Protocol.java :700)
> at
> org.apache.tomc at.util.net.Tcp WorkerThread.ru nIt(PoolTcpEndp oint.java:5
> 84)
> at
> org.apache.tomc at.util.threads .ThreadPool$Con trolRunnable.ru n(ThreadPoo
> l.java:683)
> at java.lang.Threa d.run(Thread.ja va:534)
>
> root cause
>
> java.lang.NoCla ssDefFoundError : org/apache/log4j/Category
> at org.dbforms.tag lib.DbFormTagTE I.<clinit>(DbFo rmTagTEI.java:3 1)
> at sun.reflect.Nat iveConstructorA ccessorImpl.new Instance0(Nativ e
> Method)
> at
> sun.reflect.Nat iveConstructorA ccessorImpl.new Instance(Native Constructor
> AccessorImpl.ja va:39)
> at
> sun.reflect.Del egatingConstruc torAccessorImpl .newInstance(De legatingCon
> structorAccesso rImpl.java:27)
> at
> java.lang.refle ct.Constructor. newInstance(Con structor.java:2 74)
> at java.lang.Class .newInstance0(C lass.java:308)
> at java.lang.Class .newInstance(Cl ass.java:261)
> at
> org.apache.jasp er.compiler.Tag LibraryInfoImpl .createTagInfo( TagLibraryI
> nfoImpl.java:35 3)
> at
> org.apache.jasp er.compiler.Tag LibraryInfoImpl .parseTLD(TagLi braryInfoIm
> pl.java:269)
> at
> org.apache.jasp er.compiler.Tag LibraryInfoImpl .<init>(TagLibr aryInfoImpl
> .java:183)
> at
> org.apache.jasp er.compiler.Par ser.parseTaglib Directive(Parse r.java:354)
> at
> org.apache.jasp er.compiler.Par ser.parseDirect ive(Parser.java :381)
> at
> org.apache.jasp er.compiler.Par ser.parseElemen ts(Parser.java: 795)
> at org.apache.jasp er.compiler.Par ser.parse(Parse r.java:122)
> at
> org.apache.jasp er.compiler.Par serController.p arse(ParserCont roller.java
> :199)
> at
> org.apache.jasp er.compiler.Par serController.p arse(ParserCont roller.java
> :153)
> at
> org.apache.jasp er.compiler.Com piler.generateJ ava(Compiler.ja va:227)
> at org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:36 9)
> at
> org.apache.jasp er.JspCompilati onContext.compi le(JspCompilati onContext.j
> ava:473)
> at
> org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.j
> ava:190)
> at
> org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:295
> )
> at
> org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :241)
> at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:853)
> at
> org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applic
> ationFilterChai n.java:247)
> at
> org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFil
> terChain.java:1 93)
> at
> org.apache.cata lina.core.Stand ardWrapperValve .invoke(Standar dWrapperVal
> ve.java:256)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.cata lina.core.Stand ardContextValve .invoke(Standar dContextVal
> ve.java:191)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.authentica tor.Authenticat orBase.invoke(A uthenticato
> rBase.java:551)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:641)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.cata lina.core.Stand ardContext.invo ke(StandardCont ext.java:24
> 22)
> at
> org.apache.cata lina.core.Stand ardHostValve.in voke(StandardHo stValve.jav
> a:180)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.valves.Err orDispatcherVal ve.invoke(Error DispatcherV
> alve.java:171)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:641)
> at
> org.apache.cata lina.valves.Err orReportValve.i nvoke(ErrorRepo rtValve.jav
> a:163)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:641)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.cata lina.core.Stand ardEngineValve. invoke(Standard EngineValve
> .java:174)
> at
> org.apache.cata lina.core.Stand ardPipeline$Sta ndardPipelineVa lveContext.
> invokeNext(Stan dardPipeline.ja va:643)
> at
> org.apache.cata lina.core.Stand ardPipeline.inv oke(StandardPip eline.java:
> 480)
> at
> org.apache.cata lina.core.Conta inerBase.invoke (ContainerBase. java:995)
> at
> org.apache.coyo te.tomcat4.Coyo teAdapter.servi ce(CoyoteAdapte r.java:199)
> at
> org.apache.coyo te.http11.Http1 1Processor.proc ess(Http11Proce ssor.java:8
> 28)
> at
> org.apache.coyo te.http11.Http1 1Protocol$Http1 1ConnectionHand ler.process
> Connection(Http 11Protocol.java :700)
> at
> org.apache.tomc at.util.net.Tcp WorkerThread.ru nIt(PoolTcpEndp oint.java:5
> 84)
> at
> org.apache.tomc at.util.threads .ThreadPool$Con trolRunnable.ru n(ThreadPoo
> l.java:683)
> at java.lang.Threa d.run(Thread.ja va:534)
> --
> ptaz
> -----------------------------------------------------------------------
> - Posted via http://www.codecomments.com
> -----------------------------------------------------------------------
> -[/color]

root cause

java.lang.NoCla ssDefFoundError : org/apache/log4j/Category
at org.dbforms.tag lib.DbFormTagTE I.<clinit>(DbFo rmTagTEI.java:3 1)
at sun.reflect.Nat iveConstructorA ccessorImpl.new Instance0(Nativ e
Method)

The above line appears to be telling you that Log4J isn't setup correctly
(NoClassDefFoun dError). It appears to be having a problem instantiating a
log4j object. A few things to check:

1. Is log4j-1.2.7.jar installed in C:\Tomcat x.x.xx\common\l ib directory?
2. Is log4j.propertie s properly located?
3. Did you properly instantiate the logger?

import org.apache.log4 j.Logger;
protected Logger log = Logger.getLogge r(this.getClass ());

It's a starting point anyway.

Later

Apache/Tomcat Java Exception

Apache/Tomcat Java Exception

Comment