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Weird Digester exception with Tomcat 4.0.6

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Caesar

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Nov 18, 2002, 10:00:03 PM11/18/02
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Hi,

I am using Digester to create java beans from a xml file. My code runs
perfectly if I run it independently (from its own main() or through
Junit) but I get the following exception when I try to use the exact
same code in Tomcat 4.0.6. I get the same error irrespective of
whether I call my code from a ServletContextListener or from a JSP.
Only one thread calls this code at a time so its presumably not a
thread problem. I think I am using the same jar files in both cases...

Any ideas will be greatly appreciated.

~Caesar
-------------------------------------------

java.lang.NullPointerException
at org.apache.commons.digester.ObjectCreateRule.begin(ObjectCreateRule.java:252)
at org.apache.commons.digester.Digester.startElement(Digester.java:1237)
at org.apache.xerces.parsers.SAXParser.startElement(SAXParser.java:1376)
at org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:1214)

at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScan
ner.java:938)
at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1081)
at org.apache.commons.digester.Digester.parse(Digester.java:1479)
at encentuate.events.AppEventTable.createEventTable(Unknown
Source)
at encentuate.events.AppEventController.initialize(Unknown
Source)
at encentuate.events.AppEventController.getInstance(Unknown
Source)
at org.apache.jsp.test$jsp._jspService(test$jsp.java:60)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j
ava:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

at encentuate.webbridge.filters.ClientAuthFilter.doFilter(Unknown
Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j
ava:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
at java.lang.Thread.run(Thread.java:536)
Nov 19, 2002 10:57:12 AM encentuate.events.AppEventTable
createEventTable
SEVERE: Parsing exception
java.lang.NullPointerException
at org.apache.commons.digester.Digester.createSAXException(Digester.java:2312)
at org.apache.commons.digester.Digester.createSAXException(Digester.java:2332)
at org.apache.commons.digester.Digester.startElement(Digester.java:1240)
at org.apache.xerces.parsers.SAXParser.startElement(SAXParser.java:1376)
at org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:1214)

at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScan
ner.java:938)
at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1081)
at org.apache.commons.digester.Digester.parse(Digester.java:1479)
at encentuate.events.AppEventTable.createEventTable(Unknown
Source)
at encentuate.events.AppEventController.initialize(Unknown
Source)
at encentuate.events.AppEventController.getInstance(Unknown
Source)

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