SCJP 1.5 (94%), SCWCD 1.4 (91%), SCBCD 1.5 (95%)
Often the most important part of the news is what they didn't tell.
Tim Holloway wrote:I don't see an obvious problem, but you're likely to get this error when something's missing from the XML in the Realm element or when the general server.xml file is invalid. Basically, the Digester it attempting to construct class objects and load attributes into them and it thinks that a critical item is missing.
You might be able to look at one of the other logfiles and find an additional message. If not, turn up the logging level on Tomcat for org.apache.tomcat.util.digester to the debug level. Actually, I thought Digester was just org.apache.digester, but to be really certain, log debug on org.apache in general.
The digester will cheerfully spit out tons of information, but included in the mix will be an indication of what was being processed when the error was encountered.
Using CATALINA_BASE: C:\Documents and Settings\User\.netbeans\6.8\apache-tomcat-6.0.20_base
Using CATALINA_HOME: C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.20
Using CATALINA_TMPDIR: C:\Documents and Settings\User\.netbeans\6.8\apache-tomcat-6.0.20_base\temp
Using JRE_HOME: C:\Program Files\Java\jdk1.6.0_17
Dec 20, 2009 6:27:36 AM org.apache.tomcat.util.digester.Digester startElement
SEVERE: Begin event threw exception
java.lang.NullPointerException
at sun.jkernel.DownloadManager.getBootClassPathEntryForClass(DownloadManager.java:928)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:293)
at java.lang.ClassLoader.loadClass(ClassLoader.java:296)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:205)
at org.apache.tomcat.util.digester.Rule.begin(Rule.java:153)
at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1358)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1339)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.Catalina.load(Catalina.java:521)
at org.apache.catalina.startup.Catalina.load(Catalina.java:555)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:260)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:412)
Dec 20, 2009 6:27:36 AM org.apache.catalina.startup.Catalina load
WARNING: Catalina.start using conf/server.xml:
java.lang.NullPointerException
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2808)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2834)
at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1361)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1339)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.Catalina.load(Catalina.java:521)
at org.apache.catalina.startup.Catalina.load(Catalina.java:555)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:260)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:412)
Caused by: java.lang.NullPointerException
at sun.jkernel.DownloadManager.getBootClassPathEntryForClass(DownloadManager.java:928)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:293)
at java.lang.ClassLoader.loadClass(ClassLoader.java:296)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:205)
at org.apache.tomcat.util.digester.Rule.begin(Rule.java:153)
at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1358)
... 20 more
Dec 20, 2009 6:27:36 AM org.apache.tomcat.util.digester.Digester startElement
SEVERE: Begin event threw exception
java.lang.NullPointerException
at sun.jkernel.DownloadManager.getBootClassPathEntryForClass(DownloadManager.java:928)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:293)
at java.lang.ClassLoader.loadClass(ClassLoader.java:296)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:205)
at org.apache.tomcat.util.digester.Rule.begin(Rule.java:153)
at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1358)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1339)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.Catalina.load(Catalina.java:521)
at org.apache.catalina.startup.Catalina.start(Catalina.java:575)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Dec 20, 2009 6:27:36 AM org.apache.catalina.startup.Catalina load
WARNING: Catalina.start using conf/server.xml:
java.lang.NullPointerException
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2808)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2834)
at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1361)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1339)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.Catalina.load(Catalina.java:521)
at org.apache.catalina.startup.Catalina.start(Catalina.java:575)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.NullPointerException
at sun.jkernel.DownloadManager.getBootClassPathEntryForClass(DownloadManager.java:928)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:293)
at java.lang.ClassLoader.loadClass(ClassLoader.java:296)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:205)
at org.apache.tomcat.util.digester.Rule.begin(Rule.java:153)
at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1358)
... 20 more
Dec 20, 2009 6:27:36 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 0 ms
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.NullPointerException
at org.apache.catalina.startup.Catalina.await(Catalina.java:647)
at org.apache.catalina.startup.Catalina.start(Catalina.java:607)
... 6 more
SCJP 1.5 (94%), SCWCD 1.4 (91%), SCBCD 1.5 (95%)
Often the most important part of the news is what they didn't tell.
Tim Holloway wrote:I think you need to crank up the log level on the Digester another notch. It should be able to display the actual name of the element being parsed. Maybe setting the SAX parser's log level to debug will help.
I've got a feeling that the information should already be there, but I'm just not seeing it. However, the Digester logging can be quite detailed, so when subtlety fails...
SCJP 1.5 (94%), SCWCD 1.4 (91%), SCBCD 1.5 (95%)
Often the most important part of the news is what they didn't tell.
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