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From Simone Tripodi <simonetrip...@apache.org>
Subject Re: [digester] NullPointerException
Date Thu, 31 Mar 2011 22:26:17 GMT
Hi Patrick,
can you link also to the XML you're trying to parse?
Simo

http://people.apache.org/~simonetripodi/
http://www.99soft.org/



On Thu, Mar 31, 2011 at 10:24 PM, Patrick Diviacco
<patrick.diviacco@gmail.com> wrote:
> Hi,
>
> I'm trying to store the content of a xml file into memory but for some
> reason I get following NullPointerException.. (this is the code:
> http://pastie.org/1740948):
>
> Clusterer...
> Reading XML...
> Mar 31, 2011 10:19:17 PM org.apache.commons.digester.Digester endElement
> SEVERE: End event threw exception
> 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.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
> at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:220)
> at org.apache.commons.digester.Rule.end(Rule.java:257)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1345)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
> at
> com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
> at
> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
> at org.apache.commons.digester.Digester.parse(Digester.java:1871)
> at XMLReader.read(XMLReader.java:74)
> at Clusterer.<init>(Clusterer.java:49)
> at Main.main(Main.java:11)
> Caused by: java.lang.NullPointerException
> at XMLReader$FlickrCollection.addDocument(XMLReader.java:108)
> ... 22 more
> java.lang.NullPointerException
> at
> org.apache.commons.digester.Digester.createSAXException(Digester.java:3363)
> at
> org.apache.commons.digester.Digester.createSAXException(Digester.java:3389)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1348)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938)
> 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:511)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
> 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:119)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
> Reading XML...
> at
> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
> at org.apache.commons.digester.Digester.parse(Digester.java:1871)
> at XMLReader.read(XMLReader.java:74)
> at Clusterer.<init>(Clusterer.java:49)
> at Main.main(Main.java:11)
> Caused by: java.lang.NullPointerException
> at XMLReader$FlickrCollection.addDocument(XMLReader.java:108)
> 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.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
> at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:220)
> at org.apache.commons.digester.Rule.end(Rule.java:257)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1345)
> ... 14 more
> Mar 31, 2011 10:19:17 PM org.apache.commons.digester.Digester endElement
> SEVERE: End event threw exception
> 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.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
> at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:220)
> at org.apache.commons.digester.Rule.end(Rule.java:257)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1345)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
> at
> com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
> at
> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
> at org.apache.commons.digester.Digester.parse(Digester.java:1871)
> at XMLReader.read(XMLReader.java:74)
> at Clusterer.<init>(Clusterer.java:50)
> at Main.main(Main.java:11)
> Caused by: java.lang.NullPointerException
> at XMLReader$FlickrCollection.addDocument(XMLReader.java:108)
> ... 22 more
> java.lang.NullPointerException
> at
> org.apache.commons.digester.Digester.createSAXException(Digester.java:3363)
> at
> org.apache.commons.digester.Digester.createSAXException(Digester.java:3389)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1348)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938)
> 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:511)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
> 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:119)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
> at
> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
> at org.apache.commons.digester.Digester.parse(Digester.java:1871)
> at XMLReader.read(XMLReader.java:74)
> at Clusterer.<init>(Clusterer.java:50)
> at Main.main(Main.java:11)
> Caused by: java.lang.NullPointerException
> at XMLReader$FlickrCollection.addDocument(XMLReader.java:108)
> 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.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
> at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:220)
> at org.apache.commons.digester.Rule.end(Rule.java:257)
> []
> []
> at org.apache.commons.digester.Digester.endElement(Digester.java:1345)
> ... 14 more
>

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