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From "Ross Gardler (JIRA)" <j...@apache.org>
Subject [jira] Closed: (COMDEV-4) External entity in XML causing null pointer exception during DocumentBuilder.parse
Date Fri, 04 Dec 2009 12:24:20 GMT

     [ https://issues.apache.org/jira/browse/COMDEV-4?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ross Gardler closed COMDEV-4.
-----------------------------

    Resolution: Fixed
      Assignee: Ross Gardler

Pointed poster in the right direction and added an entry to the ComDev FAQ about how to get
user level support (should propogate to the website within the hour)

> External entity in XML causing null pointer exception during DocumentBuilder.parse
> ----------------------------------------------------------------------------------
>
>                 Key: COMDEV-4
>                 URL: https://issues.apache.org/jira/browse/COMDEV-4
>             Project:  	 Community Development 
>          Issue Type: Question
>            Reporter: sri kumar 
>            Assignee: Ross Gardler
>
> I was trying to parse a XML Document using DOM Parser.
> I got null pointer exception while executing doc = builder.parse(xmlDataFile);
> There were few entities in the XML data file. On removing a particular entity, i was
able to parse the file successfully
> The entity was some thing like this
> <!ENTITY SAMPLE.TIF SYSTEM "SAMPLE.TIF" NDATA TIF>
> What could be the reason?
> EDIT:
> Here is the code:
>         DocumentBuilderFactory aFactory = DocumentBuilderFactory.newInstance();
>         aFactory.setValidating(false);
>         aFactory.setFeature("http://xml.org/sax/features/namespaces", false);
>         aFactory.setFeature("http://apache.org/xml/features/validation/schema", false);
>         aFactory.setIgnoringComments(true);
>         builder = aFactory.newDocumentBuilder();
>         doc = builder.parse(xmlDataFile);
> This is the trace:
>  at com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl.setChunkIndex(DeferredDocumentImpl.java:1944)
>     at com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl.appendChild(DeferredDocumentImpl.java:644)
>     at com.sun.org.apache.xerces.internal.parsers.AbstractDOMParser.characters(AbstractDOMParser.java:1191)
>     at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.characters(XMLDTDValidator.java:862)
>     at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:463)
>     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.DOMParser.parse(DOMParser.java:225)
>     at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
>     at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:180)
>     at XMLParser.Parse(XMLParser.java:89)
>     at Main.main(Main.java:116)
> 89 line number points to -> doc = builder.parse(xmlDataFile);

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