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From "Bertrand Delacretaz (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COMDEV-4) External entity in XML causing null pointer exception during DocumentBuilder.parse
Date Thu, 03 Dec 2009 10:18:23 GMT

    [ https://issues.apache.org/jira/browse/COMDEV-4?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12785249#action_12785249
] 

Bertrand Delacretaz commented on COMDEV-4:
------------------------------------------

Doesn't look like a Community Development issue...

> 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 
>
> 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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