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Posted to dev@pdfbox.apache.org by "Jukka Zitting (JIRA)" <ji...@apache.org> on 2008/08/04 19:54:44 UTC
[jira] Created: (PDFBOX-350) Null pointer exception during text
extraction
Null pointer exception during text extraction
---------------------------------------------
Key: PDFBOX-350
URL: https://issues.apache.org/jira/browse/PDFBOX-350
Project: PDFBox
Issue Type: Bug
Components: Text extraction
Reporter: Jukka Zitting
[Issue from SourceForge]
http://sourceforge.net/tracker/index.php?func=detail&aid=1934566&group_id=78314&atid=552832
Parsing the following document from the US gov website
http://www.ssa.gov/multilanguage/Arabic/10101-AR.pdf
Exception in thread "main" java.lang.NullPointerException
at
org.pdfbox.util.PDFStreamEngine.showString(PDFStreamEngine.java:360)
at org.pdfbox.util.operator.ShowText.process(ShowText.java:64)
at
org.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:452)
at
org.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:215)
at
org.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:174)
at
org.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:336)
at
org.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:259)
at
org.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:216)
at org.pdfbox.ExtractText.main(ExtractText.java:244)
This is caused by an unchecked reference c.equals( " " ) in line 377 of
PDFStreamEngine.java
changing this line to
if( (string[i] == 0x20) && c != null && c.equals( " " ) )
eliminates the null pointer de-ref, but the output contains many ugly
embedded nulls, which might be seen here as an excerpt
يف اوشاع اذإ ماعطلا عباوطل نيلهؤملا
بناجلأا ،يلي اميف �������null���
ماعطلا عباوط جمانرب دعاسي
in one case the word null is printed several dozen times.
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[jira] Resolved: (PDFBOX-350) Null pointer exception during text
extraction
Posted by "Jukka Zitting (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PDFBOX-350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jukka Zitting resolved PDFBOX-350.
----------------------------------
Resolution: Fixed
[Comment on SourceForge]
Date: 2008-05-22 20:26
Sender: danielwilson
Logged In: YES
user_id=1737686
Originator: NO
Thanks for the correction code & test case, Jeffrey. I have incorporated
your correction.
> Null pointer exception during text extraction
> ---------------------------------------------
>
> Key: PDFBOX-350
> URL: https://issues.apache.org/jira/browse/PDFBOX-350
> Project: PDFBox
> Issue Type: Bug
> Components: Text extraction
> Reporter: Jukka Zitting
>
> [Issue from SourceForge]
> http://sourceforge.net/tracker/index.php?func=detail&aid=1934566&group_id=78314&atid=552832
> Parsing the following document from the US gov website
> http://www.ssa.gov/multilanguage/Arabic/10101-AR.pdf
> Exception in thread "main" java.lang.NullPointerException
> at
> org.pdfbox.util.PDFStreamEngine.showString(PDFStreamEngine.java:360)
> at org.pdfbox.util.operator.ShowText.process(ShowText.java:64)
> at
> org.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:452)
> at
> org.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:215)
> at
> org.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:174)
> at
> org.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:336)
> at
> org.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:259)
> at
> org.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:216)
> at org.pdfbox.ExtractText.main(ExtractText.java:244)
> This is caused by an unchecked reference c.equals( " " ) in line 377 of
> PDFStreamEngine.java
> changing this line to
> if( (string[i] == 0x20) && c != null && c.equals( " " ) )
> eliminates the null pointer de-ref, but the output contains many ugly
> embedded nulls, which might be seen here as an excerpt
> يف اوشاع اذإ ماعطلا عباوطل نيلهؤملا
> بناجلأا ،يلي اميف �������null���
> ماعطلا عباوط جمانرب دعاسي
> in one case the word null is printed several dozen times.
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You can reply to this email to add a comment to the issue online.