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https://issues.apache.org/jira/browse/PDFBOX-1226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205123#comment-13205123
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Adam Nichols commented on PDFBOX-1226:
--------------------------------------
There are a few different options here, the easiest and fastest would be to
increase the amount of memory available to your JVM. If you need to get code
that works straight away, you should go this route.
However, counting pages shouldn't require a lot of memory (nor even reading the
entire file for that matter). PDFBOX-1000 is tracking a new parser which isn't
done yet, but it might actually be far enough along to count pages (it's been a
while since I had the code open). This parser will probably take quite a while
to complete, so there's also PDFBOX-1199 which is a shorter term solution.
Sorry I can't dig into the code right now and give you a more certain answer.
Hopefully
Also, if you're not using the getNumberOfPages() method, take a look at
PDFBOX-911 for some very simple sample code.
> Counting pages of a PDF gives OutOfMemoryError
> -----------------------------------------------
>
> Key: PDFBOX-1226
> URL: https://issues.apache.org/jira/browse/PDFBOX-1226
> Project: PDFBox
> Issue Type: Bug
> Components: PDFReader
> Affects Versions: 1.6.0
> Environment: Windows 7 / Windows XP
> Reporter: Anca Zapuc
> Attachments: Big_no_pages.7z
>
>
> I have a pdf ( 397 MB) and I am trying to count the pages.
> I am able to open the PDF with AdobeReader 9, but no with FoxitReader.
> Code:
> PDDocument doc = null;
> File temp = null;
> RandomAccessFile rand = null;
> int nr = 0;
> try {
> //create a temporary file needed by the PDFBox when dealing
> with PDFs really really large
> temp = new File("e:/temp.tmp");
> //using random access file needed for PDF really large
> rand = new RandomAccessFile(temp,"rw");
> doc = PDDocument.load(file,rand);
> nr = doc.getNumberOfPages();
> }catch(Exception e){
> e.printStackTrace();
> }
> Got following exception:
> org.apache.pdfbox.exceptions.WrappedIOException
> at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:240)
> at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1069)
> at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1022)
> at PDFBoxExample.getHugeNrOfFiles(PDFBoxExample.java:36)
> at PDFBoxExample.main(PDFBoxExample.java:258)
> Caused by: java.lang.OutOfMemoryError: Java heap space
> at java.lang.AbstractStringBuilder.<init>(AbstractStringBuilder.java:45)
> at java.lang.StringBuffer.<init>(StringBuffer.java:79)
> at
> org.apache.pdfbox.pdfparser.BaseParser.readString(BaseParser.java:1121)
> at
> org.apache.pdfbox.pdfparser.BaseParser.parseCOSStream(BaseParser.java:402)
> at org.apache.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:552)
> at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:184)
> ... 4 more
> I attached the PDF.
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