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https://issues.apache.org/jira/browse/PDFBOX-1585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13644672#comment-13644672
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Sascha Szott commented on PDFBOX-1585:
--------------------------------------
Indeed, you're absolutely right. xpdf is also complaining about the file. But
what is the preferred way of dealing with such messy PDF files. Is it possible
to make getText() more robust or is it beyond the scope of the library?
> org.apache.pdfbox.util.PDFTextStripper.getText() causes thread to block
> indefinitely
> ------------------------------------------------------------------------------------
>
> Key: PDFBOX-1585
> URL: https://issues.apache.org/jira/browse/PDFBOX-1585
> Project: PDFBox
> Issue Type: Bug
> Components: PDFReader, Text extraction
> Affects Versions: 1.8.1
> Environment: Ubuntu Linux 10.04
> Solaris 10
> Java 1.6.0_34
> Reporter: Sascha Szott
>
> URL of the problematic pdf file is http://www.redalyc.org/pdf/540/54017220.pdf
> My program tries to extract the fulltext of the given pdf file in the
> following manner:
> {code}
> String fileName = "/home/sascha/testfile.pdf" // 1
> PDDocument pdDoc = PDDocument.load(fileName, true); // 2
> PDFTextStripper text = new PDFTextStripper(); // 3
> String fullText = text.getText(pdDoc); // 4
> {code}
> The call in line 4 causes the thread to block indefinitely (runs now for more
> than two days without making any progress). The file is stored in a local
> file system (no network interaction occurs).
> jstack indicates that the thread is not deadlocked:
> {code}
> "main" prio=10 tid=0x000000004187d800 nid=0x6ed8 runnable [0x00007f9e28e56000]
> java.lang.Thread.State: RUNNABLE
> at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
> at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
> - locked <0x00000007d73a84a0> (a java.io.BufferedInputStream)
> at java.io.FilterInputStream.read(FilterInputStream.java:66)
> at java.io.PushbackInputStream.read(PushbackInputStream.java:122)
> at
> org.apache.pdfbox.io.PushBackInputStream.read(PushBackInputStream.java:91)
> at
> org.apache.pdfbox.pdfparser.BaseParser.parseCOSHexString(BaseParser.java:1006)
> at
> org.apache.pdfbox.pdfparser.BaseParser.parseCOSString(BaseParser.java:808)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser.parseNextToken(PDFStreamParser.java:260)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser.access$000(PDFStreamParser.java:46)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser$1.tryNext(PDFStreamParser.java:182)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser$1.hasNext(PDFStreamParser.java:194)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:255)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:235)
> at org.apache.pdfbox.util.operator.Invoke.process(Invoke.java:67)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:554)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:268)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:235)
> at org.apache.pdfbox.util.operator.Invoke.process(Invoke.java:67)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:554)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:268)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:235)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:215)
> at
> org.apache.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:455)
> at
> org.apache.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:379)
> at
> org.apache.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:335)
> at
> org.apache.pdfbox.util.PDFTextStripper.getText(PDFTextStripper.java:254)
> at
> de.kobv.ked.extraction.FulltextExtraction.getFulltext(FulltextExtraction.java:65)
> {code}
> Any idea or advice on how to fix that problem? Is it possible to set up a
> timeout for the extraction operation?
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