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https://issues.apache.org/jira/browse/PDFBOX-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13849134#comment-13849134
]
Tilman Hausherr edited comment on PDFBOX-1769 at 12/16/13 1:07 PM:
-------------------------------------------------------------------
There's another problem in that parser:
I get this exception with the file amyuni2_05d__pdf1_3_acro4x.pdf (it was once
part of the project, now no more, but it can still be found on the web):
java.io.IOException: Object (48:0) at offset 161333 does not end with 'endobj'.
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parseObjectDynamically(NonSequentialPDFParser.java:1312)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parseObjectDynamically(NonSequentialPDFParser.java:1159)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parseDictObjects(NonSequentialPDFParser.java:1133)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.initialParse(NonSequentialPDFParser.java:470)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parse(NonSequentialPDFParser.java:731)
at org.apache.pdfbox.pdmodel.PDDocument.loadNonSeq(PDDocument.java:1139)
at org.apache.pdfbox.pdmodel.PDDocument.loadNonSeq(PDDocument.java:1122)
at pdfboxpageimageextraction.ExtractImages.doPdf(ExtractImages.java:134)
at pdfboxpageimageextraction.ExtractImages.main(ExtractImages.java:78)
This is true, the "endobject" is indeed missing in that file. However the
content of endObjectKey is 49 0 obj, i.e. the start of a new object.
So my suggestion is to change the segment at
{code}
if (!endObjectKey.startsWith("endobj"))
{
throw new IOException("Object (" + readObjNr + ":" + readObjGen + ") at
offset "
+ offsetOrObjstmObNr + " does not end with 'endobj'.");
}
{code}
to
{code}
if (!endObjectKey.startsWith("endobj"))
{
if (endObjectKey.endsWith(" obj"))
LOG.warn("Object (" + readObjNr + ":" + readObjGen + ") at offset "
+ offsetOrObjstmObNr + " does not end with 'endobj' but with '" +
endObjectKey + "'");
else
throw new IOException("Object (" + readObjNr + ":" + readObjGen + ")
at offset "
+ offsetOrObjstmObNr + " does not end with 'endobj' but with '" +
endObjectKey + "'"); }
{code}
was (Author: tilman):
I get this exception with the file amyuni2_05d__pdf1_3_acro4x.pdf (it was once
part of the project, now no more, but it can still be found on the web):
java.io.IOException: Object (48:0) at offset 161333 does not end with 'endobj'.
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parseObjectDynamically(NonSequentialPDFParser.java:1312)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parseObjectDynamically(NonSequentialPDFParser.java:1159)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parseDictObjects(NonSequentialPDFParser.java:1133)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.initialParse(NonSequentialPDFParser.java:470)
at
org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parse(NonSequentialPDFParser.java:731)
at org.apache.pdfbox.pdmodel.PDDocument.loadNonSeq(PDDocument.java:1139)
at org.apache.pdfbox.pdmodel.PDDocument.loadNonSeq(PDDocument.java:1122)
at pdfboxpageimageextraction.ExtractImages.doPdf(ExtractImages.java:134)
at pdfboxpageimageextraction.ExtractImages.main(ExtractImages.java:78)
This is true, the "endobject" is indeed missing in that file. However the
content of endObjectKey is 49 0 obj, i.e. the start of a new object.
So my suggestion is to change the segment at
{code}
if (!endObjectKey.startsWith("endobj"))
{
throw new IOException("Object (" + readObjNr + ":" + readObjGen + ") at
offset "
+ offsetOrObjstmObNr + " does not end with 'endobj'.");
}
{code}
to
{code}
if (!endObjectKey.startsWith("endobj"))
{
if (endObjectKey.endsWith(" obj"))
LOG.warn("Object (" + readObjNr + ":" + readObjGen + ") at offset "
+ offsetOrObjstmObNr + " does not end with 'endobj' but with '" +
endObjectKey + "'");
else
throw new IOException("Object (" + readObjNr + ":" + readObjGen + ")
at offset "
+ offsetOrObjstmObNr + " does not end with 'endobj' but with '" +
endObjectKey + "'"); }
{code}
> Fix crash on invalid xref
> -------------------------
>
> Key: PDFBOX-1769
> URL: https://issues.apache.org/jira/browse/PDFBOX-1769
> Project: PDFBox
> Issue Type: Wish
> Components: Parsing
> Affects Versions: 1.8.2
> Reporter: William Palmer
> Assignee: Andreas Lehmkühler
> Fix For: 1.8.4, 2.0.0
>
>
> Need to search for a correct xref start address
> Example file:
> http://digitalcorpora.org/corp/nps/files/govdocs1/020/020747.pdf
> Exception in thread "main" java.io.IOException: Error: Expected an integer
> type, actual='ref'
> at org.apache.pdfbox.pdfparser.BaseParser.readInt(BaseParser.java:1622)
> Using the code:
> PDFTextStripper ts = new PDFTextStripper();
> PrintWriter out = new PrintWriter(new FileWriter(new File (pFile+".txt")));
> RandomAccess scratchFile = new
> RandomAccessFile(File.createTempFile("pdfbox-", ".tmp"), "rw");
> PDDocument doc = PDDocument.loadNonSeq(new File(pFile), scratchFile)
> ts.setForceParsing(true);
> ts.writeText(doc, out);
> Related: PDFBOX-1757
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