pdfbox header version info error

Question

I used PDFbox for parsing that pdf document.It throws exception that says it can not find header version info . Any idea?

I think version is 1.3 I saw it when I cast every byte to char . link is http://www.selab.isti.cnr.it/ws-mate/example.pdf

here codes of method and output:

 public String PDFtest(String textLink) throws IOException{
        PDFParser parser;
        String parsedText = null;
        PDFTextStripper pdfStripper;
        PDDocument pdDoc;
        COSDocument cosDoc;
        PDDocumentInformation pdDocInfo;


    StringBuilder sd=new StringBuilder();
    URL link;
    try {
        link = new URL(textLink);
        URLConnection urlConn = link.openConnection();
        BufferedInputStream in = null;
        in = new BufferedInputStream(urlConn.getInputStream());
        byte data[] = new byte[1024];
        in.read(data, 0, 1024);

    parser = new PDFParser(in);
    parser.parse();
    cosDoc = parser.getDocument();
    pdfStripper = new PDFTextStripper();
    pdDoc = new PDDocument(cosDoc);
    parsedText = pdfStripper.getText(pdDoc);
    } catch (MalformedURLException ex) {
        Logger.getLogger(HTMLhelper.class.getName()).log(Level.SEVERE, null, ex);
    }
    catch (NumberFormatException e){
        System.out.println("hata");
    }

    return parsedText;



}

Exception:

Exception in thread "main" java.io.IOException: Error: Header doesn't contain versioninfo
    at org.apache.pdfbox.pdfparser.PDFParser.parseHeader(PDFParser.java:317)
    at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:173)
    at ParsingMachine.HTMLhelper.PDFtest(HTMLhelper.java:99)
    at ParsingMachine.tester.main(tester.java:18)
Java Result: 1

Answer 1

You must be merging a file which is not in pdf format. Please check carefully if you have any file in the list other then pdf.

Answer 2

In my case, I was iterating through the files in a directory.
Windows has a Thumbs.db file in any directory.
This was interfering with the pdf file process.
Applying a filter to only pick PDF files (*.pdf) helped.
Cheers.