Exception when converting tiff file to pdf file with iText

3
votes

When I try to convert a tiff file to pdf file by using itextpdf 5.5.5, the following exception occurs:

java.lang.RuntimeException: Scanline must begin with EOL code word. at com.itextpdf.text.pdf.codec.TIFFFaxDecoder.readEOL(TIFFFaxDecoder.java:1303) at com.itextpdf.text.pdf.codec.TIFFFaxDecoder.decode2D(TIFFFaxDecoder.java:811) at com.itextpdf.text.pdf.codec.TiffImage.getTiffImage(TiffImage.java:223) at com.itextpdf.text.pdf.codec.TiffImage.getTiffImage(TiffImage.java:315) at com.itextpdf.text.pdf.codec.TiffImage.getTiffImage(TiffImage.java:303) at com.itextpdf.text.Image.getInstance(Image.java:308) at com.itextpdf.text.Image.getInstance(Image.java:242) at com.itextpdf.text.Image.getInstance(Image.java:365) at com.minstone.convert.PicConvertor.convertPicToPdf1(PicConvertor.java:81) at com.minstone.convert.DocConverter$ConvertWork.king2pdf(DocConverter.java:143) at com.minstone.convert.DocConverter$ConvertWork.run(DocConverter.java:99) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619)

I can open the tiff file in any image viewer, so it's valid.

2
javapdfitexttiff
Try using a getInstance() method with the boolean "recoverFromImageError". If that doesn't work, try instantiating a TiffImage object with the "direct" boolean set to true. If that doesn't work, please share the tiff. – Michaël Demey
thanks for your answer,I just using a getInstance() method with the boolean "recoverFromImageError" and fix it ! – hecatcat
@MichaëlDemey You should make that an answer. – Bruno Lowagie

2 Answers

3
votes

iText has a few fallbacks when dealing with invalid or corrupt Tiff files. By default, these fallbacks aren't used, you'll need to explicitly use one of the getinstance() methods with the recoverFromImageError flag set to true if you want iText to try and parse the invalid Tiff files (e.g. http://api.itextpdf.com/itext/com/itextpdf/text/Image.html#getInstance%28byte[],%20boolean%29 )

If this boolean is set to true iText will only throw an error if it exhausted all of its options. This should be a sign to inspect your TIFF file...

Another workaround could be to use TiffImage and bypassing the Image class altogether. TiffImage also uses the recoverFromImageError flag, but it also has an additional flag called "direct" which might also solve your issues. (http://api.itextpdf.com/itext/com/itextpdf/text/pdf/codec/TiffImage.html)

0
votes

Since there is no code snippet available, I guess you were using below code to read the image.

Image tiffImg=TiffImage.getTiffImage(randomAccessFileOrArrayObj, pageNum);

If so change it to (Add true to try recovering the file)

Image tiffImg=TiffImage.getTiffImage(randomAccessFileOrArrayObj, true, pageNum);