Try setting a higher -Xmx value; set a lower dpi, 78 is too big if you
just need a thumbnail, it may be possible to calculate the dpi based on
the page cropbox. Or look at your PDFs and make a guess based on what
images you get. I'd expect something around 20-30 for A4 pages.
Tilman
Am 20.09.2018 um 08:55 schrieb paolodiro...@gmail.com:
Hi!
I have the same issue with some PDF and this is my code.
@Async(value = "asyncExecutor")
public void createThumbnailForPDF(File filePDF, String jobNumber)
{
try
{
if (filePDF != null && jobNumber != null &&
!jobNumber.isEmpty())
{
jobNumber = jobNumber.trim();
long fileSizeInBytes = filePDF.length();
long fileSizeInKB = fileSizeInBytes / 1024;
long fileSizeInMB = fileSizeInKB / 1024;
if (fileSizeInMB > PDF_MAX_SIZE)
{
log.error("File too large. PDF_MAX_SIZE: " +
PDF_MAX_SIZE + ". Thumbnail not created. Jobnumber: " + jobNumber);
return;
}
try
{
String fileName = filePDF.getName();
String extension =
fileName.substring(fileName.lastIndexOf("."));
if (!StringUtils.isEmpty(extension) &&
extension.equalsIgnoreCase(".pdf"))
{
PDDocument documentPDF = null;
PDFRenderer pdfRenderer = null;
BufferedImage bim = null;
try
{
documentPDF =
PDDocument.load(filePDF);
if (documentPDF != null)
{
try
{
log.info("PDF document
loaded. Jobnumber: " + jobNumber + ". PDF Title: " +
documentPDF.getDocumentInformation().getTitle());
} catch
(Exception e)
{
log.error("Error reading document title property.", e.getMessage());
}
pdfRenderer =
new PDFRenderer(documentPDF);
if (pdfRenderer
!= null)
{
bim =
pdfRenderer.renderImageWithDPI(0, 78f, ImageType.RGB);
if (bim
!= null)
{
// thumbnail 200
int newHeight200 = (int) getNewHeight(bim.getWidth(), bim.getHeight(), 200);
BufferedImage buff200 = resizeImage(bim, 200, newHeight200);
if (buff200 !=
null) ImageIO.write(buff200, "jpg", new
File(applicationProperties.getDocumentWithSubfolderRootPath() + File.separator + jobNumber +
File.separator + jobNumber + "_200.jpg"));
// thumbnail 100
int newHeight100 = (int) getNewHeight(bim.getWidth(), bim.getHeight(), 100);
BufferedImage buff100 = resizeImage(bim, 100, newHeight100);
if (buff100 !=
null) ImageIO.write(buff100, "jpg", new
File(applicationProperties.getDocumentWithSubfolderRootPath() + File.separator + jobNumber +
File.separator + jobNumber + "_100.jpg"));
}
else
{
log.error("Thumbnail creation, Bitmap is null. Jobnumber: " + jobNumber);
}
}
}
else
log.error("Thumbnail
creation, failed to load PDF. Jobnumber: " + jobNumber);
} catch (IOException io)
{
log.error("Thumbnail
creation, IoException while loading PDF. Jobnumber: " + jobNumber, io.getMessage());
} catch (Exception e)
{
log.error("Failded to create
thumbnails. Jobnumber: " + jobNumber, e.getMessage());
} finally
{
try
{
if (documentPDF
!= null) documentPDF.close();
if (bim != null)
{
bim.flush();
bim =
null;
}
pdfRenderer =
null;
} catch (IOException e)
{
log.error("Error
while empty the variables after thumbnails creation." + e.getMessage());
}
}
}
else
{
log.info("Current file is not a
PDF");
}
} catch (Exception e)
{
log.error("Failded to create thumbnails.
Jobnumber: " + jobNumber, e);
}
}
} catch (Exception e)
{
log.error("createThumbnailForPDF something went wrong during
thumbnails creation.", e.getMessage());
}
}
I think that the code is pretty much correct. So the only solution is to
increase the memory of the JVM?
Regards,
Paolo
On 2016/08/28 11:30:43, Tilman Hausherr <thaush...@t-online.de> wrote:
Am 28.08.2016 um 10:53 schrieb or...@beeriprint.co.il:
looks like MemoryUsageSetting.setupTempFileOnly() has no affect ?
do I use it incorrectlly ?
You're using it correctly. The solution is below:
** I can overcome this problem with -Xmx1500m but had to increase my physical
memory.. , and.., I have much bigger files (250000 pages)
Additionally, if you're doing rendering, take care not to keep the
result images in memory.
Tilman
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