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https://issues.apache.org/jira/browse/PDFBOX-3236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tilman Hausherr closed PDFBOX-3236.
-----------------------------------
Resolution: Not A Problem
> Out Of Memory exception during converting PDF to PNG
> ----------------------------------------------------
>
> Key: PDFBOX-3236
> URL: https://issues.apache.org/jira/browse/PDFBOX-3236
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.0
> Reporter: Ilya Scherbakov
> Priority: Critical
> Attachments: huk.pdf
>
>
> I use PDFBox 2.0.0 RC3 from TestComplete 10.60. My task is converting of
> multi-page PDF to PNG images. During code execution on the 18th page I
> receive error: java:lang.OutOfMemoryError: Java heap space.
> Error appeared in the string:
> {code}
> JavaClasses.javax_imageio.ImageIO.write_3(pdfRenderer.renderImageWithDPI_2(i,
> 300.0), "png", outputStream); // error
> {code}
> My code is the following:
> {code}
> function convertPDFToImages(pdfPath, folderForImagesPath)
> {
> // Opening PDF
> f = JavaClasses.java_io.File.newInstance(pdfPath);
> docObj = JavaClasses.org_apache_pdfbox_pdmodel.PDDocument.load_2(f);
> var pdfRenderer =
> JavaClasses.org_apache_pdfbox_rendering.PDFRenderer.newInstance(docObj);
>
> var pageObj;
> var fileToWrite;
> var numberOfPages = getNumberOfPDFPages(pdfPath);
> var outputStream;
>
> for (var i = 1; i < numberOfPages; i++)
> {
> // Get the desired page
> pageObj = getPage(docObj, i);
> fileName = folderForImagesPath + "\\etalon_page_" + (i + 1) + ".png";
> fileToWrite = JavaClasses.java_io.File.newInstance(fileName);
> outputStream =
> JavaClasses.javax_imageio.ImageIO.createImageOutputStream(fileToWrite);
>
> JavaClasses.javax_imageio.ImageIO.write_3(pdfRenderer.renderImageWithDPI_2(i,
> 300.0), "png", outputStream); // error
> outputStream.close();
>
>
> }
> docObj.close(); // Closing PDF Document
> Log.Message("Converting of file \"" + pdfPath + "\" was finished
> successfully. See files like etalon_page_NNN.png in the folder \"" +
> folderForImagesPath + "\".");
> }
> {code}
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