PDFBox outofmemory当打印

我有一个软件直接用默认打印机打印PDF文件的问题。有时我会在用户打印PDF文件时收到OutOfMemoryError，但我不知道是什么问题。PDFBox outofmemory当打印

java.lang.OutOfMemoryError: Java heap space 
    at java.awt.image.DataBufferInt.<init>(Unknown Source) 
    at java.awt.image.Raster.createPackedRaster(Unknown Source) 
    at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source) 
    at java.awt.image.BufferedImage.<init>(Unknown Source) 
    at org.apache.pdfbox.pdmodel.graphics.color.PDDeviceGray.toRGBImage(PDDeviceGray.java:78) 
    at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from1Bit(SampledImageReader.java:216) 
    at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getRGBImage(SampledImageReader.java:142) 
    at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDImageXObject.java:340) 
    at org.apache.pdfbox.rendering.PageDrawer.drawImage(PageDrawer.java:793) 
    at org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:62) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:815) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:472) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:446) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:178) 
    at org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:70) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:815) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:472) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:446) 
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:149) 
    at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:189) 
    at org.apache.pdfbox.rendering.PDFRenderer.renderPage(PDFRenderer.java:208) 
    at org.apache.pdfbox.rendering.PDFRenderer.renderPageToGraphics(PDFRenderer.java:169) 
    at org.apache.pdfbox.printing.PDFPrintable.print(PDFPrintable.java:184) 
    at sun.print.RasterPrinterJob.printPage(Unknown Source) 
    at sun.print.RasterPrinterJob.print(Unknown Source)

我使用此代码来加载PDFBox并使用Java打印PDF文件。

try (PDDocument doc = PDDocument.load(fileToPrint)) { 

    PrinterJob job = PrinterJob.getPrinterJob(); 

    job.setJobName(jobName); 
    job.setPageable(new PDFPageable(doc, Orientation.AUTO, false, 300)); 
    job.setPrintService(printerService); 

    ... 

    job.print(attributes); 

    ... 

} catch (IOException e) { 
    ... 
} catch (PrinterException e) { 
    ... 
}

方法与PDFBox的

@Test 
    public void currentVersionTest() throws IOException, PrinterException { 

     String jobName = testDocumentPdf.getFileName().toString(); 

     try (PDDocument doc = PDDocument.load(testDocumentPdf.toFile(), MemoryUsageSetting.setupTempFileOnly())) { 

     PrinterJob job = PrinterJob.getPrinterJob(); 

     job.setJobName(jobName); 
     job.setPageable(new PDFPageable(doc, Orientation.AUTO, false, 0)); 
     job.setPrintService(printService); 

     PrintRequestAttributeSet attributes = new HashPrintRequestAttributeSet(); 
     attributes.add(Chromaticity.MONOCHROME); 

     job.print(attributes); 

     } 

     checkJobInQueue(jobName); 
    }

来源

2017-04-24 fjtorres

内存消耗是依赖于几个因素，打印诸如图像，DPI设置的数量等。您可能需要调整应用程序的内存设置。

请看https://pdfbox.apache.org/2.0/faq.html#outofmemoryerror寻求一些改善内存需求/设置的建议。

来源

2017-04-24 08:56:19

谢谢@Maruan Sahyoun，我将改变代码使用'PDDocument.load（文件，MemoryUsageSetting.setupTempFileOnly（））'而不是'PDDocument.load（文件）' – fjtorres

在审查了问题后，我发现了一件事。当我发送打印PDF文件的作业时，我可以看到打印机队列中的大小，它太大了。例如，包含268页的文档显示大小约为8 GB。这很奇怪，例如打印使用福昕阅读器的文档大小是57 MB左右。文档的实际大小为12 MB，我使用Windows 7检查作业大小。 – fjtorres

@fjtorres这很可能是因为该文档在由Java Printing API打印之前进行了光栅化处理。 –

PDFBox outofmemory当打印

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