Question

我正在使用Java Print Service打印tiff文件，它会导致“ java.lang.OutOfMemoryError：Java堆空间”。

      private void sendToPrinter(String fileToPrint) throws PrintException, IOException
      {
          /* Use the pre-defined flavor for a GIF from an InputStream */
          DocFlavor flavor = DocFlavor.INPUT_STREAM.PNG;

          /* Create a set which specifies how the job is to be printed */
          PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
          aset.add(MediaSizeName.NA_LETTER);
          aset.add(new Copies(1));

          /* Create a Print Service using the default printer */
          PrintService ps=PrintServiceLookup.lookupDefaultPrintService();
          DocPrintJob job=ps.createPrintJob();

//          System.gc();
          try (FileInputStream fis=new FileInputStream(fileToPrint))
          {
              Doc doc=new SimpleDoc(fis, flavor, null); 
              job.print(doc, aset);
          }
      }

堆栈跟踪：

2020-04-23 15:32:03|DEBUG|SHPSKD010_160_TEST|Printing \\kanesrv02\imagedocs\certs\61107282.tif
2020-04-23 15:32:20|ERROR|SHPSKD010_160_TEST|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 sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
    at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
    at sun.java2d.loops.MaskBlit$General.MaskBlit(Unknown Source)
    at sun.java2d.loops.Blit$GeneralMaskBlit.Blit(Unknown Source)
    at sun.java2d.pipe.DrawImage.renderImageXform(Unknown Source)
    at sun.java2d.pipe.DrawImage.transformImage(Unknown Source)
    at sun.java2d.pipe.DrawImage.scaleImage(Unknown Source)
    at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
    at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
    at sun.java2d.pipe.ValidatePipe.copyImage(Unknown Source)
    at sun.java2d.SunGraphics2D.copyImage(Unknown Source)
    at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
    at sun.awt.windows.WPathGraphics.drawImageToPlatform(Unknown Source)
    at sun.print.PathGraphics.drawImage(Unknown Source)
    at sun.print.PathGraphics.drawImage(Unknown Source)
    at sun.print.ImagePrinter.print(Unknown Source)
    at sun.print.RasterPrinterJob.printPage(Unknown Source)
    at sun.print.RasterPrinterJob.print(Unknown Source)
    at sun.print.Win32PrintJob.printableJob(Unknown Source)
    at sun.print.Win32PrintJob.print(Unknown Source)
    at com.kanebridge.op.ui.SHPSKD010_160_TEST.sendToPrinter(Unknown Source)
    at com.kanebridge.op.ui.SHPSKD010_160_TEST.PRTALL_actionPerformed(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.kanebridge.common.ui.BasePanel.callMethod(Unknown Source)
    at com.kanebridge.common.ui.BasePanel.callMethod(Unknown Source)

tif文件非常小，超过500K，包含7页。 Google搜索了很多，但是找不到太多帮助。看到一个帖子，建议在打印之前明确调用垃圾回收。试过了，但是没有用。 JVM堆大小已设置为最大512mb。

java-vm-args="-Xms128m -Xmx512m -XX:PermSize=32m -XX:MaxPermSize=128m"

该程序的目标是在处理完货件后自动将证书的副本自动打印（无需用户交互）到用户的默认打印机。

由于文件不那么大，为什么会引起内存问题，以及如何解决？

谢谢。

Answer 1

请尝试以下步骤。

使用以下命令从命令提示符启动应用程序

java -jar -Xmx1024M -XX：+ PrintGCDetails -XX：+ PrintGCDateStamps“ \ your.jar” >> C：\ Temp \ Log.txt
打开一个新的命令提示符，并导航到JDK Bin目录并键入

jcmd
现在记下您的进程的进程ID并输入

jmap -heap
1. 现在您将知道为年轻人，老人和堆分配了多少内存，以及使用了多少百分比。

这将帮助您弄清楚应用程序正在发生什么。请尝试并告诉我们是否有帮助。

使用Java Print Service打印TIFF文件时出现java.lang.OutOfMemoryError

1 个答案: