Hello,
I have a standalone server generating reports using jasperreports.
The server is supposed to generate about 10000-15000 reports per day.
But after a few hours ( I cannot exactly tell the number of reports done till
then ) the reports are no longer printed.
At the same time, other processes, doing normal windows printing, stop printing
too.
When I restart the server running jasperreports, all printing works ok again.
I assume that the jasperreport server consumes some printer resources so that
the printer system ultimately comes to a stop.
Not being a windows expert, I don't have any idea what kind of resource this
could be and how these resources could be freed.
Here is the code segment of my jasperreport server doing the actual printing.
As you can see, a filled in JasperPrint object and a printer name is passed in:
private void printReport ( JasperPrint jasperPrint, String printerName )
throws JRException
{
PrintRequestAttributeSet printRequestAttributeSet = new
HashPrintRequestAttributeSet ();
printRequestAttributeSet.add (MediaSizeName.ISO_A4);
PrintServiceAttributeSet printServiceAttributeSet = new
HashPrintServiceAttributeSet ();
printServiceAttributeSet.add(new PrinterName(printerName, null));
//printServiceAttributeSet.add(new PrinterName("HP LaserJet 4P", null));
JRPrintServiceExporter exporter = new JRPrintServiceExporter ();
exporter.setParameter (JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter
(JRPrintServiceExporterParameter.PRINT_REQUEST_ATTRIBUTE_SET,
printRequestAttributeSet);
exporter.setParameter
(JRPrintServiceExporterParameter.PRINT_SERVICE_ATTRIBUTE_SET,
printServiceAttributeSet);
exporter.setParameter
(JRPrintServiceExporterParameter.DISPLAY_PAGE_DIALOG, Boolean.FALSE);
exporter.setParameter
(JRPrintServiceExporterParameter.DISPLAY_PRINT_DIALOG, Boolean.FALSE);
exporter.exportReport ();
}
Should I do some cleanup on the exporter object? I welcome any suggestions.
Thanks and kind regards
Christoph
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