JRTextExporter problem

[wyu_nengsih]

I am working with JasperReport in my web application (generating text files) but in some case with a big data (until 2000 rows) my report was error.

file .txt was created but that's file .txt was blank.

could anybody help me.

 

this's my script :

 

File destFile = new File(reportFile.getParent(),jasperPrint.getName() +".txt");

JRTextExporter exporter = new JRTextExporter(); exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, destFile.toString());

Integer pageHeight=new Integer(jasperPrint.getPageHeight()); exporter.setParameter(JRTextExporterParameter.PAGE_WIDTH, Integer.valueOf("175")); exporter.setParameter(JRTextExporterParameter.PAGE_HEIGHT,pageHeight); exporter.setParameter(JRTextExporterParameter.CHARACTER_HEIGHT, new Integer(14));

exporter.exportReport();