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jasper reports – Dynamicjasper Excel and the leading Apostrophe

Posted by: admin May 14, 2020 Leave a comment


Im using DynamicJasper to generate an Excel sheet. Im experiencing some difficulty with the apostrophe prepended to my date columns values.

I defined my column like this:

AbstractColumn dateColumn = ColumnBuilder.getNew().setColumnProperty(
title.getUniqueId(), Date.class.getName()).setTitle(title.getTitle()).
setWidth(150).setFixedWidth(false).setPattern("dd MMM yyyy").build();

Then added the appropiate Date values to my map…..

Everything is fine, apart from the fact that each date in the excel column is a string with a leading apostrophe, and the column is not formated as containing dates.

How is the apostrophe getting there? And why is the column not formatting as a Date?

I would appreciate any pointers.

How to&Answers:

Problem solved.

The issue was with the way i was exporting, i had origionaly told jasperReports to not detect cell type.

So the fix was to set JRXlsExporterParameter.IS_DETECT_CELL_TYPE to TRUE.


JRXlsExporter exporterxls2 = new JRXlsExporter();
exporterxls2.setParameter(JRXlsExporterParameter.IS_COLLAPSE_ROW_SPAN, Boolean.TRUE);
exporterxls2.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_COLUMNS, Boolean.TRUE);
exporterxls2.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);
exporterxls2.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.FALSE);
exporterxls2.setParameter(JRXlsExporterParameter.IS_DETECT_CELL_TYPE, Boolean.TRUE);
exporterxls2.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);
exporterxls2.setParameter(JRXlsExporterParameter.IS_IGNORE_GRAPHICS, Boolean.FALSE);
exporterxls2.setParameter(JRExporterParameter.JASPER_PRINT_LIST, jasperPrints);
exporterxls2.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, reportFile.getPath());

I think some of you may be using an external file to configure the export, in that case the line to include is

Hope it helps 🙂