<textField pattern="d/M/yyyy" isBlankWhenNull="true">
				<reportElement x="710" y="0" width="90" height="15" uuid="f662cae8-4d3d-4ffc-bad2-5ad389916774">
					<property name="com.jaspersoft.studio.unit.height" value="px"/>
					<property name="net.sf.jasperreports.export.xls.detect.cell.type" value="true"/>
				</reportElement>
				<textFieldExpression><![CDATA[$F{LASTMOVEDATE}]]></textFieldExpression>
			</textField>

    public void exportXlsx() throws JRException {
        Map<String, String> dateFormats = new HashMap<String, String>();
       dateFormats.put("EEE, MMM d, yyyy", "ddd, mmm d, yyyy");

        JRXlsxExporter exporter = new JRXlsxExporter();
        SimpleXlsxReportConfiguration repConfig = new SimpleXlsxReportConfiguration();
        exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
		exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(getOutputStream(".xlsx")));
        repConfig.setDetectCellType(Boolean.TRUE);
        repConfig.setFormatPatternsMap(dateFormats);
        exporter.setConfiguration(repConfig);
        exporter.exportReport();
    }