使用的样本：

JRMapArrayDataSource dataSource = new JRMapArrayDataSource(data);

        JasperReport jasperReport = JasperCompileManager.compileReport(reportJRXMLSource);
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport,params,dataSource);

        JRXlsxExporter exporter = new JRXlsxExporter();
        exporter.setParameter(JRXlsExporterParameter.JASPER_PRINT,jasperPrint);
        exporter.setParameter(JRXlsExporterParameter.OUTPUT_FILE_NAME,outputFileName);

        exporter.exportReport();