Aspose.Cells for JasperReports provides a class named ACXlsExporter for exporting reports to XLS files. It takes a .jrprint file or a JasperPrint object as its input, and exports it to an XLS file. The following code snippet demonstrates how to export the "jasperPrint" object to some file path e.g.., "destFile".
import com.aspose.cells.jasperreports. ACXlsExporter;
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ACXlsExporter exporter = new ACXlsExporter ();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, destFile.toString());
exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.TRUE);
exporter.setParameter(ACXlsExporterParameter.IS_USE_EXCEL_CHART, Boolean.FALSE);
exporter.exportReport();