public void csv() throws JRException {
long start = System.currentTimeMillis();
File sourceFile = new File("build/reports/DataSourceReport.jrprint");
JasperPrint jasperPrint = (JasperPrint) JRLoader.loadObject(sourceFile);
File destFile = new File(sourceFile.getParent(), jasperPrint.getName() + ".csv");
JRCsvExporter exporter = new JRCsvExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, destFile.toString());
exporter.exportReport();
System.err.println("CSV creation time : " + (System.currentTimeMillis() - start));
}
private byte[] generaCsv(List lista) throws JRException {
Map<String, Object> params = new HashMap<>();
JRCsvExporter exporter = new JRCsvExporter();
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
JasperDesign jd =
JRXmlLoader.load(
this.getClass()
.getResourceAsStream("/mx/edu/um/mateo/inventario/reportes/almacenes.jrxml"));
JasperReport jasperReport = JasperCompileManager.compileReport(jd);
JasperPrint jasperPrint =
JasperFillManager.fillReport(jasperReport, params, new JRBeanCollectionDataSource(lista));
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, byteArrayOutputStream);
exporter.exportReport();
byte[] archivo = byteArrayOutputStream.toByteArray();
return archivo;
}
private String saveReport(JasperPrint jasperPrint, String format, String destFileName)
throws JRException, Exception {
String reportName = null;
switch (Format.valueOf(format)) {
case pdf:
JasperExportManager.exportReportToPdfFile(jasperPrint, destFileName);
reportName = destFileName;
break;
case html:
JasperExportManager.exportReportToHtmlFile(jasperPrint, destFileName);
reportName = createZip(destFileName);
break;
case xml:
JasperExportManager.exportReportToXmlFile(jasperPrint, destFileName, true);
reportName = createZip(destFileName);
break;
case csv:
JRCsvExporter exporter = new JRCsvExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, destFileName);
exporter.exportReport();
reportName = destFileName;
break;
default:
LogUtils.errorf(this, "Error Running Report: Unknown Format: %s", format);
}
return reportName;
}