jasperreports实现一个多页报表

JasperPrint jasperPrint = JasperFillManager.fillReport(filePath1, parameters1, jsource1);
JasperPrint jasperPrint2 = JasperFillManager.fillReport(filePath2, parameters2, jsource2);

List jasperPrintList = new ArrayList();
jasperPrintList.add(jasperPrint);
jasperPrintList.add(jasperPrint2);

ByteArrayOutputStream baos = new ByteArrayOutputStream();
JRPdfExporter exporter = new JRPdfExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT_LIST,

jasperPrintList);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, baos);
exporter.exportReport();
byte[] outputFile1= baos.toByteArray();