[英]How to merge two jrxml jasper reports into a one single pdf output file
[英]Jasper Reports: How to combine two report streams into one PDF output?
我有這段代碼只能根據給定條件一次只生成一份Jasper報告為PDF。 但是,如果我想將兩個Jaspers合並為一個PDF文件怎么辦? (即,PDF輸出應為LoadTagR2R.jasper + LoadTagR2RLandscape.jasper-這將是一個包含多頁的PDF輸出流)
if (fullHalfTag.equalsIgnoreCase("Y")){ //Read FULL_HALF_TAG value (if FULL_HALF_TAG == 'Y')
logger.debug("Printing FULL tag...");
reportStream = getServletConfig().getServletContext().getResourceAsStream("/reports/LoadTagR2RLandscape.jasper");
} else {
logger.debug("Printing HALF tag...");
reportStream = getServletConfig().getServletContext().getResourceAsStream("/reports/LoadTagR2R.jasper");
}
//Report parameters
Map parameters = new HashMap();
parameters.put("PLT_NO", pltNo);
parameters.put("TICKET_NO", ticketNo);
try {
Connection conn = ConnectionUtils.getConnection();
JasperRunManager.runReportToPdfStream(reportStream,servletOutputStream, parameters, conn);
response.setContentType("application/pdf");
servletOutputStream.flush();
servletOutputStream.close();
我嘗試合並兩個輸入流,如下所示,但是沒有用。 思考?
new java.io.SequenceInputStream(s1, s2).
這是執行此操作的舊方法:
JasperPrint jasperPrint1 = JasperFillManager.fillReport(reportStream1, parameters, conn);
JasperPrint jasperPrint2 = JasperFillManager.fillReport(reportStream2, parameters, conn);
List<JasperPrint> list = new ArrayList<JasperPrint>();
list.add(jasperPrint1);
list.add(jasperPrint2);
JRPdfExporter exporter = new JRPdfExporter();
exporter.setParameter(JRPdfExporterParameter.JASPER_PRINT_LIST, list);
exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM,servletOutputStream);
exporter.exportReport();
編輯:
在JasperReports 6.1.1中, 不建議使用 API JRPdfExporterParameter.JASPER_PRINT_LIST
和JRPdfExporterParameter.OUTPUT_STREAM
添加新方法。
更換:
exporter.setParameter(JRPdfExporterParameter.JASPER_PRINT_LIST, list);
exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM,servletOutputStream);
同
exporter.setExporterInput(SimpleExporterInput.getInstance(list));
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(servletOutputStream));
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