Export JasperReport to PDF OutputStream?

I'm writing a pretty simple sample project for familiarizing myself with Jasper Reports. I'd like to export a report I've configured to a PDF OutputStream , but there's no factory method for it:

InputStream template = JasperReportsApplication.class .getResourceAsStream("/sampleReport.xml"); JasperReport report = JasperCompileManager.compileReport(template); JasperFillManager.fillReport(report, new HashMap()); // nope, just chuck testa. //JasperExportManager.exportReportToPdfStream(report, new FileOutputStream(new File("/tmp/out.pdf"))); 

3 Answers 3

Ok, so here's how it works; JasperFillManager actually returns a JasperPrint object, so:

// get the JRXML template as a stream InputStream template = JasperReportsApplication.class .getResourceAsStream("/sampleReport.xml"); // compile the report from the stream JasperReport report = JasperCompileManager.compileReport(template); // fill out the report into a print object, ready for export. JasperPrint print = JasperFillManager.fillReport(report, new HashMap()); // export it! File pdf = File.createTempFile("output.", ".pdf"); JasperExportManager.exportReportToPdfStream(print, new FileOutputStream(pdf)); 

If you're simply trying to output report into a file, you can use exportReportToPdfFile without handling outputstream by yourself

Right, but this way gives me the most flexibility; I can write the output stream to a file or across the network or anywhere I want :)

Note that compiling is usually a superfluous step. Instead, software should fill out the report using the .jasper file, rather than re-compiling the .jrxml file every time.