Combining two Jasper reports

Question

I have a web application with a dropdown from where user could select the type of report viz. report1, report2, report3, etc.

Based on the report selected, a Jasper

Answer 1

Here is my code which i use on grails code as well as java.Its gives me two different report in one pdf.

String reportDir = Util.getReportDirectory() // my report directory
Map reportParams = new LinkedHashMap()
Map reportParams1 = new LinkedHashMap()

String outputReportName="Test_Output_copy"

reportParams.put('parameter name',"parameter")
reportParams1.put('copy',"Customer's Copy")

JasperReportDef reportDef1 = new JasperReportDef(name: 'testBillReport.jasper', fileFormat: JasperExportFormat.PDF_FORMAT,
            parameters: reportParams, folder: reportDir)
JasperReportDef reportDef2 = new JasperReportDef(name: 'testBillReport.jasper', fileFormat: JasperExportFormat.PDF_FORMAT,
            parameters: reportParams1, folder: reportDir)

List jasperPrintList = new ArrayList();
    jasperPrintList.add(reportDef1);
    jasperPrintList.add(reportDef2);

ByteArrayOutputStream report1 = jasperService.generateReport(jasperPrintList);
    response.setHeader("Content-disposition", "inline;filename="+outputReportName+'.pdf')
    response.contentType = "application/pdf"
    response.outputStream << report1.toByteArray()