I use jasper report plugin in grails 2.2.4 to generate PDF file. My code for the controller :
import org.codehaus.groovy.grails.plugins.jasper.JasperExportFormat
import org.codehaus.groovy.grails.plugins.jasper.JasperReportDef
class LabController {
def jasperService
def directpdf() {
def reportDef = new JasperReportDef(name:'mbarang.jrxml', fileFormat:JasperExportFormat.PDF_FORMAT)
response.contentType = 'application/pdf'
response.outputStream << jasperService.generateReport(reportDef).toByteArray()
return(false);
}
}
Those code is working properly in grails 2.2.4. But when I run at grails 2.4.2 I got this error :
Error 500: Internal Server Error
Message
getOutputStream() has already been called for this response
why I got this error?
I change the way to send the byteArray I use the render method, so it's become :
render(file: jasperService.generateReport(reportDef).toByteArray(), contentType: 'application/pdf')
But I got another error :
Error 500: Internal Server Error Class java.lang.ClassNotFoundException Message org.apache.commons.collections.ReferenceMap
I think it's about the plugins issue, I think the jasper plugin is incompatible with grails 2.4.2. I decided to use the jasper library directly. Copy the required .jar to lib/ folder. I download this .jar :
commons-beanutils-1.9.2.jar commons-collections-3.2.jar commons-digester-2.1.jar commons-logging-1.2.jar itext-2.1.7.jar jasperreports-5.6.0.jar
Then change my controller become, something like this :
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.export.JRPdfExporter;
class LaporanController {
def printbarang() {
try {
String reportName = "c:/xampp/halo"
// compiles jrxml
JasperCompileManager.compileReportToFile(reportName + ".jrxml");
// fills compiled report with parameters and a connection
// JasperPrint print = JasperFillManager.fillReport(reportName + ".jasper", parameters, connection);
JasperPrint print = JasperFillManager.fillReport(reportName + ".jasper", null);
ByteArrayOutputStream pdfStream = new ByteArrayOutputStream();
// exports report to pdf
JRExporter exporter = new JRPdfExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);
// exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, new FileOutputStream(reportName + ".pdf")); // your output goes here
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, pdfStream); // your output goes here
exporter.exportReport();
} catch (Exception e) {
render('something when wrong')
throw new RuntimeException("It's not possible to generate the pdf report.", e);
} finally {
render(file: pdfStream.toByteArray(), contentType: 'application/pdf')
}
}
}
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