Jasper Report print directly to physical printer (Jasper report 6.3.x API)

PrintToPrinterDirectWithJasper.groovy

import net.sf.jasperreports.engine.data.JRXmlDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.JasperPrintManager;
import net.sf.jasperreports.engine.query.JRXPathQueryExecuterFactory;
import java.awt.print.PrinterJob;
import javax.print.attribute.HashPrintRequestAttributeSet
import javax.print.attribute.PrintRequestAttributeSet
import javax.print.attribute.HashPrintServiceAttributeSet
import javax.print.attribute.PrintServiceAttributeSet
import javax.print.attribute.standard.PrinterName
import javax.print.attribute.standard.MediaSizeName
import net.sf.jasperreports.engine.export.JRPrintServiceExporter
import net.sf.jasperreports.engine.JRExporterParameter
import net.sf.jasperreports.engine.export.JRPrintServiceExporterParameter
import net.sf.jasperreports.export.SimpleExporterInput
import net.sf.jasperreports.export.SimplePrintServiceExporterConfiguration
import net.sf.jasperreports.engine.JRReport
import javax.print.attribute.standard.OrientationRequested

//Lets say we get connection from Grails sessionFactory :)
def connection = sessionFactory.currentSession.connection()
Map reportParameters = new HashMap();
reportParameters.put("parameterName1", "report parameters value 1");
reportParameters.put("parameterName2", "report parameters value 2");
JasperPrint jasperPrint = JasperFillManager.fillReport("REPORT.jasper").getFile().toString(), parameters,connection);

//Get the printers job and names
PrinterJob printerJob = PrinterJob.getPrinterJob();
PrintService[] services = PrintServiceLookup.lookupPrintServices(null, null);

//Lets set the printer name based on the registered printers driver name
String selectedPrinter = "CANON PIXMA 123"
System.out.println("Number of print services: " + services.length);
PrintService selectedService = null;

//Set the printing settings
PrintRequestAttributeSet printRequestAttributeSet = new HashPrintRequestAttributeSet();
printRequestAttributeSet.add(MediaSizeName.ISO_A4);
if (jasperPrint.getOrientationValue() == net.sf.jasperreports.engine.type.OrientationEnum.LANDSCAPE) { 
  printRequestAttributeSet.add(OrientationRequested.LANDSCAPE); 
} else { 
  printRequestAttributeSet.add(OrientationRequested.PORTRAIT); 
} 
PrintServiceAttributeSet printServiceAttributeSet = new HashPrintServiceAttributeSet();
printServiceAttributeSet.add(new PrinterName(selectedPrinter, null));

JRPrintServiceExporter exporter = new JRPrintServiceExporter();
SimplePrintServiceExporterConfiguration configuration = new SimplePrintServiceExporterConfiguration();
configuration.setPrintRequestAttributeSet(printRequestAttributeSet);
configuration.setPrintServiceAttributeSet(printServiceAttributeSet);
configuration.setDisplayPageDialog(false);
configuration.setDisplayPrintDialog(false);

exporter.setExporterInput(new SimpleExporterInput(jasperPrint))
exporter.setConfiguration(configuration);

//Iterate through available printer, and once matched with our CANON PIXMA, go ahead and print!
if(services.length != 0 || services != null){
  for(PrintService service : services){
      String existingPrinter = service.getName()
      if(existingPrinter.equals(selectedPrinter))
      {
          selectedService = service;
          break;
      }
  }
}
if(selectedService != null)
{	
  try{
      //Lets the printer do its magic!
      exporter.exportReport();
  }catch(e){
    //IF something goes wrong with the printer, lets just print it as PDF?
    JasperExportManager.exportReportToPdfFile(jasperPrint, "C:\\FAILFOLDER\\damnit-fail-to-print.pdf");
    e.printStackTrace()
    return 
  }
}else{
  //IF you did not set the printer, lets just print it as PDF?
  JasperExportManager.exportReportToPdfFile(jasperPrint, "C:\\FAILFOLDER\\damnit-fail-to-print.pdf");
  return 
}