Using jasper reports with play framework

BaseJasperReport.java

package lib.reports;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.export.JExcelApiExporter;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperCompileManager;

public class BaseJasperReport {
  //here should be jrxml and jasper files, 
  //you can generate them with iReports(I'm using netbeans plugin)
  // http://jasperforge.org/projects/ireport 
  static String REPORT_DEFINITION_PATH = "./app/reports/";

  public static InputStream generateReport(String reportDefFile, Map reportParams) {
    OutputStream os = new ByteArrayOutputStream();
    try {
      String compiledFile = REPORT_DEFINITION_PATH + reportDefFile + ".jasper";
      JasperCompileManager.compileReportToFile(REPORT_DEFINITION_PATH + reportDefFile + ".jrxml", compiledFile);
      JasperPrint jrprint = JasperFillManager.fillReport(compiledFile, reportParams, play.db.DB.getConnection());
      JRExporter exporter = new JExcelApiExporter();
      exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, os);
      exporter.setParameter(JRExporterParameter.JASPER_PRINT, jrprint);
      exporter.exportReport();
    } catch (Exception e) {
      e.printStackTrace();
    }
    return new ByteArrayInputStream(((ByteArrayOutputStream) os).toByteArray());
  }
}

dependencies.yml

require:
    - play
    - net.sf.jasperreports -> jasperreports 4.0.1:
         transitive: false
    - commons-digester -> commons-digester 1.7:
         transitive: false
    - com.lowagie -> itext 2.1.7:
         transitive: false
    - net.sourceforge.jexcelapi -> jxl 2.6.10:
         transitive: false

SomeController.java

package controllers;

import play.*;
import play.mvc.*;
import java.util.Map;
import java.util.HashMap;

import models.*;
import controllers.*;

public class SomeController extends extends Base {

  public static void download_report() {
    Map reportParams = new HashMap();
    //jrxml and jasper files should be in app/reports
    renderBinary(lib.reports.BaseJasperReport.generateReport("SomeReport", reportParams), "some_report.xls");
  }
}

hallo friend :D
i follow your guide to make report using jasper...
and its work very well when development process..
but i have some problem when production, when i convert project to binary using "play dist"
there is an error "java.io.FileNotFoundException: ./app/report/CustomerListing.jasper"
so where the best path to put the jasper file?

thanks

Hi,
Could you tell me please the folder of each file 👍
1- BaseJasperReport.java : I put it in the app\models
2- dependencies.yml : in the \conf
3- SomeController.java : I have no idea !

Could you please send to us the project folder with buttons which launch .JRXML FILE etc...PLEASE, I'm new on PLAY.

Thank you in advance.

please.