JasperReports: How to call the report in jsp page

I made one jasper report using iRe开发者_StackOverflow中文版port 3.7.4 version, now i have to use that or call that report in my java application where i am using servlets, jsp and struts framework, apache tomcat as server.

I want steps regarding how to call the jasper report with some example.

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1. Compile the report in iReport
2. Place the compiled report on the classpath

3. load it with

   JasperReport jasperReport = (JasperReport) JRLoader.loadObject(inputStream);
   

4. Fill it with data. dataSource is the DataSource instance you have - for example a BeanCollectionDataSource

   JasperPrint jasperPrint = 
        JasperFillManager.fillReport(jasperReport, params, dataSource);
   

5. Export it

   JRPdfExporter exporter = new JRPdfExporter();
   exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outputStream);
   exporter.exportReport();
   

6. The outputStream above may be either a response.getOutputStream() or a FileOutputStream(), depending on whether you want to send it to a client or you want to store it as a file. If you want to send it to the client, you'd have to send the Content-Disposition header, and some more, but that depends on the format you want to save to. In case you want to print on the client, it's quite a different question - you'd need some client-side code, an applet, for example.

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After 6 years @Bozho answer now (v5 and v6) contains deprecated code on point 5 JRExporterParameter.OUTPUT_STREAM, but I will try to improve the other points while I'm at it

3. Load the report
   
   compiled version .jasper

   JasperReport jasperReport = (JasperReport) JRLoader.loadObject(inputStream);
   

   or the non compiled version .jrxml (slower since need to compile but feasible)

   JasperReport jasperReport = JasperCompileManager.compileReport("path/to/myReport.jrxml");
   

4. Fill the report
   
   with nothing (datasource generated inside report or just static text)

   JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params);
   

   with datasource:

   JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, dataSource);
   

   with database connection (may the most common, sql executed inside report)

   JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, connection);
   

5. Export report
   
   

   JRPdfExporter exporter = new JRPdfExporter()
   exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
   exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(outputStream));
   SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
   configuration.setMetadataAuthor("Petter"); //Set your pdf configurations, 
   exporter.setConfiguration(configuration);
   exporter.exportReport();
   

6. If you like to stream the report directly to web page this is how contentType and Content-disposition is set and how you retrieve the outputStream
   
   

   response.setContentType("application/x-pdf");
   response.setHeader("Content-disposition", "inline; filename=myReport.pdf");
   OutputStream outputStream = response.getOutputStream();
   

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This piece of code should give you some idea on how to do it

JasperReport jr=JasperCompileManager.compileReport("yourJRXMLFilePath");
JasperPrint jrPrint = JasperFillManager.fillReport(jr,mapWithParameters,aJRDataSource);
JasperExportManager.chooseYourFavoriteMethod(jrPrint,"destinationFile");

Otherwise, check the api The first line can be ommited if you had already compiled the file with iReport. Check the api for the correct method on JasperFillManager in this case.

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in the first answer, point 5: After

JRPdfExporter exporter= new JRPdfExporter();

add

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

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Best solution (For better performance as well), will be calling a compiled report.

you can see the example below

import java.io.IOException;
import java.util.HashMap;

import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;

public class PdfFromJasperFile {
  public static void main(String[] args) throws JRException, IOException {

    JasperPrint jasperPrint = JasperFillManager.fillReport("report.jasper",  new HashMap<String, Object>(), 
    new JREmptyDataSource());
    JasperExportManager.exportReportToPdfFile(jasperPrint, "sample.pdf");

  }
}

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This is a different way of doing the same.

    JasperReport jasperReport;
    JasperPrint jasperPrint;
    Map<String, Object> param = new HashMap<String, Object>();
    try{
        String sourceFileName = ".jrxml";
        jasperReport = JasperCompileManager.compileReport(sourceFileName);
        jasperPrint = JasperFillManager.fillReport(jasperReport,param,new JRBeanCollectionDataSource(getDetails()));
        JasperExportManager.exportReportToPdfFile(jasperPrint, ".pdf");
    }
    catch(Exception e){
    }