How to run chartExample.jasper in webapp

[aziziyazit]

Hello guys!

I am in the urgent situation here. I have designed and compile my chartExample.jrxml to chartExample.jasper.

However when I run the jasper through my webapp it just display a blank/empty pdf file.

- I can display the *.txt, *.rtf and *.pdf however when run chartExample that contain chart, it appeared blank.

 

Azizi Yazit

Code:

...else if(formBean.getFmt().equals("chartP")){                    response.setContentType("application/pdf");                    response.addHeader("Content-disposition", "attachment; filename=" + filename.toString() + ".pdf");                                       try{                        JasperReport jasperReport =       (JasperReport)JRLoader.loadObject(getClass().getClassLoader().getResourceAsStream(reportName));                        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, HibernateUtil.currentSession().connection());                                               JasperExportManager.exportReportToPdfStream(jasperPrint, response.getOutputStream());                    }                    catch (JRException e)                    {                      e.printStackTrace();                    }                }

[lucianc]

aziziyazit
Wrote:

Anything in the server logs?

Regards,

Lucian

 

[aziziyazit]

@Lucian

 

Thanks for the quick reply. My problem has been solved. It appeared blank because wrong input in parameter inside iReport.

 

If I am wrong, please correct me. If report appear blank it's because wrong user input or input from user is not suit with query?

 

I have do googling a lots, and I found that, if we want generate a chart image, we better use JFreeChart through java code. And if we want report contains chart, we can use jasper report through iReport.

 

Azizi Yazit.

[lucianc]

aziziyazit
Wrote:

If report appear blank it's because wrong user input or input from user is not suit with query?

Yes, if the report query doesn't return any data the report would be by default blank.

Regards,

Lucian