JasperReport ServletException

[Luciano A. Pozzo]

Hello....

I'm using jasper report for generate a pdf report. When I run the application on localhost (windows) the pdf is generated perfectly, but when I put on fedora I catch ServletException, when I invoke

byte[] relatorio = JasperRunManager.runReportToPdf(relatorioPath, labels, collection);

My code:

public class GeraRelatorio{

public static synchronized byte[] geraRelatorio(String relatorioPath, Collection dados, HashMap labels) throws Exception{
JRBeanCollectionDataSource collection = new JRBeanCollectionDataSource(dados);
byte[] relatorio = JasperRunManager.runReportToPdf(relatorioPath, labels, collection);
return relatorio;
}

}

and the Action (Struts)

public void geraRelatorio(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) {
ExameForm exameForm = (ExameForm)form;
try {
ExameBusinessDelegate exameBD = new ExameBusinessDelegate();

OutputStream out = response.getOutputStream();

String xml = "relatorio/exameRelatorio.jasper";
xml = getServlet().getServletContext().getRealPath(xml);

Collection c =  new ArrayList();

c = (exameBD.recuperaTodos(new ExameVO(), "descExa"));

byte[] relatorio = GeraRelatorio.geraRelatorio(xml,c, new HashMap());
response.setContentType("application/pdf");
response.setContentLength(relatorio.length);
out.write(relatorio, 0, relatorio.length);
out.flush();
out.close();

} catch (Exception e) {
e.printStackTrace();
}
}  

Thank's

[Luciano A. Pozzo]

hehehe... I solve!
The problem happen because the jasper have to access graphic interface's configurations, so they can't on Linux, because I'm using the terminal (server), so I should pass the command "-Djava.awt.headless=true" for jvm. Or you can put on JAVA_OPTS variable (jboss).