Download PDF JasperReport com JSF.java

private JasperPrint jasperPrint;
	
public void init() throws JRException{
  JRBeanCollectionDataSource data = new JRBeanCollectionDataSource(listOfUser);
  String reportPath = FacesContext.getCurrentInstance().getExternalContext().getRealPath(“report.jasper”);
  jasperPrint = JasperFillManager.fillReport(reportPath, new HashMap<>(), data);
}

public void PDF() throws JRException, IOException{
  init();
	
  HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
  response.reset();
  response.setContentType("application/pdf");
  response.setHeader("Content-disposition", "attachment; filename=\"report.pdf\"");
  ServletOutputStream stream = response.getOutputStream();
  JasperExportManager.exportReportToPdfStream(jasperPrint, stream);
  FacesContext.getCurrentInstance().responseComplete();
  
}