How to view generated PDF from JapserReport to Primefaces Media Component? - primefaces

Question

I have the following Method that generates My PDF from Jasper as byte[].
#Named
#ViewScoped
public class ReportingBean extends BasicBean {
...
public void generateUebersichtMaterial() throws FileNotFoundException {
InputStream pathMaster_jrxml;
InputStream pathSubReport_jrxml;
pathMaster_jrxml = getClass().getResourceAsStream("/reports/mainreport.jrxml");
pathSubReport_jrxml = getClass().getResourceAsStream("/reports/subreport.jrxml");
try {
getConnection();
HashMap<String, Object> params = new HashMap<>();
List<ReportMaterialUebersicht> list = new ArrayList<>();
list = reportFacade.getReportMaterialUebersicht();
JasperReport subreport = JasperCompileManager.compileReport(pathSubReport_jrxml);
JasperReport report = JasperCompileManager.compileReport(pathMaster_jrxml);
params.put(JRParameter.REPORT_LOCALE, Locale.FRENCH);
params.put("subReport", subreport);
JasperPrint jasperPrint = JasperFillManager.fillReport(report, params,
new JRBeanArrayDataSource(list.toArray()));
connection.close();
content = JasperExportManager.exportReportToPdf(jasperPrint);
Faces.sendFile(content, "Materialuebersicht.pdf", false);
} catch (Exception e) {
Logger.getLogger(ReportingBean.class.getName()).log(Level.SEVERE, null, e);
}
}
...
}
Instead of open the PDF in a new window I want to use the primefaces media component like:
<p:media value="#{reportingBean.myPDF}" width="100%" height="100%" player="pdf" />
How can this be done?

Answer 1

I´ve tried it out, and I found out the solution by myself by using the StreamedContent from Primefaces.
Added these two lines to the ReportBean:
InputStream in = new ByteArrayInputStream(content);
myDoc = new DefaultStreamedContent(in, "application/pdf", "test.pdf");
In the PostConstruct of the Bean I initilize the variable myPDF and call it from the media component.
<p:media value="#{reportingBean.myPDF}" width="100%" height="100%" player="pdf" />
Here is the full Bean example:
The ReportingBean:
#Named
#ViewScoped
public class ReportingBean extends BasicBean {
...
private DefaultStreamedContent myPDF;
public void generateUebersichtMaterial() throws FileNotFoundException {
InputStream pathMaster_jrxml;
InputStream pathSubReport_jrxml;
pathMaster_jrxml = getClass().getResourceAsStream("/reports/mainreport.jrxml");
pathSubReport_jrxml = getClass().getResourceAsStream("/reports/subreport.jrxml");
try {
getConnection();
HashMap<String, Object> params = new HashMap<>();
List<ReportMaterialUebersicht> list = new ArrayList<>();
list = reportFacade.getReportMaterialUebersicht();
JasperReport subreport = JasperCompileManager.compileReport(pathSubReport_jrxml);
JasperReport report = JasperCompileManager.compileReport(pathMaster_jrxml);
params.put(JRParameter.REPORT_LOCALE, Locale.FRENCH);
params.put("subReport", subreport);
JasperPrint jasperPrint = JasperFillManager.fillReport(report, params,
new JRBeanArrayDataSource(list.toArray()));
connection.close();
content = JasperExportManager.exportReportToPdf(jasperPrint);
Faces.sendFile(content, "Materialuebersicht.pdf", false);
} catch (Exception e) {
Logger.getLogger(ReportingBean.class.getName()).log(Level.SEVERE, null, e);
}
}
...
#PostConstruct
private void init() {
try {
materialUebersichtPDF = generateUebersichtMaterial();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}