Some Seam and JasperReports related questions

[drapierwim]

I'm trying out jasperreports(for the first time...) and I must say it's not easy to find some good documentation, to leave that aside I have some problem where I could use some help.

1, Is it possible to inject the 'ServletContext' if so how can this be done? This is needed to load my compiled report.

File reportFile = new File(servletContext.getRealPath("/reports/classic.jasper"));

2. When the report is generated I have an byte arry, since seam components will have a string as return value I will never get to see my report. So this will have to be an JSF Managedbean or are there other ways to deal with that.

byte[] pdf = JasperExportManager.exportReportToPdf(jasperPrint);

[drapierwim]

2. When the report is generated I have an byte arry, since seam components will have a string as return value I will never get to see my report. So this will have to be an JSF Managedbean or are there other ways to deal with that.

Ok, I hate myself for doing that but you can ignore the second question,
to solve it i can just Outject it into some relevant context and the case is closed.

Sometimes I can write miles and miles of code, stop and think for a while and ending up in rewriting it in a few lines... stupid isn't it.

[gavin.king]

You should be able to get the ServletContext by navigating (and typecasting) from the FacesContext. But I think I'll add a feature to allow the ServletContext to be easily injected. I guess the same goes for HttpSession and HttpRequest....

[drapierwim]

Are these the same?

ServletContext servletContext = (ServletContext) javax.faces.context.FacesContext.getCurrentInstance().getExternalContext().getContext();

and the @injected seam version

@In
private FacesContext facesContext;
...
ServletContext servletContext = (ServletContext) facesContext.getContext().getExternalContext().getContext();

[gavin.king]

yes, the are the same

[drapierwim]

I've managed to generate my report as a byte[], but here comes the
problem I don't have a clue on how and where to place my byte[]

This is what I found on a jasper report presentation from
JBoss World 2005, how should I get a reference to the responce object
in my SFSB or are there other and better ways to solve this.

response.setContentType("appliction/pdf");
response.setContentLength(bytes.length);

[patrick_ibg]

You can get to the HttpResponse object via the external web-context via the FacesContext.

[manuel.gentile]

Sure! But if i write

response.setHeader("Content-disposition",
"attachment; filename=report.pdf" );
response.setContentType("appliction/pdf");
response.setContentLength(pdf.length);
ServletOutputStream ouputStream = response.getOutputStream();
ouputStream.write(pdf, 0, pdf.length);
ouputStream.flush();
ouputStream.close();
facesContext.responseComplete();

i break Seam and at the next operation i have an Exception!!!


if i don't write facesContext.responseComplete(); the Seam works but i have the bytes in the response as char....

Any solution?