 | | | Subject: Excel, Struts and Downloading | Subject: Excel, Struts and Downloading 2007-05-27 - By Jon Wynacht
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Hi,
I used to run Struts 1.2.9, POI 2.5 and could generate Excel files
from a servlet and download them without issue. I recently upgraded
to Struts 1.3.5 and POI 3 and it looks like I broke that capability.
I'm getting the following error:
java.lang.IllegalStateException: getOutputStream() has already been
called for this response
I've searched through the Net and the archives here for info but
nothing really seems to fit for my situation; it's mostly JSP.
I'm calling an Action servlet which makes a call to the model and
gets some data, creates a new workbook and then does this:
<snip>
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition",
"attachment;filename=\"attendees.xls\"");
response.addHeader("Content-description", "Event
Attendees");
ServletOutputStream stream = response.getOutputStream
();
wb.write(stream);
stream.close();
...
forward = "SUCCESS";
...
return mapping.findForward(forward);
</snip>
It's what I did before I upgraded and things worked fine. Now they don't
Any ideas? Am I missing something really obvious or was I bending the
rules a bit and taking chances with my data in my previous config?
Cheers and thanks,
Jon
Jon Wynacht
jon@(protected)
http://www.objectevolution.com
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