Hello all,
I've searched around the forums attempting to discover a way to output a
file to the user. What I'm trying to do is after creating a pdf file with
JasperReports i'd like to output it to the user. I use Tapestry 4.02. It
looks like the old way was to do something like this...
Make a method like the following a a listener, such as from a DirectLink or
whatever.
(The Document is just a class that holds the file information you want to
send to the user.)
public void downloadAction(IRequestCycle cycle)
{
try
{
HttpServletResponse response =
cycle.getRequestContext().getResponse();
byte[] data = new byte[1024];
FileInputStream in = document.getFileInputstream();
response.setHeader("Content-disposition",
"inline; filename=" +
document.getFileName());
response.setContentType(document.getMimeType());
response.setContentLength(new Long(document.getSize()).intValue());
ServletOutputStream out = response.getOutputStream();
int bytesRead = 0;
while ((bytesRead = in.read(data)) > -1)
{
out.write(data, 0 , bytesRead);
}
in.close();
response.flushBuffer();
}
catch (IOException e)
{
e.printStackTrace();
}
}
Now it output's a pdf file correctly, and everything seems to work
fine, but looking at the log, i get serveral of these:
javax.servlet.ServletException: getOutputStream() has already been
called for this response
Apparently the new correct way is to create a service. Does anyone
have an example of outputing a file with a service?
Thank you very much for any assistance.
