HttpServletResponse inherits the getOutputStream() method from
ServletResponse.
Peter Goode wrote:
>
> Hi,
>
> I've been trying to get an uploaded file to be sent back...
>
> PROBLEM:
> I can't get binary access to the output stream (from within subclass of
> RawScreen).
>
> I'm using the code below which is reproduced around various Turbine
> sites&mailing lists.
> However, .getOutputStream() doesn't actually exist, according to all
> documentation, and indeed
> it fails to work (although I've not got any debugging, just
> comment/uncomment and see what lives !)
>
> Is anything wrong with this..? (well yes) and why does everyone claim to
> use .getOutputStream() when it doesn't
> exist... ?
>
> If it can be made to work then the Tutorial should be updated, because
> there is no working download file
> in there at present.
>
> Cheers for your help
>
> Peter
>
> /*------/// code starts ///---------*/
>
> public class Download extends RawScreen
> {
> public void doOutput(RunData data) throws Exception
> {
> if (!isAuthorized(data))
> {
> // do something to tell the user they don't have permission
> }
> else
> {
> data.declareDirectResponse();
> FileInputStream file_tosend = new
> FileInputStream(TurbineServlet.getRealPath("/uploaded.file"));
> BufferedInputStream buffer_data = new
> BufferedInputStream(file_tosend);
> // OK to here
>
> // these 3 would kill it
> //OutputStream stream_out =
> data.getResponse().getOutputStream();
> //BufferedOutputStream buffer_out = new
> BufferedOutputStream(stream_out);
> //buffer_out.write(buffer_data.read());
>
> // *** *** this one kills it, when enabled *** ***
> //OutputStream a = data.getResponse().getOutputStream();
>
> // Will work and do all this, provided the
> .getOutputStream() call isn't made YYY
> // Documentation for RunData.getResponse() -->
> javax.servlet.http.HttpServletResponse
> // shows that there is no .getOutputStream() method... what
> should be going on !?
> String str = "test 9D";
> PrintWriter out = data.getOut();
> out.println(str);
> out.flush();
> file_tosend.close();
> }
> }
>
> public String getContentType(RunData data)
> {
> return "text/html";
> //return "image/jpeg";
> }
>
> protected boolean isAuthorized(RunData data)
> {
> // do the security check here. Get whatever info you need
> // about the user from RunData
> return true;
> }
> }
> /*------/// ends ///---------*/
>
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