Yes. That is exactly the point i was trying to make erik.
> Date: Mon, 10 Aug 2009 14:30:59 +0200
> From: e.vanoos...@grons.nl
> To: users@wicket.apache.org
> Subject: Re: Output to input stream for streaming?
>
> That won't work. Servlets are synchronous; they don't expect anyone
> writing the output once the servlet finished.
>
> Regards,
> Erik.
>
>
> Russell Simpkins wrote:
> > Its not that anything is missing per se, but if you run your output writer
> > in a separate thread, then the rest of your processing is free to continue
> > and in your case I'm guessing that the processing has finished before your
> > output writing has completed. When your servlet finishes, the last thing
> > that happens is the output stream gets closed. Try doing the write outside
> > of a thread and see if you get the same exception.
> >
> > Russ
> >
> >
> >> Date: Mon, 10 Aug 2009 15:03:13 +0300
> >> Subject: Re: Output to input stream for streaming?
> >> From: martin.maku...@koodaripalvelut.com
> >> To: users@wicket.apache.org
> >>
> >> Well well.. I do not understand why it is not possible, in principle.
> >> The input is there. The output is there... what's missing?
> >>
> >> **
> >> Martin
> >>
> >> 2009/8/10 Russell Simpkins <russellsimpk...@hotmail.com>:
> >>
> >>> Martin,
> >>>
> >>> I don't think you can do this in a thread because that lets the
> >>> HttpServletResponse end and close your ServletOutputStream.
> >>>
> >>> Russ
> >>>
> >>>
> >>>> Date: Mon, 10 Aug 2009 14:49:58 +0300
> >>>> Subject: Output to input stream for streaming?
> >>>> From: martin.maku...@koodaripalvelut.com
> >>>> To: users@wicket.apache.org
> >>>>
> >>>> Hi!
> >>>>
> >>>> I have a HSSF document which can be written to an output stream.
> >>>> However, I want to stream it to the website visitor, which requires an
> >>>> inputstream... I have tried the following, but it somehow doesn't seem
> >>>> to work.
> >>>>
> >>>> Anybody know what can be done to fix it?
> >>>>
> >>>> final PipedInputStream inputStream = new PipedInputStream();
> >>>> final PipedOutputStream out;
> >>>> try {
> >>>> out = new PipedOutputStream(inputStream);
> >>>> } catch (IOException e) {
> >>>> throw new RuntimeException(e);
> >>>> }
> >>>> Executors.newSingleThreadExecutor().execute(new Runnable() {
> >>>> @Override
> >>>> public void run() {
> >>>> try {
> >>>> wb.write(out);
> >>>> } catch (IOException e) {
> >>>> MarkupUtils.handleUnexpectedException(e);
> >>>> }
> >>>> }
> >>>> });
> >>>>
> >>>> IResourceStream resourceStream = new IResourceStream() {
> >>>> /**
> >>>> * @see org.apache.wicket.util.resource.IResourceStream#close()
> >>>> */
> >>>> public void close() throws IOException {
> >>>> inputStream.close();
> >>>> }
> >>>>
> >>>> /**
> >>>> * @see
> >>>> org.apache.wicket.util.resource.IResourceStream#getContentType()
> >>>> */
> >>>> public String getContentType() {
> >>>> return getAlternateContentType();
> >>>> }
> >>>>
> >>>> /**
> >>>> * @see
> >>>> org.apache.wicket.util.resource.IResourceStream#getInputStream()
> >>>> */
> >>>> public InputStream getInputStream()
> >>>> throws ResourceStreamNotFoundException {
> >>>> return inputStream;
> >>>> }
> >>>>
> >>>> /**
> >>>> * @see org.apache.wicket.util.resource.IResourceStream#getLocale()
> >>>> */
> >>>> public Locale getLocale() {
> >>>> throw new IllegalAccessError("Method not implemented.");
> >>>> }
> >>>>
> >>>> /**
> >>>> * @see org.apache.wicket.util.resource.IResourceStream#length()
> >>>> */
> >>>> public long length() {
> >>>> try {
> >>>> return inputStream.available();
> >>>> } catch (IOException e) {
> >>>> MarkupUtils.handleUnexpectedException(e);
> >>>> }
> >>>> return 0;
> >>>> }
> >>>>
> >>>> /**
> >>>> * @see
> >>>> org.apache.wicket.util.resource.IResourceStream#setLocale(java.util.Locale)
> >>>> */
> >>>> public void setLocale(Locale locale) {
> >>>> throw new IllegalAccessError("Method not implemented.");
> >>>> }
> >>>>
> >>>> /**
> >>>> * @see org.apache.wicket.util.watch.IModifiable#lastModifiedTime()
> >>>> */
> >>>> public Time lastModifiedTime() {
> >>>> return
> >>>> Time.milliseconds(DatabaseServices.getCurrentTimestamp().getTime());
> >>>> }
> >>>>
> >>>> };
> >>>>
> >>>> java.io.IOException: Pipe closed
> >>>> at java.io.PipedInputStream.checkStateForReceive(Unknown Source)
> >>>> at java.io.PipedInputStream.receive(Unknown Source)
> >>>> at java.io.PipedOutputStream.write(Unknown Source)
> >>>> at java.io.OutputStream.write(Unknown Source)
> >>>> at
> >>>> org.apache.poi.poifs.storage.BigBlock.doWriteData(BigBlock.java:55)
> >>>> at
> >>>> org.apache.poi.poifs.storage.DocumentBlock.writeData(DocumentBlock.java:220)
> >>>> at
> >>>> org.apache.poi.poifs.storage.BigBlock.writeBlocks(BigBlock.java:86)
> >>>> at
> >>>> org.apache.poi.poifs.filesystem.POIFSDocument$BigBlockStore.writeBlocks(POIFSDocument.java:603)
> >>>> at
> >>>> org.apache.poi.poifs.filesystem.POIFSDocument.writeBlocks(POIFSDocument.java:275)
> >>>> at
> >>>> org.apache.poi.poifs.filesystem.POIFSFileSystem.writeFilesystem(POIFSFileSystem.java:390)
> >>>> at
> >>>> org.apache.poi.hssf.usermodel.HSSFWorkbook.write(HSSFWorkbook.java:1168)
> >>>>
> >>>>
> >>>>
> >>>> **
> >>>> Martin
> >>>>
> >>>>
> >>>>
>
> --
> Erik van Oosten
> http://day-to-day-stuff.blogspot.com/
>
>
>
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