Thank you very much Stefan, it works perfectly!
2010/10/29 Stefan Lindner <lind...@visionet.de>
> How does your trigger look like? I mean the <a> or <button> or <input
> type="submit"> element? Does it trigger a page refresh, means does it start
> a request tot he server? Then you still have a problem with cleared session
> cookie.
> You need something like <div
> onclick="openURL(bookmarkableURLWithParameters)"/> or more in detail
>
>
> <div onclick=" window.open('http://url.to.servlet.domain', '',
> 'scrollbars=yes,location=no,menuBar=no,resizable=yes,status=no,toolbar=no')
> "/>
>
> No request cycle is triggered, the page stays untouched you can clear the
> session cookie as often as you like
>
> I did not proof this but I thin this could be te right way.
>
> Stefan
>
> -----Ursprüngliche Nachricht-----
> Von: Alex Zeit [mailto:zeita...@googlemail.com]
> Gesendet: Freitag, 29. Oktober 2010 14:22
> An: users@wicket.apache.org
> Betreff: Re: Problems displaying a PDF from stream
>
> I mean going to menu "Clear private data" (in German version it is "Neueste
> Chronik löschen"). Yes Cookies are also removed.
> For now I implemented my PDF generator as separate Servlet but it has same
> behaviour unless I disable caching:
> // Set to expire far in the past.
> response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");
> if(request.getHeader("User-Agent").contains("MSIE")){
> // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
> response.addHeader("Cache-Control", "post-check=0,
> pre-check=0");
> }else{
> // Set standard HTTP/1.1 no-cache headers.
> // 29.10.10 OE Not working with IE 7
> response.setHeader("Cache-Control", "no-store, no-cache,
> must-revalidate");
> }
> // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
> response.addHeader("Cache-Control", "post-check=0, pre-check=0");
> // Set standard HTTP/1.0 no-cache header.
> response.setHeader("Pragma", "no-cache");
>
> I don't really like this workaround with checking User agnet. But it is
> only way to make it work properly with Firefox and IE.
>
>
> 2010/10/28 Stefan Lindner <lind...@visionet.de>
>
> > What do you mean with "After clearing chronik"? Does this mean that
> > the session cookie is lost after "After clearing chronik"?
> > You may take a look at the generated HTML:
> >
> >
> >
>
> Onclick=".....?wicket:interface=:5:.............:pdfIcon:pdf::ILinkListener::"
> >
> > This refers to a version oft he page that is no longer valid after the
> > session is lost. Refreshing the page starts a new session and it works
> > again.
> > You must (I don't know how at the moment) produce a sort of
> > bookemarkable url for this case I think. My guess would be to use a
> > separate servlet for this.
> >
> > Stefan
> >
> > -----Ursprüngliche Nachricht-----
> > Von: Alex Zeit [mailto:zeita...@googlemail.com]
> > Gesendet: Donnerstag, 28. Oktober 2010 18:21
> > An: users@wicket.apache.org
> > Betreff: Re: Problems displaying a PDF from stream
> >
> > Now it works with IE and this is most important thing. Thank you very
> much!
> > However the problem with Firefox remains. After clearing chronik while
> > Pdf document is open if I click the link comes "page expired", after
> > refreshing the main page with link if I click link again comes empty
> page.
> >
> > 2010/10/28 Alex Zeit <zeita...@googlemail.com>
> >
> > > Thanks a lot Stefan I will try it right now
> > >
> > >
> > > 2010/10/28 Stefan Lindner <lind...@visionet.de>
> > >
> > >> Try this:
> > >>
> > >>
> > >>
> > >> public class MyResourceStreamWriter extends
> > >> AbstractResourceStreamWriter {
> > >> private static final long serialVersionUID = 1L;
> > >>
> > >> public MyResourceStreamWriter() {
> > >> }
> > >>
> > >> @Override
> > >> public void write(final OutputStream output) {
> > >> // !!!!! prduce output here and stream it to
> > output
> > >> try {
> > >> output.flush();
> > >> } catch (Exception e) {
> > >> e.printStackTrace();
> > >> }
> > >> }
> > >>
> > >> @Override
> > >> public String getContentType() {
> > >> return "application/pdf";
> > >> }
> > >> }
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> Link<T> pdfLink = new Link<T>("pdf") {
> > >> private static final long serialVersionUID = 1L;
> > >> @Override
> > >> public void onClick() {
> > >> ResourceStreamRequestTarget rsrt = new
> > >> ResourceStreamRequestTarget(new MyResourceStreamWriter());
> > >> //rsrt.setFileName("file.pdf"); // use this
> > >> if yout want your browser to ask you wheter you want to save the
> > >> cownloaded PDF in fil e"file.pdf"
> > >> getRequestCycle().setRequestTarget(rsrt);
> > >> }
> > >> };
> > >>
> > >>
> > >> pdfLink.setPopupSettings(new
> > >> PopupSettings(PopupSettings.RESIZABLE
> > >> | PopupSettings.SCROLLBARS));
> > >> add(pdfLink);
> > >>
> > >>
> > >> Stefan
> > >>
> > >>
> > >> -----Ursprüngliche Nachricht-----
> > >> Von: Alex Zeit [mailto:zeita...@googlemail.com]
> > >> Gesendet: Donnerstag, 28. Oktober 2010 15:21
> > >> An: users@wicket.apache.org
> > >> Betreff: Re: Problems displaying a PDF from stream
> > >>
> > >> Yes
> > >>
> > >> 2010/10/28 Stefan Lindner <lind...@visionet.de>
> > >>
> > >> > Do you want to open the PDF in a separate window? Klick on some
> > >> > button and open a new browser window with pdf?
> > >> >
> > >> > Stefan
> > >> >
> > >> > -----Ursprüngliche Nachricht-----
> > >> > Von: Alex Zeit [mailto:zeita...@googlemail.com]
> > >> > Gesendet: Donnerstag, 28. Oktober 2010 15:14
> > >> > An: users@wicket.apache.org
> > >> > Betreff: Problems displaying a PDF from stream
> > >> >
> > >> > While trying to display a PDF document from stream following
> > >> > problems
> > >> > arrise:
> > >> > IE7:
> > >> > Resource can not be displaied at all.
> > >> >
> > >> > Firefox 3.6.12:
> > >> > PDF is displaied but if Chronk is cleared in Firefox while
> > >> > document is open then it cannot be displaied again. It is
> > >> > possible only after restarting Firefox.
> > >> >
> > >> > No errors in log.
> > >> >
> > >> > The code:
> > >> > public class PdfGen extends WebResource {
> > >> >
> > >> > public PdfGen() {
> > >> > setCacheable(false);
> > >> > }
> > >> >
> > >> > @Override
> > >> > public IResourceStream getResourceStream() {
> > >> > IResourceStream resourceStream = new
> > >> > AbstractResourceStreamWriter() {
> > >> > private static final long serialVersionUID =
> > >> > 1934248394380163944L;
> > >> > public void write(OutputStream output) {
> > >> > testItextDirect(output);
> > >> > }
> > >> > public String getContentType() {
> > >> > return "application/pdf";
> > >> > }
> > >> > };
> > >> > return resourceStream;
> > >> > }
> > >> >
> > >> > private void testItextDirect(OutputStream output){
> > >> > try {
> > >> > Document document = new Document();
> > >> > PdfWriter.getInstance(document, output);
> > >> > document.open();
> > >> > document.add(new Paragraph("Hello World"));
> > >> > document.add(new Paragraph(new Date().toString()));
> > >> > document.close();
> > >> > } catch (DocumentException de) {
> > >> > try {
> > >> > throw new IOException(de.getMessage());
> > >> > } catch (IOException e) {
> > >> > e.printStackTrace();
> > >> > }
> > >> > }
> > >> > }
> > >> > }
> > >> >
> > >> >
> > >> > in the init() of AuthenticatedWebApplication SharedResource added
> > >> > like
> > >> > this:
> > >> > getSharedResources().add("pdfGen", new PdfGen());
> > >> >
> > >> > Any help would be highly appreciated Alex
> > >> >
> > >> > -----------------------------------------------------------------
> > >> > --
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> > >> > For additional commands, e-mail: users-h...@wicket.apache.org
> > >> >
> > >> >
> > >>
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> > >>
> > >>
> > >
> >
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> >
> >
>
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