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 This refers to a version oft he page that is no longer valid after the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
> >> >
> >> > -----------------------------------------------------------------
> >> > --
> >> > -- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> >> > For additional commands, e-mail: users-h...@wicket.apache.org
> >> >
> >> >
> >>
> >> -------------------------------------------------------------------
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> >> For additional commands, e-mail: users-h...@wicket.apache.org
> >>
> >>
> >
>
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