AW: Problems displaying a PDF from stream
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This refers to a version oft he page that is no longer valid after the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;
}
}
LinkT pdfLink = new LinkT(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 efile.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
AW: Problems displaying a PDF from stream
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
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AW: Problems displaying a PDF from stream
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;
}
}
LinkT pdfLink = new LinkT(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
efile.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
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
AW: Problems displaying a PDF from stream
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;
}
}
LinkT pdfLink = new LinkT(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 efile.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
