See here
http://cwiki.apache.org/WICKET/best-practices-and-gotchas.html#BestPracticesandGotchas-Startingdownloadafterformsubmission(Wicket1.1)
Federico Fanton wrote:
Hi everyone!
I have a form with some fields and a submit button which says "Save and print".
The button has setDefaultFormProcessing(false), and overrides onSubmit so that the form
model object is sent to the persistence layer and printed immediately afterwards. The
persistence layer *may* alter the object, so I have to reload it. My problem is that this
reloading causes a "page expired" when I press the button for a second time.
My onSubmit:
if(getForm().process()){
MyBean data=getForm().getModelObject();
data=Persistence.save(data);
// Create PDF and send it to the browser
IResourceStream s = new ByteArrayResource("application/pdf",
buildPDF(data)).getResourceStream();
RequestCycle.get().setRequestTarget( new ResourceStreamRequestTarget(s) );
getForm().setModelObject(data);
}
I think the page expires because sending the PDF to the browser "blocks" the
request cycle, so the browser never renders the new version of the page.. Is there a way
to do this? Am I doing Something Wrong? ^__^;
Many thanks for your time!
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Andrew Klochkov
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