Martin, I'm looking into mounting the resource but there is something that I don't understand. Currently I am creating the resource in my panel and passing the pdf I want to display into the constructor of the resource. If I mount the resource, how do I provide it with the dynamically generated pdf? I don't even see a way of getting a hold of the resourceReference object created and mounted in the WebApplication init() method. Perhaps I need to also register it as an application-shared resource, then access it in my panel constructor and add the pdf there?
Bruce -----Original Message----- From: Martin Grigorov [mailto:mgrigo...@apache.org] Sent: Friday, March 13, 2015 12:53 PM To: users@wicket.apache.org Subject: Re: PDF viewed in panel via ResourceReference works in 6.12 but not in 6.13 Hi, I think I see what happens. The ResRef is created as a local variable to create the url and then discarded. Wicket has something called ResourceReferenceRegistry. When a ResRef is used to create an url to it it is automatically registered in the registry. It seems after 6.13 there is no such auto-registration for your ResRef for some reason. You should have some WARNs in the logs. I see nothing component specific in your ResRef so I'd #mountResource() it. This way it will be always available. Martin Grigorov Freelancer, available for hire! Wicket Training and Consulting https://twitter.com/mtgrigorov On Fri, Mar 13, 2015 at 6:40 PM, Bruce Lombardi <brlom...@gmail.com> wrote: > I have a PdfViewer page that contains a panel that displays a > dynamically generated PDF using a resource reference. This works fine > in Wicket 6.12.0, but when I upgrade to 6.13.0 it stops working (just > changed Maven dependency > - no code changes). No errors are displayed and the html is generated > exactly as it is with 6.12, but the pdf does not show up in the page. > > By setting a breakpoint in Eclipse I have determined that code in the > resource that produces the response (newResourceResponse) is never > called in 6.13. After migrating to the latest version (6.19) I still > get the problem. > I've looked at the release notes for version 6.13 and see some changes > related to IResource but nothing that looks related to this problem. > > I'm hoping someone has seen something similar. Here is some of the > relevant > code: > > PdfViewer .html - just has reference to panel > > <div wicket:id="pdfPanel"></div> > > > > PdfPane.html - just has object reference > > Raw HTML > > <object wicket:id="pdf" data="" border="1" width="80%" > height="80%"></object> > > > > Generated HTML - seen with view source in browser > > <object data="./resource/org.apache.wicket.Application/pdfProducer" > > border="1" width="80%" height="80%"></object> > > > > PdfPanel.java - has setup for resource reference > > public class PdfPanel extends Panel { > > > > private static final long serialVersionUID = 1L; > > > > public PdfPanel(String id) { > > super(id); > > > > ResourceReference resourceReference = new > ResourceReference( > > "pdfProducer") { > > private static final long serialVersionUID = 1L; > > > > @Override > > public IResource getResource() { > > WebDocsSession session = > (WebDocsSession)getSession(); > > > > final byte[] pdf = session.getPdf(); > > > > if(pdf == null) > > System.out.println("PdfPanel session.getPdf returned null"); > > > > PdfResourceProducer pdfResourceProducer = > > new PdfResourceProducer(pdf); > > > > return pdfResourceProducer; > > } > > }; > > > > String url = > (String)RequestCycle.get().urlFor(resourceReference, > null); > > > > MarkupContainer wmc = new WebMarkupContainer("pdf"); > > wmc.add(new AttributeModifier("data", url)); > > add(wmc); > > } > > > > PdfProducer.java - implements the Resource > > public class PdfResourceProducer extends > AbstractResource { > > > > private static final long serialVersionUID = > -2245331056747467763L; > > final byte[] pdfByteArray; > > > > > > public PdfResourceProducer(byte[] pdfByteArray) { > > super(); > > this.pdfByteArray = pdfByteArray; > > if(pdfByteArray == null) { > > System.out.println("PdfResourceProducer > constructor called with > > null byte array."); > > } > > } > > > > @Override > > protected ResourceResponse newResourceResponse(Attributes > attributes) > { > > ResourceResponse resourceResponse = new > ResourceResponse(); > > resourceResponse.setContentType("application/pdf"); > > // resourceResponse.setTextEncoding("utf-8"); > > > > > resourceResponse.setContentLength((int)pdfByteArray.length); > > > > resourceResponse.disableCaching(); //do not allow > resource to be cached. > > > > resourceResponse.setWriteCallback(new WriteCallback() { > > @Override > > public void writeData(Attributes attributes) > throws IOException { > > try { > > OutputStream outputStream = > attributes.getResponse() > > .getOutputStream(); > > outputStream.write(pdfByteArray); > > outputStream.flush(); > > } catch (IOException e) { > > throw new WicketRuntimeException( > > "Problems writing pdf > to response..."); > > } > > } > > }); > > > > return resourceResponse; > > } > > > > Bruce > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
