Hi,
Thanks for reporting this. I will fix the example and adapt it to wicket
8.x.
On Thu, Aug 22, 2019 at 11:05 PM Benjamin Chew <bc...@smarthealth.com>
wrote:
Hi,
I'm pretty new to Wicket, and am trying to figure out how to stream a
PDF
into an iFrame. I've searched for a solution and come across Ernesto's
DocumentInlineFrame class here:
https://github.com/reiern70/antilia-bits/blob/master/content-iframe/src/main/java/com/antilia/iframe/DocumentInlineFrame.java
Since IResourceListener is no longer a part of Wicket 8, I've modified
the
class in these ways:
1) The class implements IRequestListener
2) Return urlForListener(null) in getURL()
3) Renamed onResourceRequested() to onRequest()
But I'm getting an error:
ERROR org.apache.wicket.DefaultExceptionMapper - Unexpected error
occurred
java.lang.IllegalStateException: Committed
The code and full stack trace are below. Any ideas on what I'm doing
wrong?
Thanks,
Ben
/*** CODE ***/
public class DocumentInlineFrame extends WebMarkupContainer implements
*IRequestListener* {
private static final long serialVersionUID = 1 L;
private IResource documentResource;
/**
* Constructor receiving an IResourceStream..
*
* @param id
* @param stream
*/
public DocumentInlineFrame(String id, IResourceStream stream) {
this(id, new ResourceStreamResource(stream));
}
/**
* Constructor receiving an IResource..
*
* @param id
* @param resourceListener
*/
public DocumentInlineFrame(final String id, IResource
documentResource)
{
super(id);
this.documentResource = documentResource;
}
/**
* Gets the url to use for this link.
*
* @return The URL that this link links to
*/
protected CharSequence getURL() {
//return urlForListener(new PageParameters());
*return urlForListener(null);*
}
/**
* Handles this frame's tag.
*
* @param tag the component tag
* @see org.apache.wicket.Component#onComponentTag(ComponentTag)
*/
@Override
protected void onComponentTag(final ComponentTag tag) {
checkComponentTag(tag, "iframe");
// Set href to link to this frame's frameRequested method
CharSequence url = getURL();
// generate the src attribute
tag.put("src", Strings.replaceAll(url, "&", "&"));
super.onComponentTag(tag);
}
@Override
protected boolean getStatelessHint() {
return false;
}
@Override
public void onRequest() {
*RequestCycle requestCycle = RequestCycle.get(); Attributes
attributes = new Attributes(requestCycle.getRequest(),
requestCycle.getResponse(), null);
this.documentResource.respond(attributes);*
}
}
/*** END CODE ***/
/*** STACK TRACE ***/
Aug 22 12:37:54 WARN RequestCycleExtra -
********************************
Aug 22 12:37:54 ERROR org.apache.wicket.DefaultExceptionMapper -
Unexpected error occurred
java.lang.IllegalStateException: Committed
at
org.eclipse.jetty.server.HttpChannel.resetBuffer(HttpChannel.java:894)
at
org.eclipse.jetty.server.HttpOutput$Interceptor.resetBuffer(HttpOutput.java:116)
at org.eclipse.jetty.server.HttpOutput.resetBuffer(HttpOutput.java:959)
at org.eclipse.jetty.server.Response.resetBuffer(Response.java:1312)
at org.eclipse.jetty.server.Response.sendRedirect(Response.java:720)
at org.eclipse.jetty.server.Response.sendRedirect(Response.java:729)
at
org.apache.wicket.protocol.http.servlet.ServletWebResponse.sendRedirect(ServletWebResponse.java:288)
at
org.apache.wicket.protocol.http.HeaderBufferingWebResponse.sendRedirect(HeaderBufferingWebResponse.java:117)
at
org.apache.wicket.request.handler.render.WebPageRenderer.redirectTo(WebPageRenderer.java:161)
at
org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:280)
at
org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:202)
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914)
at
org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65)
at
org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282)
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253)
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221)
at
org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:275)
at
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
at
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:740)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:503)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
at
org.eclipse.jetty.io
.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
at
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.lang.Thread.run(Thread.java:745)
Aug 22 12:37:54 ERROR org.apache.wicket.request.cycle.RequestCycle -
Exception retry count exceeded
java.lang.IllegalStateException: STREAM
at org.eclipse.jetty.server.Response.getWriter(Response.java:931)
at
org.apache.wicket.protocol.http.servlet.ServletWebResponse.write(ServletWebResponse.java:110)
at
org.apache.wicket.protocol.http.HeaderBufferingWebResponse.write(HeaderBufferingWebResponse.java:179)
at
org.apache.wicket.protocol.http.BufferedWebResponse$WriteCharSequenceAction.invoke(BufferedWebResponse.java:171)
at
org.apache.wicket.protocol.http.BufferedWebResponse.writeTo(BufferedWebResponse.java:602)
at
org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:198)
at
org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:202)
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914)
at
org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65)
at
org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:327)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.executeExceptionRequestHandler(RequestCycle.java:335)
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:259)
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221)
at
org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:275)
at
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
at
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:740)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:503)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
at
org.eclipse.jetty.io
.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
at
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.lang.Thread.run(Thread.java:745)
/*** END STACK TRACE ***/
--
Regards - Ernesto Reinaldo Barreiro