I like that deal.. :-) On Wed, Aug 29, 2012 at 3:09 PM, Martin Grigorov <mgrigo...@apache.org>wrote:
> I'll improve the javadoc. You improve the wiki page ;-) > > On Wed, Aug 29, 2012 at 9:07 AM, James Eliyezar <ja...@mcruncher.com> > wrote: > > Thanks Martin for the info. > > A note in PageRequestHandlerTracker's javadoc can be very useful. > > And it will be great if this is reflected in the wiki page "Request Cycle > > in wicket 1.5< > https://cwiki.apache.org/WICKET/requestcycle-in-wicket-15.html> > > ". > > > > On Wed, Aug 29, 2012 at 3:03 PM, Martin Grigorov <mgrigo...@apache.org > >wrote: > > > >> Hi, > >> > >> Yes, you have to register it. > >> It is not registered by default because not everyone needs it. > >> > >> On Wed, Aug 29, 2012 at 9:01 AM, James Eliyezar <ja...@mcruncher.com> > >> wrote: > >> > Guys, > >> > > >> > From the javadoc of IRequestCycleListener, I found that we have to > >> > explicitly register the implementations. > >> > I thought PageRequestHandlerTracker would have been registered by > default > >> > as that's from wicket. > >> > So, when I registered it manually, it worked as expected. This is how > I > >> > registered it in the wicket application's "init" method. > >> > > >> > @Override > >> >> public void init() > >> >> { > >> >> super.init(); > >> >> getRequestCycleListeners().add(new > PageRequestHandlerTracker()); > >> >> } > >> >> > >> > > >> > On Wed, Aug 29, 2012 at 2:41 PM, James Eliyezar <ja...@mcruncher.com> > >> wrote: > >> > > >> >> Should I register PageRequestHandlerTracker anywhere? > >> >> > >> >> > >> >> On Wed, Aug 29, 2012 at 2:40 PM, James Eliyezar <ja...@mcruncher.com > >> >wrote: > >> >> > >> >>> Alright Paul. > >> >>> > >> >>> This is my code: > >> >>> > >> >>> public class HomePage extends WebPage > >> >>>> { > >> >>>> private static Logger logger = > >> >>>> LoggerFactory.getLogger(HomePage.class); > >> >>>> private static final long serialVersionUID = 1L; > >> >>>> > >> >>>> public HomePage(final PageParameters parameters) > >> >>>> { > >> >>>> add(new Label("version", > >> >>>> getApplication().getFrameworkSettings().getVersion())); > >> >>>> try { > >> >>>> IPageRequestHandler lastHandler = > >> >>>> PageRequestHandlerTracker.getLastHandler(RequestCycle.get()); > >> >>>> logger.debug("Last handler: {}", lastHandler); > >> >>>> logger.debug("Requested page", lastHandler.getPage()); > >> >>>> } catch (Exception ex) { > >> >>>> logger.error("Error", ex); > >> >>>> } > >> >>>> } > >> >>>> } > >> >>>> > >> >>>> > >> >>> This is the log with exception stack trace: > >> >>> > >> >>> [INFO] Started Jetty Server > >> >>>> DEBUG - HomePage - Last handler: null > >> >>>> ERROR - DefaultExceptionMapper - Unexpected error occurred > >> >>>> org.apache.wicket.WicketRuntimeException: Can't instantiate page > using > >> >>>> constructor 'public > >> >>>> > >> > org.apache.wicket.quickstart.HomePage(org.apache.wicket.request.mapper.parameter.PageParameters)' > >> >>>> and argument ''. Might be it doesn't exist, may be it is not > visible > >> >>>> (public). > >> >>>> at > >> >>>> > >> > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:193) > >> >>>> at > >> >>>> > >> > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:76) > >> >>>> at > >> >>>> > >> > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:46) > >> >>>> at > >> >>>> > >> > org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:103) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:274) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:93) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:237) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212) > >> >>>> at > >> >>>> > >> > org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283) > >> >>>> at > >> >>>> > >> > org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) > >> >>>> at > >> >>>> > >> > org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:244) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1326) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.ContextHandler.__doHandle(ContextHandler.java:940) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:874) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) > >> >>>> at org.eclipse.jetty.server.Server.handle(Server.java:349) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:904) > >> >>>> at > >> org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:565) > >> >>>> at > >> >>>> > org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:217) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:46) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:545) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:43) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) > >> >>>> at > >> >>>> > >> > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) > >> >>>> at java.lang.Thread.run(Thread.java:662) > >> >>>> Caused by: java.lang.reflect.InvocationTargetException > >> >>>> at > sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > >> >>>> Method) > >> >>>> at > >> >>>> > >> > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) > >> >>>> at > >> >>>> > >> > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) > >> >>>> at > java.lang.reflect.Constructor.newInstance(Constructor.java:513) > >> >>>> at > >> >>>> > >> > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:170) > >> >>>> ... 41 more > >> >>>> Caused by: java.lang.NullPointerException > >> >>>> at > org.apache.wicket.quickstart.HomePage.<init>(HomePage.java:22) > >> >>>> ... 46 more > >> >>>> > >> >>>> > >> >>> I've attached a quickstart project to recreate the problem. > >> >>> > >> >>> - Unzip it > >> >>> - mvn clean package jetty:run > >> >>> - Point your browser to http://localhost:8080 > >> >>> - Watch out the console for the exception. > >> >>> > >> >>> > >> >>> On Wed, Aug 29, 2012 at 12:53 PM, Paul Borș <p...@bors.ws> wrote: > >> >>> > >> >>>> Might help if you provide a stack trace for the NPE :) > >> >>>> > >> >>>> Have a great day, > >> >>>> Paul Borș > >> >>>> > >> >>>> On Aug 29, 2012, at 0:37, James Eliyezar <ja...@mcruncher.com> > wrote: > >> >>>> > >> >>>> > Hi, > >> >>>> > > >> >>>> > We recently migrated our application to wicket-1.5.8. > >> >>>> > > >> >>>> > We have an audit aspect based on Spring AOP that shall log the > >> actions > >> >>>> > performed in the current page. > >> >>>> > In wicket 1.4 we use to get that like > >> >>>> > "RequestCycle.get().getResponsePage()". > >> >>>> > > >> >>>> > This has changed and I know that wicket 1.5 doesn't support this > >> >>>> anymore. > >> >>>> > > >> >>>> > The suggested method as per the wiki is to "use a custom > >> >>>> > RequestCycleListener< > >> >>>> https://cwiki.apache.org/WICKET/requestcycle-in-wicket-15.html> > >> >>>> > ". > >> >>>> > > >> >>>> > Fortunately, as highlighted in the mailing list, there is a new > >> class > >> >>>> in > >> >>>> > wicket 1.5.8 named > >> >>>> > PageRequestHandlerTracker< > >> >>>> > >> > http://apache-wicket.1842946.n4.nabble.com/Interpolate-response-with-IResponseFilter-td4651476.html > >> >>>> >to > >> >>>> > meet this common requirement. > >> >>>> > > >> >>>> > However, when we use > >> >>>> > PageRequestHandlerTracker.getLastHandler(RequestCycle.get()), > >> >>>> > and then attempt to call #getPage(), a null pointer exception is > >> >>>> thrown. > >> >>>> > > >> >>>> > Am I doing something wrong here? Please give your suggestions. > >> >>>> > > >> >>>> > -- > >> >>>> > Thanks & regards > >> >>>> > James Selvakumar > >> >>>> > mcruncher.com > >> >>>> > >> >>>> > --------------------------------------------------------------------- > >> >>>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > >> >>>> For additional commands, e-mail: users-h...@wicket.apache.org > >> >>>> > >> >>>> > >> >>> > >> >>> > >> >>> -- > >> >>> Thanks & regards > >> >>> James Selvakumar > >> >>> mcruncher.com > >> >>> > >> >>> > >> >> > >> >> > >> >> -- > >> >> Thanks & regards > >> >> James Selvakumar > >> >> mcruncher.com > >> >> > >> >> > >> > > >> > > >> > -- > >> > Thanks & regards > >> > James Selvakumar > >> > mcruncher.com > >> > >> > >> > >> -- > >> Martin Grigorov > >> jWeekend > >> Training, Consulting, Development > >> http://jWeekend.com > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > >> For additional commands, e-mail: users-h...@wicket.apache.org > >> > >> > > > > > > -- > > Thanks & regards > > James Selvakumar > > mcruncher.com > > > > -- > Martin Grigorov > jWeekend > Training, Consulting, Development > http://jWeekend.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > > -- Thanks & regards James Selvakumar mcruncher.com
