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
