Sorry. The complete stack trace shown on the web page is as follows. I noted that they mirrored what have been logged by Tomcat.
I was with Tomcat's default config. And I did not persist anything consciously yet. How to check if "persistent sessions" are in use in Tomcat? Thanks I am not sure if "ClassNotFoundException" is misleading somewhat. If really "ClassNotFoundException", the same class should still not be found whether I repeat the click slowly or rapidly. But it seems to me that this exception appears only when I repeat the click rapidly enough. Tomcat version : 1.6.0.18 java version "1.6.0_07" Java(TM) SE Runtime Environment (build 1.6.0_07-b06) Java HotSpot(TM) 64-Bit Server VM (build 10.0-b23, mixed mode) Thank you very much Wilfred (I later assembled an application with Spring + Freemarker doing similar demonstration on the same Tomcat. When I repeatedly clicked "add to cart", a cheese item did go to the cart on each click without breakdown no matter how quickly the repetition was. Weird) > ***************** > Unexpected RuntimeException > > Root cause: > > java.lang.ClassNotFoundException: [Lmycheese.Cheese; > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) > at > org.apache.wicket.application.DefaultClassResolver.resolveClass(DefaultClassResolver.java:103) > at > org.apache.wicket.util.io.IObjectStreamFactory$1.resolveClass(IObjectStreamFactory.java:87) > at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575) > at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496) > at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1624) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) > at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:480) > at org.apache.wicket.Component.readObject(Component.java:4223) > at java.lang.reflect.Method.invoke(Method.java:597) > at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) > at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) > at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) > at org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:393) > at > org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage(AbstractPageStore.java:228) > at > org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(DiskPageStore.java:706) > at > org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.get(SecondLevelCacheSessionStore.java:311) > at org.apache.wicket.Session.getPage(Session.java:751) > at > org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage(AbstractRequestCycleProcessor.java:448) > at > org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(WebRequestCycleProcessor.java:139) > at org.apache.wicket.RequestCycle.step(RequestCycle.java:1229) > at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1349) > at org.apache.wicket.RequestCycle.request(RequestCycle.java:493) > at > org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:387) > at > org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:199) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) > at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Thread.java:619) > > Complete stack: > > java.lang.RuntimeException: Could not deserialize object using > `org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory` > object factory > at org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:406) > at > org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage(AbstractPageStore.java:228) > at > org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(DiskPageStore.java:706) > at > org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.get(SecondLevelCacheSessionStore.java:311) > at org.apache.wicket.Session.getPage(Session.java:751) > at > org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage(AbstractRequestCycleProcessor.java:448) > at > org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(WebRequestCycleProcessor.java:139) > at org.apache.wicket.RequestCycle.step(RequestCycle.java:1229) > at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1349) > at org.apache.wicket.RequestCycle.request(RequestCycle.java:493) > at > org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:387) > > display page view > > > ***************** jwcarman wrote: > > full stack trace please? Are you using persistent sessions in tomcat? > > On Sat, Aug 30, 2008 at 7:54 AM, wil2008 <[EMAIL PROTECTED]> wrote: >> >> I am new to Wicket (but not new to HTML, Java and Spring). >> I tried to follow the examples in the ebook of "Wicket in Action". >> Everything is fine until Chapter 3. I followed the cheese application >> which >> demonstrates a plain shopping cart. I compiled and ran the front page >> successfully (including the Index.html and Index.java, up to page 60). I >> could "add to cart" and "remove" successfully. So far so good. When I >> clicked "add to cart" repeatedly and slowly, it was still good. But If I >> clicked quickly enough, the following bunch of "Unexpected >> RuntimeException" >> appeared. >> >> I am not sure this is particular to this specific example or is general >> for >> other Wicket components. >> Did I miss something? Does anyone come across something similar? >> This is important if I am to propose Wicket in a serious project. >> Thank you very much! >> >> Wicket version: 1.3.4 >> >> <output> >> Could not deserialize object using >> `org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory` >> object factory >> at >> org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:411) >> ........ >> ........ >> Caused by: java.lang.ClassNotFoundException: [Lmycheese.Cheese; >> at >> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) >> ............. >> ............ >> </output> >> -- >> View this message in context: >> http://www.nabble.com/Clicking-%22add-to-cart%22-repeatedly-tp19232702p19232702.html >> Sent from the Wicket - User mailing list archive at Nabble.com. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- View this message in context: http://www.nabble.com/Clicking-%22add-to-cart%22-repeatedly-tp19232702p19243657.html Sent from the Wicket - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
