Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Matthias Gasser 
Hello,

Your wicket version is fairly old. Please try the latest 1.5 release... Have a 
look at the wicket examples they provide a very good starting point.

Cheers, Matthias

--
iPhone Mail


On 19.10.2011, at 18:17, Filipe Sousa nat...@gmail.com wrote:

 Hi,
 
 I'm doing my first experiments with wicket. I'm testing the example in
 chapter 3 (Wicket in Action) with eclipse and embedded jetty. The
 wicket version I'm using is 1.3.7. The example provided works quite
 well except when I make a change and redeploy it to jetty. Then I get
 an unexpected RuntimeException. The only way to get the changes
 working is with a server restart.
 
 Wicket is running in DEVELOPMENT mode.
 
 ERROR o.a.w.RequestCycle Error calling method: public
 wicket.in.action.Cart wicket.in.action.CheesrPage.getCart() on object:
 [Page class = wicket.in.action.Index, id = 0, version = 4, ajax = 0]
 org.apache.wicket.WicketRuntimeException: Error calling method: public
 wicket.in.action.Cart wicket.in.action.CheesrPage.getCart() on object:
 [Page class = wicket.in.action.Index, id = 0, version = 4, ajax = 0]
at 
 org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver.java:1066)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:252)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.util.lang.PropertyResolver.getValue(PropertyResolver.java:91)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.model.AbstractPropertyModel.getObject(AbstractPropertyModel.java:113)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.getModelObject(Component.java:1565)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.markup.html.list.ListView.getViewSize(ListView.java:217)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:524)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:127)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.internalBeforeRender(Component.java:1009)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.beforeRender(Component.java:1041)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1590)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.onBeforeRender(Component.java:3727)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Page.onBeforeRender(Page.java:1458)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.internalBeforeRender(Component.java:1009)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.beforeRender(Component.java:1041)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Component.prepareForRender(Component.java:2167)
 ~[wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.Page.renderPage(Page.java:892) 
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.request.target.component.PageRequestTarget.respond(PageRequestTarget.java:63)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:104)
 ~[wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1245)
 [wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1316)
 [wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418)
 [wicket-1.3.7.jar:1.3.7]
at org.apache.wicket.RequestCycle.request(RequestCycle.java:532)
 [wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
 [wicket-1.3.7.jar:1.3.7]
at 
 org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:201)
 [wicket-1.3.7.jar:1.3.7]
at 
 org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1329)
 [jetty-servlet-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478)
 [jetty-servlet-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
 [jetty-server-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)
 [jetty-security-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
 [jetty-server-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:940)
 [jetty-server-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409)
 [jetty-servlet-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
 org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
 [jetty-server-7.5.3.v20111011.jar:7.5.3.v20111011]
at

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Filipe Sousa 
Hi,

I know that 1.3 is not the latest version, but I think that's the
version used in the book. Since I am learning wicket I don't want to
deal with compatibility issues.

I tried the latest version (1.5.1) and the result is worse. If I
refresh the browser 3 times I get the same exception and this time I
didn't have to redeploy.

What strikes me is that the wicket can not cast
wicket.in.action.CheesrSession to wicket.in.action.CheesrSession

public class CheesrSession extends WebSession {
private Cart cart = new Cart();

public CheesrSession(Request request) {
super(request);
}

public Cart getCart() {
return cart;
}
}

ERROR o.a.w.Component Error while getting default model object for
Component: [ [Component id = cart, page = wicket.in.action.Index, path
= 2:cart.Index$2, isVisible = true, isVersioned = true]]
ERROR o.a.w.DefaultExceptionMapper Unexpected error occurred
org.apache.wicket.WicketRuntimeException: Error calling method: public
wicket.in.action.Cart wicket.in.action.CheesrPage.getCart() on object:
[Page class = wicket.in.action.Index, id = 2, render count = 2]
at 
org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver.java:1128)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:305)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:244)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.util.lang.PropertyResolver.getValue(PropertyResolver.java:97)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.model.AbstractPropertyModel.getObject(AbstractPropertyModel.java:134)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.Component.getDefaultModelObject(Component.java:1639)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.markup.html.list.ListView.getViewSize(ListView.java:219)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:473)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:119)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.internalBeforeRender(Component.java:980)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.beforeRender(Component.java:1014)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1785)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.onBeforeRender(Component.java:3772)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Page.onBeforeRender(Page.java:823)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.internalBeforeRender(Component.java:980)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.beforeRender(Component.java:1014)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.Component.internalPrepareForRender(Component.java:2182)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Page.internalPrepareForRender(Page.java:280)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.render(Component.java:2269)
~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Page.renderPage(Page.java:1035)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:182)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:147)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:712)
~[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
~[wicket-request-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:208)
[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:251)
[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
[wicket-core-1.5.1.jar:1.5.1]
at 
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:218)
[wicket-core-1.5.1.jar:1.5.1]
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1329)
[jetty-servlet-7.5.3.v20111011.jar:7.5.3.v20111011]
at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478)
[jetty-servlet-7.5.3.v20111011.jar:7.5.3.v20111011]
at

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Igor Vaynberg 
On Wed, Oct 19, 2011 at 12:55 PM, Filipe Sousa nat...@gmail.com wrote:
 Hi,

 I know that 1.3 is not the latest version, but I think that's the
 version used in the book. Since I am learning wicket I don't want to
 deal with compatibility issues.

 I tried the latest version (1.5.1) and the result is worse. If I
 refresh the browser 3 times I get the same exception and this time I
 didn't have to redeploy.

 What strikes me is that the wicket can not cast
 wicket.in.action.CheesrSession to wicket.in.action.CheesrSession

you either somehow have two of these on your classpath or tomcate
creates another one via a different classloader and then you have a
class from one classloader trying to cast to a class loaded from
another one...its probably an environment problem :/

-igor


 public class CheesrSession extends WebSession {
        private Cart cart = new Cart();

        public CheesrSession(Request request) {
                super(request);
        }

        public Cart getCart() {
                return cart;
        }
 }

 ERROR o.a.w.Component Error while getting default model object for
 Component: [ [Component id = cart, page = wicket.in.action.Index, path
 = 2:cart.Index$2, isVisible = true, isVersioned = true]]
 ERROR o.a.w.DefaultExceptionMapper Unexpected error occurred
 org.apache.wicket.WicketRuntimeException: Error calling method: public
 wicket.in.action.Cart wicket.in.action.CheesrPage.getCart() on object:
 [Page class = wicket.in.action.Index, id = 2, render count = 2]
        at 
 org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver.java:1128)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:305)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:244)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.util.lang.PropertyResolver.getValue(PropertyResolver.java:97)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.model.AbstractPropertyModel.getObject(AbstractPropertyModel.java:134)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.Component.getDefaultModelObject(Component.java:1639)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.markup.html.list.ListView.getViewSize(ListView.java:219)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:473)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:119)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Component.internalBeforeRender(Component.java:980)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Component.beforeRender(Component.java:1014)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1785)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Component.onBeforeRender(Component.java:3772)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Page.onBeforeRender(Page.java:823)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Component.internalBeforeRender(Component.java:980)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Component.beforeRender(Component.java:1014)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.Component.internalPrepareForRender(Component.java:2182)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Page.internalPrepareForRender(Page.java:280)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Component.render(Component.java:2269)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at org.apache.wicket.Page.renderPage(Page.java:1035)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:182)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:147)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:712)
 ~[wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
 ~[wicket-request-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:208)
 [wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:251)
 [wicket-core-1.5.1.jar:1.5.1]
        at 
 org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
 [wicket-core-1.5.1.jar:1.5.1]
        at

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Deniz Oğuz 
I have also tried same examples without any issues. Try it on another server
instance or completely different server. There should be someting wrong in
your jetty, eclipse combination. This kind of classcastexceptions (can not
cast A to A) are a result of class loader hierarchy of app servers. Some how
same class is loaded by 2 different class loaders.

On Oct 19, 2011 10:56 PM, Filipe Sousa nat...@gmail.com wrote:

 Hi,

 I know that 1.3 is not the latest version, but I think that's the
 version used in the book. Since I am learning wicket I don't want to
 deal with compatibility issues.

 I tried the latest version (1.5.1) and the result is worse. If I
 refresh the browser 3 times I get the same exception and this time I
 didn't have to redeploy.

 What strikes me is that the wicket can not cast
 wicket.in.action.CheesrSession to wicket.in.action.CheesrSession

 public class CheesrSession extends WebSession {
private Cart cart = new Cart();

public CheesrSession(Request request) {
super(request);
}

public Cart getCart() {
return cart;
}
 }

 ERROR o.a.w.Component Error while getting default model object for
 Component: [ [Component id = cart, page = wicket.in.action.Index, path
 = 2:cart.Index$2, isVisible = true, isVersioned = true]]
 ERROR o.a.w.DefaultExceptionMapper Unexpected error occurred
 org.apache.wicket.WicketRuntimeException: Error calling method: public
 wicket.in.action.Cart wicket.in.action.CheesrPage.getCart() on object:
 [Page class = wicket.in.action.Index, id = 2, render count = 2]
at
org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver.java:1128)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:305)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.util.lang.PropertyResolver.getObjectAndGetSetter(PropertyResolver.java:244)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.util.lang.PropertyResolver.getValue(PropertyResolver.java:97)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.model.AbstractPropertyModel.getObject(AbstractPropertyModel.java:134)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.Component.getDefaultModelObject(Component.java:1639)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.markup.html.list.ListView.getViewSize(ListView.java:219)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:473)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:119)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.Component.internalBeforeRender(Component.java:980)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.beforeRender(Component.java:1014)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1785)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.onBeforeRender(Component.java:3772)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Page.onBeforeRender(Page.java:823)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.Component.internalBeforeRender(Component.java:980)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.beforeRender(Component.java:1014)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.Component.internalPrepareForRender(Component.java:2182)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Page.internalPrepareForRender(Page.java:280)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Component.render(Component.java:2269)
 ~[wicket-core-1.5.1.jar:1.5.1]
at org.apache.wicket.Page.renderPage(Page.java:1035)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:182)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:147)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:712)
 ~[wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
 ~[wicket-request-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:208)
 [wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:251)
 [wicket-core-1.5.1.jar:1.5.1]
at
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
 [wicket-core-1.5.1.jar:1.5.1]

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Filipe Sousa 
On Wed, Oct 19, 2011 at 9:04 PM, Igor Vaynberg igor.vaynb...@gmail.com wrote:

 you either somehow have two of these on your classpath or tomcate
 creates another one via a different classloader and then you have a
 class from one classloader trying to cast to a class loaded from
 another one...its probably an environment problem :/

 -igor

Hello Igor,

I'm not using tomcat but jetty.

I'm using apache ivy for dependencies and the only jars I have in classpath are:
geronimo-jta_1.1_spec-1.1.1.jar
jetty-continuation-7.5.3.v20111011.jar
jetty-deploy-7.5.3.v20111011.jar
jetty-http-7.5.3.v20111011.jar
jetty-io-7.5.3.v20111011.jar
jetty-jndi-7.5.3.v20111011.jar
jetty-plus-7.5.3.v20111011.jar
jetty-security-7.5.3.v20111011.jar
jetty-server-7.5.3.v20111011.jar
jetty-servlet-7.5.3.v20111011.jar
jetty-util-7.5.3.v20111011.jar
jetty-webapp-7.5.3.v20111011.jar
jetty-xml-7.5.3.v20111011.jar
logback-classic-0.9.30.jar
logback-core-0.9.30.jar
mail-1.4.1.jar
servlet-api-2.5.jar
slf4j-api-1.6.2.jar
wicket-core-1.5.1.jar
wicket-request-1.5.1.jar
wicket-util-1.5.1.jar

The command line that starts jetty inside eclipse:
 /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
-agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:44305
-XX:+CMSClassUnloadingEnabled -XX:PermSize=64M -XX:MaxPermSize=128M
-Dlogback.configurationFile=etc/logback.xml -Dfile.encoding=UTF-8
-classpath 
/home/fsousa/workspace/wicket/WebContent/WEB-INF/classes:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-core/jars/wicket-core-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-util/jars/wicket-util-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-request/jars/wicket-request-1.5.1.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-classic/jars/logback-classic-0.9.30.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-core/jars/logback-core-0.9.30.jar:/home/fsousa/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.2.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-webapp/jars/jetty-webapp-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-xml/jars/jetty-xml-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-util/jars/jetty-util-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-servlet/jars/jetty-servlet-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-security/jars/jetty-security-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-server/jars/jetty-server-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.servlet/servlet-api/jars/servlet-api-2.5.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-continuation/jars/jetty-continuation-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-http/jars/jetty-http-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-io/jars/jetty-io-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-plus/jars/jetty-plus-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.apache.geronimo.specs/geronimo-jta_1.1_spec/jars/geronimo-jta_1.1_spec-1.1.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-jndi/jars/jetty-jndi-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.mail/mail/jars/mail-1.4.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-deploy/jars/jetty-deploy-7.5.3.v20111011.jar
org.eclipse.jetty.xml.XmlConfiguration etc/jetty.xml

Thanks
-- 
Filipe Sousa

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Deniz Oğuz 
Pass -verbose:gc to your server vm to see from where your class is loaded.
On Oct 19, 2011 11:22 PM, Filipe Sousa nat...@gmail.com wrote:

 On Wed, Oct 19, 2011 at 9:04 PM, Igor Vaynberg igor.vaynb...@gmail.com
 wrote:
 
  you either somehow have two of these on your classpath or tomcate
  creates another one via a different classloader and then you have a
  class from one classloader trying to cast to a class loaded from
  another one...its probably an environment problem :/
 
  -igor

 Hello Igor,

 I'm not using tomcat but jetty.

 I'm using apache ivy for dependencies and the only jars I have in classpath
 are:
 geronimo-jta_1.1_spec-1.1.1.jar
 jetty-continuation-7.5.3.v20111011.jar
 jetty-deploy-7.5.3.v20111011.jar
 jetty-http-7.5.3.v20111011.jar
 jetty-io-7.5.3.v20111011.jar
 jetty-jndi-7.5.3.v20111011.jar
 jetty-plus-7.5.3.v20111011.jar
 jetty-security-7.5.3.v20111011.jar
 jetty-server-7.5.3.v20111011.jar
 jetty-servlet-7.5.3.v20111011.jar
 jetty-util-7.5.3.v20111011.jar
 jetty-webapp-7.5.3.v20111011.jar
 jetty-xml-7.5.3.v20111011.jar
 logback-classic-0.9.30.jar
 logback-core-0.9.30.jar
 mail-1.4.1.jar
 servlet-api-2.5.jar
 slf4j-api-1.6.2.jar
 wicket-core-1.5.1.jar
 wicket-request-1.5.1.jar
 wicket-util-1.5.1.jar

 The command line that starts jetty inside eclipse:
  /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
 -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:44305
 -XX:+CMSClassUnloadingEnabled -XX:PermSize=64M -XX:MaxPermSize=128M
 -Dlogback.configurationFile=etc/logback.xml -Dfile.encoding=UTF-8
 -classpath
 /home/fsousa/workspace/wicket/WebContent/WEB-INF/classes:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-core/jars/wicket-core-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-util/jars/wicket-util-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-request/jars/wicket-request-1.5.1.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-classic/jars/logback-classic-0.9.30.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-core/jars/logback-core-0.9.30.jar:/home/fsousa/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.2.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-webapp/jars/jetty-webapp-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-xml/jars/jetty-xml-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-util/jars/jetty-util-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-servlet/jars/jetty-servlet-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-security/jars/jetty-security-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-server/jars/jetty-server-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.servlet/servlet-api/jars/servlet-api-2.5.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-continuation/jars/jetty-continuation-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-http/jars/jetty-http-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-io/jars/jetty-io-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-plus/jars/jetty-plus-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.apache.geronimo.specs/geronimo-jta_1.1_spec/jars/geronimo-jta_1.1_spec-1.1.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-jndi/jars/jetty-jndi-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.mail/mail/jars/mail-1.4.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-deploy/jars/jetty-deploy-7.5.3.v20111011.jar
 org.eclipse.jetty.xml.XmlConfiguration etc/jetty.xml

 Thanks
 --
 Filipe Sousa

 -
 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Deniz Oğuz 
Sorry it should be verbose:class (if it is oracle jre)
On Oct 19, 2011 11:25 PM, Deniz Oğuz denizo...@gmail.com wrote:

 Pass -verbose:gc to your server vm to see from where your class is loaded.
 On Oct 19, 2011 11:22 PM, Filipe Sousa nat...@gmail.com wrote:

 On Wed, Oct 19, 2011 at 9:04 PM, Igor Vaynberg igor.vaynb...@gmail.com
 wrote:
 
  you either somehow have two of these on your classpath or tomcate
  creates another one via a different classloader and then you have a
  class from one classloader trying to cast to a class loaded from
  another one...its probably an environment problem :/
 
  -igor

 Hello Igor,

 I'm not using tomcat but jetty.

 I'm using apache ivy for dependencies and the only jars I have in
 classpath are:
 geronimo-jta_1.1_spec-1.1.1.jar
 jetty-continuation-7.5.3.v20111011.jar
 jetty-deploy-7.5.3.v20111011.jar
 jetty-http-7.5.3.v20111011.jar
 jetty-io-7.5.3.v20111011.jar
 jetty-jndi-7.5.3.v20111011.jar
 jetty-plus-7.5.3.v20111011.jar
 jetty-security-7.5.3.v20111011.jar
 jetty-server-7.5.3.v20111011.jar
 jetty-servlet-7.5.3.v20111011.jar
 jetty-util-7.5.3.v20111011.jar
 jetty-webapp-7.5.3.v20111011.jar
 jetty-xml-7.5.3.v20111011.jar
 logback-classic-0.9.30.jar
 logback-core-0.9.30.jar
 mail-1.4.1.jar
 servlet-api-2.5.jar
 slf4j-api-1.6.2.jar
 wicket-core-1.5.1.jar
 wicket-request-1.5.1.jar
 wicket-util-1.5.1.jar

 The command line that starts jetty inside eclipse:
  /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
 -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:44305
 -XX:+CMSClassUnloadingEnabled -XX:PermSize=64M -XX:MaxPermSize=128M
 -Dlogback.configurationFile=etc/logback.xml -Dfile.encoding=UTF-8
 -classpath
 /home/fsousa/workspace/wicket/WebContent/WEB-INF/classes:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-core/jars/wicket-core-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-util/jars/wicket-util-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-request/jars/wicket-request-1.5.1.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-classic/jars/logback-classic-0.9.30.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-core/jars/logback-core-0.9.30.jar:/home/fsousa/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.2.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-webapp/jars/jetty-webapp-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-xml/jars/jetty-xml-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-util/jars/jetty-util-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-servlet/jars/jetty-servlet-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-security/jars/jetty-security-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-server/jars/jetty-server-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.servlet/servlet-api/jars/servlet-api-2.5.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-continuation/jars/jetty-continuation-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-http/jars/jetty-http-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-io/jars/jetty-io-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-plus/jars/jetty-plus-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.apache.geronimo.specs/geronimo-jta_1.1_spec/jars/geronimo-jta_1.1_spec-1.1.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-jndi/jars/jetty-jndi-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.mail/mail/jars/mail-1.4.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-deploy/jars/jetty-deploy-7.5.3.v20111011.jar
 org.eclipse.jetty.xml.XmlConfiguration etc/jetty.xml

 Thanks
 --
 Filipe Sousa

 -
 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Filipe Sousa 
I stated jetty from command line (no eclipse)

$ /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
-Dlogback.configurationFile=etc/logback.xml -verbose:class
-Dfile.encoding=UTF-8 -classpath
/home/fsousa/workspace/wicket/WebContent/WEB-INF/classes:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-core/jars/wicket-core-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-util/jars/wicket-util-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-request/jars/wicket-request-1.5.1.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-classic/jars/logback-classic-0.9.30.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-core/jars/logback-core-0.9.30.jar:/home/fsousa/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.2.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-webapp/jars/jetty-webapp-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-xml/jars/jetty-xml-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-util/jars/jetty-util-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-servlet/jars/jetty-servlet-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-security/jars/jetty-security-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-server/jars/jetty-server-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.servlet/servlet-api/jars/servlet-api-2.5.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-continuation/jars/jetty-continuation-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-http/jars/jetty-http-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-io/jars/jetty-io-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-plus/jars/jetty-plus-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.apache.geronimo.specs/geronimo-jta_1.1_spec/jars/geronimo-jta_1.1_spec-1.1.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-jndi/jars/jetty-jndi-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.mail/mail/jars/mail-1.4.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-deploy/jars/jetty-deploy-7.5.3.v20111011.jar
org.eclipse.jetty.xml.XmlConfiguration etc/jetty.xml  verbose

Then I opened http://localhost:8080/wicket/ in browser and I can see
that the example works.
Next I refresh the browser and no problems
Refresh the browser again and I get the exception

$ grep CheesrSession verbose
[Loaded wicket.in.action.CheesrSession from
file:/home/fsousa/workspace/wicket/WebContent/WEB-INF/classes/]
[Loaded wicket.in.action.CheesrSession from
file:/home/fsousa/workspace/wicket/WebContent/WEB-INF/classes/]
Caused by: java.lang.ClassCastException:
wicket.in.action.CheesrSession cannot be cast to
wicket.in.action.CheesrSession

On Wed, Oct 19, 2011 at 9:27 PM, Deniz Oğuz denizo...@gmail.com wrote:
 Sorry it should be verbose:class (if it is oracle jre)
 On Oct 19, 2011 11:25 PM, Deniz Oğuz denizo...@gmail.com wrote:

 Pass -verbose:gc to your server vm to see from where your class is loaded.
 On Oct 19, 2011 11:22 PM, Filipe Sousa nat...@gmail.com wrote:

 On Wed, Oct 19, 2011 at 9:04 PM, Igor Vaynberg igor.vaynb...@gmail.com
 wrote:
 
  you either somehow have two of these on your classpath or tomcate
  creates another one via a different classloader and then you have a
  class from one classloader trying to cast to a class loaded from
  another one...its probably an environment problem :/
 
  -igor

 Hello Igor,

 I'm not using tomcat but jetty.

 I'm using apache ivy for dependencies and the only jars I have in
 classpath are:
 geronimo-jta_1.1_spec-1.1.1.jar
 jetty-continuation-7.5.3.v20111011.jar
 jetty-deploy-7.5.3.v20111011.jar
 jetty-http-7.5.3.v20111011.jar
 jetty-io-7.5.3.v20111011.jar
 jetty-jndi-7.5.3.v20111011.jar
 jetty-plus-7.5.3.v20111011.jar
 jetty-security-7.5.3.v20111011.jar
 jetty-server-7.5.3.v20111011.jar
 jetty-servlet-7.5.3.v20111011.jar
 jetty-util-7.5.3.v20111011.jar
 jetty-webapp-7.5.3.v20111011.jar
 jetty-xml-7.5.3.v20111011.jar
 logback-classic-0.9.30.jar
 logback-core-0.9.30.jar
 mail-1.4.1.jar
 servlet-api-2.5.jar
 slf4j-api-1.6.2.jar
 wicket-core-1.5.1.jar
 wicket-request-1.5.1.jar
 wicket-util-1.5.1.jar

 The command line that starts jetty inside eclipse:
  /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
 -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:44305
 -XX:+CMSClassUnloadingEnabled -XX:PermSize=64M -XX:MaxPermSize=128M
 -Dlogback.configurationFile=etc/logback.xml -Dfile.encoding=UTF-8
 -classpath

Re: ClassCastException: wicket.in.action.CheesrSession cannot be cast to wicket.in.action.CheesrSession

2011-10-19 Thread Filipe Sousa 
Here is the eclipse project with all jars included. Launch
configurations included
http://dl.dropbox.com/u/5176435/wicket.tar.gz

On Wed, Oct 19, 2011 at 9:49 PM, Filipe Sousa nat...@gmail.com wrote:
 I stated jetty from command line (no eclipse)

 $ /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
 -Dlogback.configurationFile=etc/logback.xml -verbose:class
 -Dfile.encoding=UTF-8 -classpath
 /home/fsousa/workspace/wicket/WebContent/WEB-INF/classes:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-core/jars/wicket-core-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-util/jars/wicket-util-1.5.1.jar:/home/fsousa/.ivy2/cache/org.apache.wicket/wicket-request/jars/wicket-request-1.5.1.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-classic/jars/logback-classic-0.9.30.jar:/home/fsousa/.ivy2/cache/ch.qos.logback/logback-core/jars/logback-core-0.9.30.jar:/home/fsousa/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.2.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-webapp/jars/jetty-webapp-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-xml/jars/jetty-xml-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-util/jars/jetty-util-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-servlet/jars/jetty-servlet-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-security/jars/jetty-security-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-server/jars/jetty-server-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.servlet/servlet-api/jars/servlet-api-2.5.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-continuation/jars/jetty-continuation-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-http/jars/jetty-http-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-io/jars/jetty-io-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-plus/jars/jetty-plus-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/org.apache.geronimo.specs/geronimo-jta_1.1_spec/jars/geronimo-jta_1.1_spec-1.1.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-jndi/jars/jetty-jndi-7.5.3.v20111011.jar:/home/fsousa/.ivy2/cache/javax.mail/mail/jars/mail-1.4.1.jar:/home/fsousa/.ivy2/cache/org.eclipse.jetty/jetty-deploy/jars/jetty-deploy-7.5.3.v20111011.jar
 org.eclipse.jetty.xml.XmlConfiguration etc/jetty.xml  verbose

 Then I opened http://localhost:8080/wicket/ in browser and I can see
 that the example works.
 Next I refresh the browser and no problems
 Refresh the browser again and I get the exception

 $ grep CheesrSession verbose
 [Loaded wicket.in.action.CheesrSession from
 file:/home/fsousa/workspace/wicket/WebContent/WEB-INF/classes/]
 [Loaded wicket.in.action.CheesrSession from
 file:/home/fsousa/workspace/wicket/WebContent/WEB-INF/classes/]
 Caused by: java.lang.ClassCastException:
 wicket.in.action.CheesrSession cannot be cast to
 wicket.in.action.CheesrSession

 On Wed, Oct 19, 2011 at 9:27 PM, Deniz Oğuz denizo...@gmail.com wrote:
 Sorry it should be verbose:class (if it is oracle jre)
 On Oct 19, 2011 11:25 PM, Deniz Oğuz denizo...@gmail.com wrote:

 Pass -verbose:gc to your server vm to see from where your class is loaded.
 On Oct 19, 2011 11:22 PM, Filipe Sousa nat...@gmail.com wrote:

 On Wed, Oct 19, 2011 at 9:04 PM, Igor Vaynberg igor.vaynb...@gmail.com
 wrote:
 
  you either somehow have two of these on your classpath or tomcate
  creates another one via a different classloader and then you have a
  class from one classloader trying to cast to a class loaded from
  another one...its probably an environment problem :/
 
  -igor

 Hello Igor,

 I'm not using tomcat but jetty.

 I'm using apache ivy for dependencies and the only jars I have in
 classpath are:
 geronimo-jta_1.1_spec-1.1.1.jar
 jetty-continuation-7.5.3.v20111011.jar
 jetty-deploy-7.5.3.v20111011.jar
 jetty-http-7.5.3.v20111011.jar
 jetty-io-7.5.3.v20111011.jar
 jetty-jndi-7.5.3.v20111011.jar
 jetty-plus-7.5.3.v20111011.jar
 jetty-security-7.5.3.v20111011.jar
 jetty-server-7.5.3.v20111011.jar
 jetty-servlet-7.5.3.v20111011.jar
 jetty-util-7.5.3.v20111011.jar
 jetty-webapp-7.5.3.v20111011.jar
 jetty-xml-7.5.3.v20111011.jar
 logback-classic-0.9.30.jar
 logback-core-0.9.30.jar
 mail-1.4.1.jar
 servlet-api-2.5.jar
 slf4j-api-1.6.2.jar
 wicket-core-1.5.1.jar
 wicket-request-1.5.1.jar
 wicket-util-1.5.1.jar

 The command line that starts jetty inside eclipse:
  /usr/lib/jvm/java-1.6.0-sun-1.6.0.27.x86_64/bin/java
 -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:44305
 -XX:+CMSClassUnloadingEnabled -XX:PermSize=64M -XX:MaxPermSize=128M
 -Dlogback.configurationFile=etc/logback.xml -Dfile.encoding=UTF-8
 -classpath