On Fri, 2011-12-30 at 12:46 +0100, Rahman USTA wrote:
> Hi, i wanna add an item to DropDownChoice's List after form submitted. i
> used for example,
>
>
>
> private List<String> *cities*=Arrays.asList("İstanbul","Ankara","Kayseri");
The Exception is thrown because Arrays.asList returns a List
implementation that does not offer an add() implementation. (This is
allowed by the List API.) (This is not a Wicket issue.)
Change the above line to:
pivate List<String> cities = new ArrayList<String>();
java.util.Collections.addAll(cities, "İstanbul","Ankara","Kayseri");
Cheers,
Chantal
>
> final DropDownChoice<String> cityList=new
> DropDownChoice<String>("sehirListesi", Model.of("İstanbul"),
> new PropertyModel<List<? extends String>>(this,"cities"));
>
> then
>
> Form form=new Form("form"){
> @Override
> public void onSubmit() {
>
> *cities*.add("İzmir");
> info("Form başarıyla gönderildi");
>
> }
> };
>
> but, i get this exceptions.
>
> --------------------
> Unexpected RuntimeException
>
> Last cause: null
> WicketMessage: Method onFormSubmitted of interface
> org.apache.wicket.markup.html.form.IFormSubmitListener targeted at [
> [Component id = form]] on component [ [Component id = form]] threw an
> exception
>
> Stacktrace
>
> Root cause:
>
> java.lang.UnsupportedOperationException
> at java.util.AbstractList.add(AbstractList.java:131)
> at java.util.AbstractList.add(AbstractList.java:91)
> at com.usta.HomePage$1.onSubmit(HomePage.java:74)
> at org.apache.wicket.markup.html.form.Form$10.component(Form.java:1189)
> at org.apache.wicket.markup.html.form.Form$10.component(Form.java:1184)
> at
> org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:273)
> at org.apache.wicket.util.visit.Visits.visitPostOrder(Visits.java:244)
> at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1182)
> at org.apache.wicket.markup.html.form.Form.process(Form.java:838)
> at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:762)
> at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:692)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:260)
> at
> org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:216)
> at
> org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:248)
> at
> org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:234)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:750)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:252)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:209)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:280)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:218)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1326)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:940)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:874)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
> at org.eclipse.jetty.server.Server.handle(Server.java:349)
> at
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
> at
> org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:921)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:784)
> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:223)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:50)
> at
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:245)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
> at java.lang.Thread.run(Thread.java:662)
>
> Complete stack:
>
> org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of
> interface org.apache.wicket.markup.html.form.IFormSubmitListener
> targeted at [ [Component id = form]] on component [ [Component id =
> form]] threw an exception
> at
> org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:270)
> at
> org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:216)
> at
> org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:248)
> at
> org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:234)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:750)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:252)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:209)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:280)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
>
> java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:260)
> at
> org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:216)
> at
> org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:248)
> at
> org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:234)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:750)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:252)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:209)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:280)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
>
> display page
> view<http://localhost:8080/wicket/page?2-1.ILinkListener-displayPageViewLink>
>
>
>
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