hi sven,
here it is. cheers hubert
WicketMessage: Can't instantiate page using constructor public
com.reporting.SignIn(org.apache.wicket.PageParameters) and argument
Root cause:
java.lang.NullPointerException
at com.reporting.SignIn.<init>(SignIn.java:217)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at
org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java:188)
at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:65)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:298)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:320)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:234)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:319)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:827)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:511)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:210)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:226)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
Complete stack:
org.apache.wicket.WicketRuntimeException: Can't instantiate page using
constructor public com.reporting.SignIn(org.apache.wicket.PageParameters) and
argument
at
org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java:212)
at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:65)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:298)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:320)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:234)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at
org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java:188)
at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:65)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:298)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:320)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:234)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
Am 18.05.2011 um 14:59 schrieb Sven Meier:
> Hi,
>
> > error: WicketMessage: Can't instantiate page using constructor
> > public com.test.Test(org.apache.wicket.PageParameters) and argument
>
> an exception stacktrace would give us a clue on what goes wrong here.
>
> Sven
>
> Am 18.05.2011 11:44, schrieb hubert_hupe:
>> hello,
>>
>> after hours of researching and trying get a simple tree running iam
>> completely frustrated.
>>
>> i added a tree to the website in this way:
>>
>> public class Test extends WebPage {
>>
>> protected TreeModel createTreeModel() {
>> List<Object> l1 = new ArrayList<Object>();
>> l1.add("test 1.1");
>> ....
>> }
>>
>> public Test(final PageParameters parameters) {
>> tree = new LinkTree("tree", createTreeModel());
>> add(tree);
>> }
>> markup:
>>
>> <div wicket:id="tree" class="my-tree"> </div>
>>
>> now the problem: i am not able to fetch the selected node. iam not able to
>> fetch the event...
>> i tried the following:
>>
>> add(new LinkTree("tree") {
>> public void onClick(AjaxRequestTarget target) {
>> System.out.println("Click");
>> }
>> });
>> error: WicketMessage: Can't instantiate page using constructor public
>> com.test.Test(org.apache.wicket.PageParameters) and argument
>>
>> what works is: to get an event from a link:
>>
>> add(new AjaxLink("expandAll") {
>> @Override
>> public void onClick(AjaxRequestTarget target) {
>> tree.getTreeState().expandAll();
>> tree.updateTree(target);
>> System.out.println("Click");
>> }
>> });
>>
>> the same must be possible with the tree?!
>>
>> any help is appreciated...
>>
>> cheers hubert
>>
>>
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
