I am using wicket 1.1.1, but this error was there also with version 1.1.
I did not test with version 1.0.
I created just a simple Index page, extending a base page which
includes a border component to define a layout. When I access the page
everything goes fine, but If I reload the page, the following error
occurs:
Unexpected RuntimeException
java.lang.IllegalArgumentException: A child with id '_header' already exists:
[MarkupContainer [Component id = pageLayout, page = page.Index, path =
0:pageLayout.PageLayout, isVisible = true, isVersioned = true]]
at wicket.MarkupContainer.add(MarkupContainer.java:135)
at page.base.MyPage.add(MyPage.java:35)
at wicket.MarkupContainer.autoAdd(MarkupContainer.java:168)
at wicket.markup.html.HtmlHeaderResolver.resolve(HtmlHeaderResolver.java:73)
at wicket.MarkupContainer.renderNext(MarkupContainer.java:1146)
at wicket.MarkupContainer.renderAll(MarkupContainer.java:779)
at wicket.Page.onRender(Page.java:788)
at wicket.Component.render(Component.java:1163)
at wicket.Page.doRender(Page.java:251)
at wicket.RequestCycle.respond(RequestCycle.java:948)
at wicket.RequestCycle.request(RequestCycle.java:411)
at wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:208)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Component Tree
Component tree for [Page class = page.Index, id = 0]:
# Path Type Model Object
1 pageLayout border.PageLayout
2 pageLayout:_body wicket.markup.html.BodyOnLoadContainer
3 pageLayout:_child wicket.markup.html.WebMarkupContainer
4 pageLayout:_child:_extend
wicket.markup.html.WebMarkupContainer
5 pageLayout:_header wicket.markup.html.HtmlHeaderContainer
If needed I can post zipped here the 6 files used (3 java and 3 html).
Thanks in advance,
--
__
André Matheus
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