pageparameters is used for passing parameters on the url, so it only supports strings or whatever you can convert to a string.
-igor On Fri, Sep 26, 2008 at 9:35 PM, fish3934 <[EMAIL PROTECTED]> wrote: > Hi All, > I wanted to pass an object from one page to another page,so > I set an object into a parameter: > PageParameters para=new PageParameters(); > para.put("result",resultList);//resultList is a List contains some pojo. > //jump to another page > setResponsePage(DeviceEnquiry.class,para); > > Then at DeviceEnquiry.java ,I want to get resultList: > class DeviceEnquiry extends WebPage > { > public DeviceEnquiry (PageParameters param) > { > List list = (List)param.get("result"); > //.... > } > } > > But I got an exception: > > > WicketMessage: Can't instantiate page using constructor public > com.hk.xportal.xseries.enquiry.DeviceEnquiry(org.apache.wicket.PageParameters) > and argument result = "[EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL > PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL > PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]" > > Root cause: > > java.lang.ClassCastException: [Ljava.lang.String; > at > com.hk.xportal.xseries.enquiry.DeviceEnquiry.<init>(DeviceEnquiry.java:16) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > at java.lang.reflect.Constructor.newInstance(Constructor.java:494) > at > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:147) > at > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:88) > at > org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:268) > at > org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:283) > at > org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:210) > at > org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91) > at > org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1171) > at org.apache.wicket.RequestCycle.step(RequestCycle.java:1248) > 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:215) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874) > at > org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) > at > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) > at > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) > at java.lang.Thread.run(Thread.java:595) > > Complete stack: > > org.apache.wicket.WicketRuntimeException: Can't instantiate page using > constructor public > com.hk.xportal.xseries.enquiry.DeviceEnquiry(org.apache.wicket.PageParameters) > and argument result = "[EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL > PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL > PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]" > at > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:168) > at > org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:88) > at > org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:268) > at > org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:283) > at > org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:210) > at > org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91) > at > org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1171) > at org.apache.wicket.RequestCycle.step(RequestCycle.java:1248) > 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) > > //.... > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]