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)

//....

 
 

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