java.lang.reflect.InvocationTargetException

ZK-Tracker | vincentjian | 5 years ago
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  1. 0

    Process to reproduce the problem 1. Set MVVM bean properties in session {code:java} package demo; public class BookVM { List<Item> items; String label2; public class Item { String name; public Item(String name) { this.name = name; } public String getName() { return name; } } public List<Item> getItems() { items = (ListModelList<Item>) Sessions.getCurrent().getAttribute("items"); if (items == null) { Sessions.getCurrent().setAttribute("items", items = new ListModelList<Item>()); items.add(new Item("A")); } return items; } @GlobalCommand public void doButton(@BindingParam("item") Item item) { System.out.println("vm1:" + item.getName()); } } {code} {code:java} package demo; public class BookVM2 { List<CheckItem> checkItems; public class CheckItem { String name; public CheckItem(String name) { this.name = name; } public String getName() { return name; } } public List<CheckItem> getCheckItems() { checkItems = (ListModelList<CheckItem>) Sessions.getCurrent().getAttribute("checkItems"); if (checkItems == null) { Sessions.getCurrent().setAttribute("checkItems", checkItems = new ListModelList<CheckItem>()); checkItems.add(new CheckItem("AAA")); } return checkItems; } @GlobalCommand @NotifyChange("checkItems") public void doButton(@BindingParam("item") Item item) { System.out.println("vm2:" + item.getName()); CheckItem i = new CheckItem(item.getName()); checkItems.add(i); } } {code} 2. load zul content below {code:xml} <zk> <window border="normal" width="100%" height="100%"> <borderlayout> <center> <div apply="org.zkoss.bind.BindComposer" viewModel="@id('vm1') @init('demo.BookVM')" binder="@init(queueScope='session')"> <grid model="@load(vm1.items)"> <columns sizable="true"> <column /> <column /> <column /> </columns> <template name="model" var="item"> <row> <cell><label value="@bind(item.name)" /></cell> <cell><label value="aaaa" /></cell> <cell> <button label="click" onClick="@global-command('doButton', item=item)" /> </cell> </row> </template> </grid> </div> </center> <east size="35%"> <div apply="org.zkoss.bind.BindComposer" viewModel="@id('vm2') @init('demo.BookVM2')" binder="@init(queueScope='session')"> <listbox model="@load(vm2.checkItems)"> <listhead sizable="true"> <listheader width="15%" /> </listhead> <template name="model" var="citem"> <listitem> <listcell label="@bind(citem.name)" /> </listitem> </template> </listbox> </div> </east> </borderlayout> </window> </zk> {code} 3. load the zul, and reload again 4.click the button, you will see this exception Stack trace: {code} java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.zkoss.bind.impl.ParamCall.call(ParamCall.java:108) at org.zkoss.bind.impl.BinderImpl.doGlobalCommandExecute(BinderImpl.java:1314) at org.zkoss.bind.impl.BinderImpl.doGlobalCommand(BinderImpl.java:1291) at org.zkoss.bind.impl.BinderImpl.access$2(BinderImpl.java:1281) at org.zkoss.bind.impl.BinderImpl$QueueListener.onEvent(BinderImpl.java:235) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(DesktopEventQueue.java:145) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2741) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2712) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2653) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1699) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1484) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1201) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:558) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:456) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:464) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Caused by: java.lang.NullPointerException at org.zkoss.zk.ui.AbstractComponent.addMoved(AbstractComponent.java:478) at org.zkoss.zul.Listitem.addMoved(Listitem.java:332) at org.zkoss.zk.ui.AbstractComponent.setParent(AbstractComponent.java:1055) at org.zkoss.zk.ui.AbstractComponent.insertBefore(AbstractComponent.java:1152) at org.zkoss.zul.Listbox.insertBefore(Listbox.java:1591) at org.zkoss.zul.impl.ListboxDataLoader.doListDataChange(ListboxDataLoader.java:107) at org.zkoss.zkmax.zul.impl.LiveListboxDataLoader.doListDataChange(LiveListboxDataLoader.java:95) at org.zkoss.zul.Listbox.onListDataChange(Listbox.java:2541) at org.zkoss.zul.Listbox.access$17(Listbox.java:2523) at org.zkoss.zul.Listbox$4.onChange(Listbox.java:459) at org.zkoss.zul.AbstractListModel.fireEvent(AbstractListModel.java:60) at org.zkoss.zul.ListModelList.add(ListModelList.java:162) at org.zkoss.zktest.bind.issue.B00871BeanInSession2.doButton(B00871BeanInSession2.java:40) {code}

    ZK-Tracker | 5 years ago | vincentjian
    java.lang.reflect.InvocationTargetException
  2. 0

    Process to reproduce the problem 1. Set MVVM bean properties in session {code:java} package demo; public class BookVM { List<Item> items; String label2; public class Item { String name; public Item(String name) { this.name = name; } public String getName() { return name; } } public List<Item> getItems() { items = (ListModelList<Item>) Sessions.getCurrent().getAttribute("items"); if (items == null) { Sessions.getCurrent().setAttribute("items", items = new ListModelList<Item>()); items.add(new Item("A")); } return items; } @GlobalCommand public void doButton(@BindingParam("item") Item item) { System.out.println("vm1:" + item.getName()); } } {code} {code:java} package demo; public class BookVM2 { List<CheckItem> checkItems; public class CheckItem { String name; public CheckItem(String name) { this.name = name; } public String getName() { return name; } } public List<CheckItem> getCheckItems() { checkItems = (ListModelList<CheckItem>) Sessions.getCurrent().getAttribute("checkItems"); if (checkItems == null) { Sessions.getCurrent().setAttribute("checkItems", checkItems = new ListModelList<CheckItem>()); checkItems.add(new CheckItem("AAA")); } return checkItems; } @GlobalCommand @NotifyChange("checkItems") public void doButton(@BindingParam("item") Item item) { System.out.println("vm2:" + item.getName()); CheckItem i = new CheckItem(item.getName()); checkItems.add(i); } } {code} 2. load zul content below {code:xml} <zk> <window border="normal" width="100%" height="100%"> <borderlayout> <center> <div apply="org.zkoss.bind.BindComposer" viewModel="@id('vm1') @init('demo.BookVM')" binder="@init(queueScope='session')"> <grid model="@load(vm1.items)"> <columns sizable="true"> <column /> <column /> <column /> </columns> <template name="model" var="item"> <row> <cell><label value="@bind(item.name)" /></cell> <cell><label value="aaaa" /></cell> <cell> <button label="click" onClick="@global-command('doButton', item=item)" /> </cell> </row> </template> </grid> </div> </center> <east size="35%"> <div apply="org.zkoss.bind.BindComposer" viewModel="@id('vm2') @init('demo.BookVM2')" binder="@init(queueScope='session')"> <listbox model="@load(vm2.checkItems)"> <listhead sizable="true"> <listheader width="15%" /> </listhead> <template name="model" var="citem"> <listitem> <listcell label="@bind(citem.name)" /> </listitem> </template> </listbox> </div> </east> </borderlayout> </window> </zk> {code} 3. load the zul, and reload again 4.click the button, you will see this exception Stack trace: {code} java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.zkoss.bind.impl.ParamCall.call(ParamCall.java:108) at org.zkoss.bind.impl.BinderImpl.doGlobalCommandExecute(BinderImpl.java:1314) at org.zkoss.bind.impl.BinderImpl.doGlobalCommand(BinderImpl.java:1291) at org.zkoss.bind.impl.BinderImpl.access$2(BinderImpl.java:1281) at org.zkoss.bind.impl.BinderImpl$QueueListener.onEvent(BinderImpl.java:235) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(DesktopEventQueue.java:145) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2741) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2712) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2653) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1699) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1484) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1201) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:558) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:456) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:464) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Caused by: java.lang.NullPointerException at org.zkoss.zk.ui.AbstractComponent.addMoved(AbstractComponent.java:478) at org.zkoss.zul.Listitem.addMoved(Listitem.java:332) at org.zkoss.zk.ui.AbstractComponent.setParent(AbstractComponent.java:1055) at org.zkoss.zk.ui.AbstractComponent.insertBefore(AbstractComponent.java:1152) at org.zkoss.zul.Listbox.insertBefore(Listbox.java:1591) at org.zkoss.zul.impl.ListboxDataLoader.doListDataChange(ListboxDataLoader.java:107) at org.zkoss.zkmax.zul.impl.LiveListboxDataLoader.doListDataChange(LiveListboxDataLoader.java:95) at org.zkoss.zul.Listbox.onListDataChange(Listbox.java:2541) at org.zkoss.zul.Listbox.access$17(Listbox.java:2523) at org.zkoss.zul.Listbox$4.onChange(Listbox.java:459) at org.zkoss.zul.AbstractListModel.fireEvent(AbstractListModel.java:60) at org.zkoss.zul.ListModelList.add(ListModelList.java:162) at org.zkoss.zktest.bind.issue.B00871BeanInSession2.doButton(B00871BeanInSession2.java:40) {code}

    ZK-Tracker | 5 years ago | vincentjian
    java.lang.reflect.InvocationTargetException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.zkoss.zk.ui.AbstractComponent.addMoved()
    2. ZK Kernel
      AbstractComponent.addMoved
      1. org.zkoss.zk.ui.AbstractComponent.addMoved(AbstractComponent.java:478)
      1 frame
    3. ZK XUL Components
      Listitem.addMoved
      1. org.zkoss.zul.Listitem.addMoved(Listitem.java:332)
      1 frame
    4. ZK Kernel
      AbstractComponent.insertBefore
      1. org.zkoss.zk.ui.AbstractComponent.setParent(AbstractComponent.java:1055)
      2. org.zkoss.zk.ui.AbstractComponent.insertBefore(AbstractComponent.java:1152)
      2 frames
    5. ZK XUL Components
      ListboxDataLoader.doListDataChange
      1. org.zkoss.zul.Listbox.insertBefore(Listbox.java:1591)
      2. org.zkoss.zul.impl.ListboxDataLoader.doListDataChange(ListboxDataLoader.java:107)
      2 frames
    6. org.zkoss.zkmax
      LiveListboxDataLoader.doListDataChange
      1. org.zkoss.zkmax.zul.impl.LiveListboxDataLoader.doListDataChange(LiveListboxDataLoader.java:95)
      1 frame
    7. ZK XUL Components
      ListModelList.add
      1. org.zkoss.zul.Listbox.onListDataChange(Listbox.java:2541)
      2. org.zkoss.zul.Listbox.access$17(Listbox.java:2523)
      3. org.zkoss.zul.Listbox$4.onChange(Listbox.java:459)
      4. org.zkoss.zul.AbstractListModel.fireEvent(AbstractListModel.java:60)
      5. org.zkoss.zul.ListModelList.add(ListModelList.java:162)
      5 frames
    8. org.zkoss.zktest
      B00871BeanInSession2.doButton
      1. org.zkoss.zktest.bind.issue.B00871BeanInSession2.doButton(B00871BeanInSession2.java:40)
      1 frame