帶有模型屬性模型的Primefaces 4.0RC1 menuBar在渲染視圖時拋出異常

Question

我已經將我的primefaces版本更新爲4.0RC1，因爲它支持JSF 2.2。 （Over Glassfish 4）

我使用的是primefaces菜單欄來顯示我的應用程序菜單，它用於在primefaces 3.5中正常工作，但它不再工作。

<p:menubar model="#{myBean.userMenu}" /> 

正如您在上面的代碼中看到的那樣，即時消息使用模型以便以編程方式顯示我的菜單。

當試圖渲染視圖，以下異常被拋出：

java.lang.IllegalArgumentException: 0 
    at javax.faces.component.UIComponentBase.validateId(UIComponentBase.java:591) 
    at javax.faces.component.UIComponentBase.setId(UIComponentBase.java:412) 
    at org.primefaces.model.menu.BaseMenuModel.generateUniqueIds(BaseMenuModel.java:54) 
    at org.primefaces.model.menu.BaseMenuModel.generateUniqueIds(BaseMenuModel.java:42) 
    at org.primefaces.model.menu.DefaultMenuModel.generateUniqueIds(DefaultMenuModel.java:28) 
    at org.primefaces.component.menu.BaseMenuRenderer.encodeEnd(BaseMenuRenderer.java:96) 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) 
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:176) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894) 
    at org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:70) 
    at org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:57) 
    at org.primefaces.component.layout.LayoutUnitRenderer.encodeEnd(LayoutUnitRenderer.java:51) 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) 
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443) 
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) 
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:70) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
    at com.gbmemory.ebayresources.authorization.LoggedOutFilter.doFilter(LoggedOutFilter.java:33) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
    at com.gbmemory.ebayresources.authorization.RememberMeFilter.doFilter(RememberMeFilter.java:32) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) 
    at java.lang.Thread.run(Thread.java:722) 

Answer 1

我已經解決了我的問題，現在繼承org.primefaces.model.menu.BaseMenuModel這樣的：

public class MyDefaultMenuModel extends BaseMenuModel { 

    private boolean generated = false; 

    @Override 
    public void generateUniqueIds() { 
     if(!generated) { 
      generateUniqueIds(getElements(), "_"); 
      generated = true; 
     } 
    } 

    private void generateUniqueIds(List<MenuElement> elements, String seed) { 
     if(elements == null || elements.isEmpty()) { 
      return; 
     } 

     int counter = 0; 

     for(MenuElement element : elements) { 
      String id = (seed == null) ? String.valueOf(counter++) : seed + "_" + counter++; 
      element.setId(id); 

      if(element instanceof MenuGroup) {     
       generateUniqueIds(((MenuGroup) element).getElements(), id); 
      } 
     } 
    } 
} 

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