我已经从mojarra-2.2.15迁移到myfaces-2.2.12。以编程方式加载复合组件时，我正在获取ClassCastException。但是在mojarra中也可以正常工作。
环境详细信息： wildfly-11，myfaces-2.2.12
以编程方式包括复合组件的代码： 参考：Programmatically create and add composite component in backing bean
private void includeCompositeComponent(UIComponent parent, String libraryName, String resourceName, String id, Map<String, Object> attributes) {
// Prepare.
FacesContext context = FacesContext.getCurrentInstance();
Application application = context.getApplication();
FaceletContext faceletContext = (FaceletContext) context.getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY);
// This basically creates <ui:component> based on <composite:interface>.
Resource resource = application.getResourceHandler().createResource(resourceName, libraryName);
UIComponent composite = application.createComponent(context, resource);
composite.setId(id); // Mandatory for the case composite is part of UIForm! Otherwise JSF can't find inputs.
if (attributes != null) {
composite.getAttributes().putAll(attributes);
}
// This basically creates <composite:implementation>.
UIComponent implementation = application.createComponent(UIPanel.COMPONENT_TYPE);
implementation.setRendererType("javax.faces.Group");
composite.getFacets().put(UIComponent.COMPOSITE_FACET_NAME, implementation);
// Now include the composite component file in the given parent.
parent.getChildren().add(composite);
parent.pushComponentToEL(context, composite); // This makes #{cc} available.
try {
faceletContext.includeFacelet(implementation, resource.getURL());
} catch (IOException e) {
throw new FacesException(e);
} finally {
parent.popComponentFromEL(context);
}
}
includeCompositeComponent(form, "lib", "test.xhtml", "test_id", new HashMap());
例外：-
ERROR [io.undertow.request] UT005023: Exception handling request to /samplejsf1/lifecycleTest.xhtml: javax.servlet.ServletException: javax.faces.component.UIPanel cannot be cast to javax.faces.component.html.HtmlPanelGroup
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:230)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:129)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: javax.faces.component.UIPanel cannot be cast to javax.faces.component.html.HtmlPanelGroup
at org.apache.myfaces.shared.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:72)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:675)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:555)
at org.apache.myfaces.renderkit.html.HtmlCompositeComponentRenderer.encodeChildren(HtmlCompositeComponentRenderer.java:66)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:644)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:542)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:551)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:551)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:551)
at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1891)
at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:313)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:58)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:58)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:58)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:116)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:267)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:200)
... 32 more
如何解决这个问题？