1
對於我得到以下錯誤一個簡單的JSF 2.0和Tomcat 7應用：ClassCastException異常：UIViewRoot不能轉換到org.portletfaces.bridge.component.PortletNamingContainerUIViewRoot
Casting Error java.lang.ClassCastException: javax.faces.component.UIViewRoot cannot be cast to org.portletfaces.bridge.component.PortletNamingContainerUIViewRoot
Aug 24, 2012 11:55:40 AM com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException
SEVERE: Error Rendering View[/hello.xhtml]
java.lang.ClassCastException: javax.faces.component.UIViewRoot cannot be cast to org.portletfaces.bridge.component.PortletNamingContainerUIViewRoot
at org.portletfaces.bridge.renderkit.html_basic.HeadRenderer.encodeBegin(HeadRenderer.java:62)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:823)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1611)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrateg y.java:380)
hello.xhtml如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:body>
<h:form>
<h:commandButton value="Welcome Me" action="welcome"></h:commandButton>
</h:form>
</h:body>
</html>