jsf在jboss4.0运行问题
我在tomcat5.5下可以正常运行的jsf工程,部署到jboss服务器上运行出错 
 希望各位高手给予赐教:谢谢   
 错误信息如下: 
 type   Exception   report 
 message      
 description   The   server   encountered   an   internal   error   ()   that   prevented   it   from   fulfilling   this   request.   
 exception       
org.apache.jasper.JasperException:   Exception   in   JSP:   /index.jsp:12   
 9:    </head>  
 10:          
 11:    <body>  
 12:   	 <f:view>  
 13:   		 <h:form>  
 14:   		    <h:panelGrid   rendered= "true "   id= "panelGrid1 "   columns= "3 ">  
 15:   		       <h:outputLabel   value= "Name "   for= "name "   />      
 Stacktrace:	org.apache.jasper.servlet.JspServletWrapper.handle
JspException(JspServletWrapper.java:506) 
 	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395) 
 	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) 
 	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) 
 	javax.servlet.http.HttpServlet.service(HttpServlet.java:810) 
 	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322) 
 	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147) 
 	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87) 
 	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200) 
 	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117) 
 	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198) 
 	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)     
 root   cause       
java.lang.NullPointerException  	javax.faces.webapp.UIComponentTag.setupResponseWriter(UIComponentTag.java:929) 
 	javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:310) 
 	org.apache.myfaces.taglib.core.ViewTag.doStartTag(ViewTag.java:70) 
 	org.apache.jsp.index_jsp._jspx_meth_f_view_0(index_jsp.java:113) 
 	org.apache.jsp.index_jsp._jspService(index_jsp.java:88) 
 	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) 
 	javax.servlet.http.HttpServlet.service(HttpServlet.java:810) 
 	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334) 
 	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) 
 	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) 
 	javax.servlet.http.HttpServlet.service(HttpServlet.java:810) 
 	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322) 
 	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147) 
 	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87) 
 	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200) 
 	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117) 
 	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198) 
 	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)     
 note   The   full   stack   trace   of   the   root   cause   is   available   in   the   Apache   Tomca