jsf problem , java.lang.RuntimeException: Cannot find FacesContext error

hi,
i just started work with jsf with eclipse and i need help to solve a problem.
i use Eclipse Elios, Tomcat 6.0 and JFS 1.2 (SUN version)
heres what i done
i created a new dynamic web project with eclipse, with javaserver faces 1.2 runtime and i added the relative jars (jsf-api jsf-impl and jstl-api-1.2).
i created a new jsp page with "New javaserver faces (JSF) Page (html)" template and added in it a simple empty table from the palette.
i generated the war fime and mounted on apache tomcat but it give me this error:
java.lang.RuntimeException: Cannot find FacesContext

follow the full error trace and java code in my project:

ERROR:

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /prova.jsp at line 11

8: <title>Insert title here</title>
9: </head>
10: <body>
11: <f:view>
12: 
13: 	<h:dataTable border="1">
14: 		<h:column id="column1">

Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause

java.lang.RuntimeException: Cannot find FacesContext
	javax.faces.webapp.UIComponentClassicTagBase.getFacesContext(UIComponentClassicTagBase.java:1852)
	javax.faces.webapp.UIComponentClassicTagBase.setJspId(UIComponentClassicTagBase.java:1669)
	org.apache.jsp.prova_jsp._jspx_meth_f_005fview_005f0(prova_jsp.java:105)
	org.apache.jsp.prova_jsp._jspService(prova_jsp.java:79)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

JSP FILE:

web.xml and faces-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>prova</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
  </servlet-mapping>
  <context-param>
    <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>client</param-value>
  </context-param>
  <context-param>
    <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
    <param-value>resources.application</param-value>
  </context-param>
  <listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
  </listener>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
  </servlet-mapping>
</web-app>

.

<?xml version="1.0" encoding="UTF-8"?>

<faces-config
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/w...sconfig_1_2.xsd"
    version="1.2">

</faces-config>

someone have idea of what that error mean and what i should do?
tnx in advice.
regards.

It looks like you're confusing the resource path with the URL. Only URLs that match the mapping(s) you set up for the FacesServlet in web.xml are routed to the FacesServlet, and only the FacesServlet provides the FacesContext.

In other words, instead of asking for the resource ("/mywebapp/prova.jsp"), you need to ask for the URL ("http:/mywebapp/faces/prova.jsp")

Tim Holloway wrote:It looks like you're confusing the resource path with the URL. Only URLs that match the mapping(s) you set up for the FacesServlet in web.xml are routed to the FacesServlet, and only the FacesServlet provides the FacesContext.

In other words, instead of asking for the resource ("/mywebapp/prova.jsp"), you need to ask for the URL ("http:/mywebapp/faces/prova.jsp")

ty now it works