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Problemas com myfaces

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Ao rodar um aplicativo aparece a seguinte mensagem:

19/03/2009 17:56:02 javax.faces.webapp._ErrorPageWriter handleThrowable

SEVERE: An exception occurred

javax.faces.FacesException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: com/sun/faces/taglib/jsf_core/ViewTag

at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:347)

at org.apache.myfaces.application.jsp.JspViewHandlerImpl.buildView(JspViewHandlerImpl.java:486)

at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:337)

at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)

at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)

at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)

at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)

at org.apache.myfaces.webapp.MyFacesServlet.service(MyFacesServlet.java:103)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)

at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)

at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)

at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)

at java.lang.Thread.run(Unknown Source)

Caused by: org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: com/sun/faces/taglib/jsf_core/ViewTag

at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)

at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)

at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)

at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)

at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:341)

… 26 more

Caused by: javax.servlet.ServletException: java.lang.NoClassDefFoundError: com/sun/faces/taglib/jsf_core/ViewTag

at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852)

at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)

at org.apache.jsp.principal_jsp._jspService(principal_jsp.java:108)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)

… 36 more

Caused by: java.lang.NoClassDefFoundError: com/sun/faces/taglib/jsf_core/ViewTag

at org.apache.jsp.principal_jsp._jspx_meth_f_005fview_005f0(principal_jsp.java:122)

at org.apache.jsp.principal_jsp._jspService(principal_jsp.java:97)

… 39 more

Caused by: java.lang.ClassNotFoundException: com.sun.faces.taglib.jsf_core.ViewTag

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)

at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:128)

at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:66)

at java.lang.ClassLoader.loadClassInternal(Unknown Source)

… 41 more

Segue abaixo o web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	
	<display-name>StoreConnector</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>
	
	<!-- Configurações JavaServer Faces -->
	<context-param>
		<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
		<param-value>client</param-value>
	</context-param>
	
	<context-param>
		<param-name>javax.faces.CONFIG_FILE</param-name>
		<param-value>/WEB-INF/faces-config.xml</param-value>
	</context-param>
	
	<listener>
		<!-- <listener-class>com.sun.faces.config.ConfigureListener</listener-class> -->
		<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
	</listener>
	
	<servlet>
		<servlet-name>Faces Servlet</servlet-name>
		<!-- <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> -->
		<servlet-class>org.apache.myfaces.webapp.MyFacesServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<servlet-mapping>
		<servlet-name>Faces Servlet</servlet-name>
		<url-pattern>*.jsf</url-pattern>
	</servlet-mapping>
	
	<!-- Configurações RichFaces -->
	<context-param>
		<param-name>org.richfaces.SKIN</param-name>
		<param-value>blueSky</param-value>
	</context-param>
	
	<context-param>
		<param-name>org.richfaces.VIEW_HANDLERS</param-name>
		<param-value>com.sun.facelets.FaceletViewHandler</param-value>
	</context-param>
	
	<filter>
		<display-name>RichFaces Filter</display-name>
		<filter-name>richfaces</filter-name>
		<filter-class>org.ajax4jsf.Filter</filter-class>
	</filter>
	
	<filter-mapping>
		<filter-name>richfaces</filter-name>
		<servlet-name>Faces Servlet</servlet-name>
		<dispatcher>REQUEST</dispatcher>
		<dispatcher>FORWARD</dispatcher>
		<dispatcher>INCLUDE</dispatcher>
	</filter-mapping>

</web-app>

Segue abaixo o arquivo faces-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE faces-config PUBLIC
	"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
	"http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>

	<managed-bean>
		<managed-bean-name>banco</managed-bean-name>
		<managed-bean-class>br.inf.sicon.model.Banco</managed-bean-class>
		<managed-bean-scope>session</managed-bean-scope>
	</managed-bean>
	
	<navigation-rule>
		<from-view-id>*</from-view-id>
		<navigation-case>
			<from-outcome>lojas</from-outcome>
			<to-view-id>/pesquisaloja.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>
	
	<navigation-rule>
		<from-view-id>/pesquisaloja.jsp</from-view-id>
		<navigation-case>
			<from-outcome>incluir</from-outcome>
			<to-view-id>/incluiloja.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>
	
</faces-config>

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