henriquejhc:
Só com essa mensagem fica dificil imaginar o que pode estar errado.
Esperimenta colocar uma barra "/" antes do welcomeJSF.faces. Assim:
<jsp:forward page="/welcomeJSF.faces"/>
Se não conseguir resolver coloca o código do web.xml, o da tua página welcomeJSF.faces e o faces-config.xml.
Espero ter ajudado.
CODIGO web.xml
<?xml version=“1.0” encoding=“UTF-8”?>
<web-app version=“2.5” 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/web-app_2_5.xsd”>
<context-param>
<param-name>com.sun.faces.verifyObjects</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.validateXml</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<context-param>
<param-name>org.richfaces.SKIN</param-name>
<param-value>blueSky</param-value>
</context-param>
<context-param>
<param-name>org.richfaces.CONTROL_SKINNING</param-name>
<param-value>enable</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>
<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>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>forwardToJSF.jsp</welcome-file>
</welcome-file-list>
</web-app>
CODIGO PAGINA welcome
<%@page contentType=“text/html” pageEncoding=“UTF-8”%>
<%@taglib prefix=“f” uri=“http://java.sun.com/jsf/core”%>
<%@taglib prefix=“h” uri=“http://java.sun.com/jsf/html”%>
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”
“http://www.w3.org/TR/html4/loose.dtd”>
<html>
<head>
<meta http-equiv=“Content-Type” content=“text/html; charset=UTF-8”/>
<title>Cadastrar Secretaria</title>
</head>
<body>
<f:view>
<h:form>
<h:commandButton value="Confirmar"></h:commandButton>
<h:commandLink value="Teste"></h:commandLink>
</h:form>
</f:view>
CODIGO PAGINA TESTEJSF (Ao rodar essa pagina com os componentes jsf é que dar aquela mensagem de erro)
<%@page contentType=“text/html” pageEncoding=“UTF-8”%>
<%@taglib prefix=“f” uri=“http://java.sun.com/jsf/core”%>
<%@taglib prefix=“h” uri=“http://java.sun.com/jsf/html”%>
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”
“http://www.w3.org/TR/html4/loose.dtd”>
<html>
<head>
<meta http-equiv=“Content-Type” content=“text/html; charset=UTF-8”/>
<title>Cadastrar Secretaria</title>
</head>
<body>
<f:view>
<h:form>
<h:commandButton value="Confirmar"></h:commandButton>
<h:commandLink value="Teste"></h:commandLink>
</h:form>
</f:view>
CODIGO FACES CONFIG
<?xml version=‘1.0’ encoding=‘UTF-8’?>
<!-- =========== FULL CONFIGURATION FILE ================================== -->
<faces-config version=“1.2”
xmlns=“<a href="http://java.sun.com/xml/ns/javaee">http://java.sun.com/xml/ns/javaee</a>”
xmlns:xsi=“<a href="http://www.w3.org/2001/XMLSchema-instance">http://www.w3.org/2001/XMLSchema-instance</a>”
xsi:schemaLocation=“<a href="http://java.sun.com/xml/ns/javaee">http://java.sun.com/xml/ns/javaee</a> <a href="http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd</a>”>
<managed-bean>
<managed-bean-name>TestManager</managed-bean-name>
<managed-bean-class>secretaria.entidade.TestManager</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<managed-bean>
<managed-bean-name>SecretariaFace</managed-bean-name>
<managed-bean-class>secretaria.faces.SecretariaFace</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>