Problema com strtus

Assuntos Gerais
#1

struts.xml

    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
   <constant name="struts.objectFactory" value="spring"/>
   <constant name="struts.devMode" value="true"/>

   <package name="default" extends="struts-default">
   <action name="doFirstAction" class="br.com.struts2.actions.MyFirstAction">
        <result>/firstaction.jsp</result>
   </action>

    </package>

Mensagem de erro
br.com.struts2.actions.MyFirstAction.index()

#2

Olá, tem uma configuração default aqui do struts.xml

<?xml version="1.0" encoding="UTF-8"?> /jsp/index.jsp /jsp/index.jsp /jsp/helloWorld.jsp

no web.xml fica desse jeito

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

<display-name>Struts 2 - Maven Archetype - Starter</display-name>

<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>classpath*:applicationContext*.xml</param-value>
</context-param>

<!-- Filters -->
<filter>
    <filter-name>action2-cleanup</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
</filter>
<filter>
    <filter-name>sitemesh</filter-name>
    <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
<filter>
    <filter-name>action2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>

<filter-mapping>
    <filter-name>action2-cleanup</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>sitemesh</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>action2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<!-- Listeners -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>


<!-- Servlets -->
<servlet>
    <servlet-name>dwr</servlet-name>
    <servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>
    <init-param>
        <param-name>debug</param-name>
        <param-value>true</param-value>
    </init-param>
</servlet>
<servlet>
	<servlet-name>jspSupportServlet</servlet-name>
	<servlet-class>org.apache.struts2.views.JspSupportServlet</servlet-class>
	<load-on-startup>5</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>dwr</servlet-name>
    <url-pattern>/dwr/*</url-pattern>
</servlet-mapping>


<!-- Welcome file lists -->
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.jsp</welcome-file>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>

Espero ter te ajudado,
Abraços

#3