salve a tutti,
ho un problema con i taglib di struts su java,da poco ho inizato ad usare questo framework e vorrei scorrere una lista di un Db mysql con il tag <logic:iterate> ma da sempre un problema del tipo
è verificata un'eccezione page trasformazione JSP / visualizza.jsp alla linea 19

la linea 19 e questa :
<logic:iterate name="InserimentoForm" id="dati" property="lista">

allego il semplice prog che sto facendo

spero che mi possiate chiarire questo problema.


la jsp della visualizzazione ;

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page import = "java.util.List, java.util.ArrayList, java.util.Iterator"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>




<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<table border="1" align="center" class="tbl-vista" bordercolor="#b49984" style="border-collapse:collapse">
<tr>

<logic:iterate name="InserimentoForm" id="dati" property="lista" >

<td>
<bean:write name="dati" property="id"/>
</td>

<td>
<bean:write name="dati" property="nome"/>
</td>

<td>
<bean:write name="dati" property="cognome"/>
</td>

<td>
<bean:write name="dati" property="residenza"/>
</td>

</logic:iterate>

</tr>

</table>
</body>
</html>

VisualizzazioniAction;

import java.io.IOException;
import java.sql.SQLException;
import java.util.List;


import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;


public class VisualizzaAction extends Action {

public ActionForward execute (ActionMapping mapping, ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException, SQLException, ClassNotFoundException {
if (form!= null ){


AnagraficaDao dao= new AnagraficaDao();
List<BeanAnagrafica> lista =null;
BeanAnagrafica bean = new BeanAnagrafica();
lista= dao.select();
bean.setLista(lista);

request.setAttribute("lista", lista);

return mapping.findForward("success");
}
else
{

return mapping.findForward("failure");
}
}
}



web.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" 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>Esercizio</display-name>

<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>home.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>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<listener>
<listener-class>it.mediaartex.listener.ContextListener</listener-class>
</listener>
<jsp-config>
<taglib>
<taglib-uri>/WEB.INF/struts-html.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location >
</taglib >
<taglib>
<taglib-uri>/WEB.INF/struts-bean.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location >
</taglib >
<taglib>
<taglib-uri>/WEB.INF/struts-logic.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-logic.tld</taglib-location >
</taglib >
</jsp-config >
</web-app>


struts_config;

<?xml version="1.0" encoding="ISO-8859-1" ?>




<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
"http://struts.apache.org/dtds/struts-config_1_3.dtd">








<struts-config>


<form-beans>

<form-bean
name="InserimentoForm"
type="it.mediaartex.actionForm.InserimentoForm"/>

</form-beans>

<form-beans>

<form-bean
name="InserimentoForm"
type="it.mediaartex.actionForm.InserimentoForm"/>

</form-beans>
<global-exceptions>

</global-exceptions>
<global-forwards>

<forward
name="inserisci"
path="/inserisci.do"/>

<forward
name="visualizza"
path="/visualizza.do"/>
</global-forwards>
<action-mappings>

<action path="/inserisci"
type="it.mediaartex.action.InserimentoAction"
name="InserimentoForm"
input="homepage.jsp"
validate="true"
scope="request">

<forward name="success" path="/page/ok.jsp" />
<forward name="failure" path="/home.jsp" />
</action>

<action path="/visualizza"
type="it.mediaartex.action.VisualizzaAction"
name="InserimentoForm"
input="homepage.jsp"
validate="false"
scope="session">

<forward name="success" path="/visualizza.jsp" />
<forward name="failure" path="/errore.jsp" />
</action>


</action-mappings>
</struts-config>



grazie mille!!!!!!!