Problemas com Struts

Front-end
#1

Fala galera, blz?

Estou tentando criar um HelloWorld em Struts, mas estou com problemas, esta dando NullPointer no form. Podem me ajudar? Seguem os códigos, não sei onde estou errando:

Form:


package org.apache.form;

import org.apache.struts.action.ActionForm;

public class HelloWorldForm extends ActionForm {
	
	private String message;

	public HelloWorldForm() {
		super();
		message = "";
	}
	
	public String getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}

}

Action:


package org.apache.action;

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;

import org.apache.form.HelloWorldForm;

public class HelloWorldAction extends Action {

	public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) throws Exception {
		HelloWorldForm helloWorldForm = (HelloWorldForm) form;
		helloWorldForm.setMessage("Hello World! Struts");
		return mapping.findForward("success");
	}
	
}

web.xml:

[code]

ExemploStruts action org.apache.struts.action.ActionServlet config /WEB-INF/struts-config.xml 2 action *.do index.jsp [/code]

struts-config:

[code]

<?xml version="1.0" encoding="UTF-8"?> [/code]

jsp:

[code]

<%@taglib uri=“http://struts.apache.org/tags-bean” prefix=“bean”%>

Redirecionado

[/code]

Após acessar o http://http://localhost:8080/ExemploStruts/helloWorld.do aparece Http 500:

javax.servlet.ServletException: java.lang.NullPointerException
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:286)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

java.lang.NullPointerException
org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:357)
org.apache.struts.chain.commands.CreateActionForm.execute(CreateActionForm.java:92)
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

Alguma idéia?

Valeu galera.

#2