Dúvida - Apostila Caelum FJ21 - 9.8 - Exercícios: Lógica para alterar contatos[Resolvido]

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at br.com.caelum.mvc.servlet.ControllerServlet.service(ControllerServlet.java:22)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

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

package br.com.caelum.mvc.logica;

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

public interface Logica {
	
		void executa(HttpServletRequest req, HttpServletResponse res) throws Exception;

	}

package br.com.caelum.mvc.servlet;



import java.io.IOException;

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

import br.com.caelum.mvc.logica.Logica;


public class ControllerServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;
	
		@Override
		protected void service(HttpServletRequest request, HttpServletResponse response)
				throws ServletException, IOException {
					super.service(request, response);
			
			String parametro = request.getParameter("logica");
			String nomeDaClasse = "br.com.caelum.mvc.logica." + parametro;
			
			try {
				Class classe = Class.forName(nomeDaClasse);
				
				Logica logica = (Logica) classe.newInstance();
				logica.executa(request, response);
				
			} catch (Exception e) {
				throw new ServletException("A lógica de negócios causou uma exceção", e);
				
		}
	}
}

package br.com.caelum.mvc.logica;


import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

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



import br.com.caelum.jdbc.dao.ContatoDAO;
import br.com.caelum.jdbc.modelo.Contato;

public class AlteraContatoLogic implements Logica {

	@Override
	public void executa(HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		Contato contato = new Contato();
		long id = Long.parseLong(request.getParameter("id"));
		contato.setId(id);
		contato.setNome(request.getParameter("nome"));
		contato.setEndereco(request.getParameter("endereco"));
		contato.setEmail(request.getParameter("email"));
		
		//Converte a data de String para Calendar
		String dataEmTexto = request.getParameter("dataNascimento");
		Date date = new SimpleDateFormat("dd//MM/yyyy").parse(dataEmTexto);
		Calendar dataNascimento = Calendar.getInstance();
		dataNascimento.setTime(date);
		
		contato.setDataNascimento(dataNascimento);
		
		ContatoDAO dao = new ContatoDAO();
		dao.altera(contato);
		
		RequestDispatcher rd = request.getRequestDispatcher("/lista-contatos-elegante.jsp");
		rd.forward(request, response);
		System.out.println("Alterando contato ..." + contato.getNome());
		
		
	}
	
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws IOException, ServletException {

	}
}

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib tagdir="/WEB-INF/tags" prefix="caelum" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<c:import url="cabecalho.jsp" />

	Formulário para a alteração de contatos:<br/>
	
	<form action="mvc" method="POST">
		Id: <input type="text" name="id"/><br/>
		Nome: <input type="text" name="nome"/><br/>
		E-mail: <input type="text" name="email"/><br/>
		Endereço: <input type="text" name="endereco"/><br/>
		Data de Nascimento: <caelum:campoData id="dataNascimento" />
				<input type="hidden" name="logica" value="AlteraContatoLogic"/>
				<input type="submit" value="Enviar"/>
	</form>
	
<c:import url="rodape.jsp" />

<servlet>
  	<servlet-name>controlador</servlet-name>
  	<servlet-class>br.com.caelum.mvc.servlet.ControllerServlet</servlet-class>
  </servlet>
  
  <servlet-mapping>
  	<servlet-name>controlador</servlet-name>
  	<url-pattern>/mvc</url-pattern>
  </servlet-mapping>