Apostila caelum

Programação Java
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#1

Pessoal estou estudando a apostila da Caelum de Java WEB. Mais chegou na parte de MVC que não entendi. Na apostila eles falaram para criar um pacote e criar uma interface com o nome de Logica com o metodo executa() e nas classes que criar dentro do pacote iria implementar a interface.

Depois disso eu crio uma Servlet que controla cada logicá e acesso cada uma através: /mvc?logica=NomeDaLogica.
Depois disso tem um exercícios para fazer de cadastrar um novo usuário e editar.
Só que não sei como eu passo os dados do formulário para a classe AdicionarContato que implementa o metodo executa. Em uma Servlet você coloco a action dela no FORM e informa se é um POST ou GET.
Como eu submeto o formulário a Classe Logica de Adicionar Contato?

Segue meu Formulário e a Classe de AdicionarContato:

Formulário:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
	<%@ taglib tagdir="/WEB-INF/tags" prefix="caelum" %>
	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
	<link href="resources/css/jquery.css" rel="stylesheet">
	<script src="resources/js/jquery.js"></script>
	<script src="resources/js/jquery-ui.js"></script>
<title>Insert title here</title>
</head>
<body>
	<c:import url="/cabecalho.jsp"/>
	
	<form action="mvc?logica=AdicionarContato"> ------> O que eu coloco aqui?
		  Nome: <input type="text" name="nome" /><br />
		  E-mail: <input type="text" name="email" /><br />
		  Endereço: <input type="text" name="endereco" /><br />
		  Data Nascimento: <caelum:campoData id="dataNascimento" /><br />
  		  <input type="submit" value="Gravar"/>
	</form>
	
	<c:import url="/rodape.jsp"/>
</body>
</html>

Classe AdicionarContato:

import java.sql.Connection;
import java.util.Calendar;

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

import br.com.caelum.jdbc.ConnectionFactory;
import br.com.caelum.jdbc.Dao.ContatoDao;
import br.com.caelum.jdbc.modelo.Contato;

public class AdicionarContato implements Logica {

	@Override
	public String executa(HttpServletRequest req, HttpServletResponse res) throws Exception {
		// TODO Auto-generated method stub
		
		Contato contato = new Contato();
		contato.setNome(req.getParameter("nome"));
		contato.setEmail(req.getParameter("email"));
		contato.setEndereco(req.getParameter("endereco"));
		contato.setDataNascimento(Calendar.getInstance());
		
		Connection connection = new ConnectionFactory().getConnection();
		
		
		ContatoDao dao = new ContatoDao(connection);
		dao.adiciona(contato);
		
		connection.close();
		
		return "/WEB-INF/jsp/lista-contato.jsp";
	}	
}
#2

Você pode usar get (não recomendado em forms)

<form action="mvc?logica=AdicionarContato">

Quando não se especifica o method no form, por padrão acaba sendo get…

Ou via post (recomendado em forms)

<form action="mvc" method="post">
    <input type="hidden" name="logica" value="AdicionarContato">
#3

Ohhh cara obrigado, não sabia que esse era o problema só coloquei o method=“post” e deu certo.

#4

@LostSoldier Beleza?
Estou continuando na apostila da caelum e cheguei na parte de Spring MVC, baixei todos os JARs que estão na apostila relacionados ao Spring, mas está dando o seguinte erro quando Starto o Tomcat, antes de adicionar as libs eu testei o Tomcat e funcionou normal, mas depois que coloquei ele começou a apresentar os erros e não starta.
Segue os erros: (se conseguir me ajudar a entender o problema ai agradeceria).

mai 08, 2017 1:29:56 PM org.apache.catalina.core.AprLifecycleListener init
INFORMAÇÕES: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.8.0_66\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jdk1.8.0_66/bin/../jre/bin/client;C:/Program Files/Java/jdk1.8.0_66/bin/../jre/bin;C:/Program Files/Java/jdk1.8.0_66/bin/../jre/lib/i386;C:\Program Files\Java\jdk1.8.0_66\bin;C:\ProgramData\Oracle\Java\javapath;C:\Program Files\Common Files\HIMSA Shared;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Windows Live\Shared;C:\Program Files\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files\MySQL\MySQL Server 5.1\bin;C:\Windows\system32\config\systemprofile\.dnx\bin;C:\Program Files\Microsoft DNX\Dnvm\;C:\Program Files\Microsoft SQL Server\120\Tools\Binn\;D:\DEV\server\apache-maven-3.3.9\\bin;C:\Program Files\Microsoft Visual Studio\Common\Tools\WinNT;C:\Program Files\Microsoft Visual Studio\Common\MSDev98\Bin;C:\Program Files\Microsoft Visual Studio\Common\Tools;C:\Program Files\Microsoft Visual Studio\VC98\bin;D:\eclipse;;.
mai 08, 2017 1:29:56 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
ADVERTÊNCIA: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:fj21-tarefas' did not find a matching property.
mai 08, 2017 1:29:56 PM org.apache.coyote.AbstractProtocol init
INFORMAÇÕES: Initializing ProtocolHandler ["http-bio-8080"]
mai 08, 2017 1:29:56 PM org.apache.coyote.AbstractProtocol init
INFORMAÇÕES: Initializing ProtocolHandler ["ajp-bio-8009"]
mai 08, 2017 1:29:56 PM org.apache.catalina.startup.Catalina load
INFORMAÇÕES: Initialization processed in 592 ms
mai 08, 2017 1:29:56 PM org.apache.catalina.core.StandardService startInternal
INFORMAÇÕES: Starting service Catalina
mai 08, 2017 1:29:56 PM org.apache.catalina.core.StandardEngine startInternal
INFORMAÇÕES: Starting Servlet Engine: Apache Tomcat/7.0.47
mai 08, 2017 1:29:57 PM org.apache.catalina.util.SessionIdGenerator createSecureRandom
INFORMAÇÕES: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [146] milliseconds.
mai 08, 2017 1:29:58 PM org.apache.catalina.core.ContainerBase startInternal
GRAVE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/fj21-tarefas]]
	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/fj21-tarefas]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
	... 6 more
Caused by: java.lang.NoClassDefFoundError: Lorg/apache/commons/logging/Log;
	at java.lang.Class.getDeclaredFields0(Native Method)
	at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
	at java.lang.Class.getDeclaredFields(Class.java:1916)
	at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)
	at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:263)
	at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:142)
	at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:67)
	at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:405)
	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:881)
	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 6 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.Log
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
	... 20 more

mai 08, 2017 1:29:58 PM org.apache.catalina.core.ContainerBase startInternal
GRAVE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:691)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 6 more

mai 08, 2017 1:29:58 PM org.apache.catalina.startup.Catalina start
GRAVE: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:691)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 9 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 11 more

mai 08, 2017 1:29:58 PM org.apache.coyote.AbstractProtocol pause
INFORMAÇÕES: Pausing ProtocolHandler ["http-bio-8080"]
mai 08, 2017 1:29:58 PM org.apache.coyote.AbstractProtocol pause
INFORMAÇÕES: Pausing ProtocolHandler ["ajp-bio-8009"]
mai 08, 2017 1:29:58 PM org.apache.catalina.core.StandardService stopInternal
INFORMAÇÕES: Stopping service Catalina
mai 08, 2017 1:29:58 PM org.apache.coyote.AbstractProtocol destroy
INFORMAÇÕES: Destroying ProtocolHandler ["http-bio-8080"]
mai 08, 2017 1:29:58 PM org.apache.coyote.AbstractProtocol destroy
INFORMAÇÕES: Destroying ProtocolHandler ["ajp-bio-8009"]