Notas de Rua: 01/12/2007

20 de dez. de 2007

Quem quer dinheiro???

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12 de dez. de 2007

Curso Struts - Aula 03

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tiles-defs.xml

<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE tiles-definitions PUBLIC  
        "-//Apache Software Foundation//DTD Tiles Configuration 1.3//EN"  
        "http://struts.apache.org/dtds/tiles-config_1_3.dtd">

<tiles-definitions>
 <definition name="homepage" template="/jsp/layouts/layout.jsp">
  <put name="title" value="Livraria Web" />
  <put name="header" value="/jsp/layouts/banner.jsp" />
  <put name="menu" value="/jsp/layouts/common_menu.jsp" />
  <put name="body" value="/jsp/layouts/home_body.jsp" />
  <put name="footer" value="/jsp/layouts/credits.jsp" />
 </definition>

 <!-- Livros -->
 <definition name="listarLivros" extends="homepage">
  <put name="body" value="/jsp/livro/listar.jsp" />
 </definition>

 <definition name="formularioLivros" extends="homepage">
  <put name="body" value="/jsp/livro/criar.jsp" />
 </definition>

 <!-- Usuarios -->
 <definition name="listarUsuarios" extends="homepage">
  <put name="body" value="/jsp/usuario/listar.jsp" />
 </definition>

 <definition name="formularioUsuarios" extends="homepage">
  <put name="body" value="/jsp/usuario/formulario.jsp" />
 </definition>

 <!-- Login -->
 <definition name="loginUsuario" extends="homepage">
  <put name="body" value="/jsp/login/login.jsp" />
 </definition>
</tiles-definitions>

/jsp/layouts/layout.jsp

<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>
<head>
  <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
  <title><tiles:getAsString name="title" /></title>
  <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/stylesheets/scaffold.css"/>

</head>
<body>
    <div id="page">
        <div id="header">
         <tiles:insert name="header" />
        </div>
        <hr class="hidden" />
      <div id="main">
        <div id="content-wrapper">
          <div id="content">
             <tiles:insert name="body" />
          </div>
        </div>
        <div id="sidebar-wrapper">
         <tiles:insert name="menu" />
        </div>
      </div>
        <hr class="hidden" />
        <div id="footer">
         <tiles:insert name="footer" />
        </div>
    </div>
  </body>
</html>

struts-config.xml

<?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>

 <!-- Definicao dos Formulario de Beans -->
 <form-beans>
  <form-bean name="livroForm"
   type="br.com.livrariaweb.controle.LivroForm" />
  <form-bean name="usuarioForm"
   type="br.com.livrariaweb.controle.UsuarioForm" />
 </form-beans>

 <!-- Definicao de Excecoes Globais -->
 <global-exceptions></global-exceptions>

 <!-- Definicao de Redirecionamento Global -->
 <global-forwards>
  <forward name="homepage" path="/homepage.do" />
 </global-forwards>

 <!-- Mapeamento de Acoes -->
 <action-mappings>

  <action path="/homepage"
   type="br.com.livrariaweb.controle.HomeAction">
   <forward name="homepage" path="homepage" />
  </action>

  <!-- Cadastro de Livros -->
  <action path="/formularioLivros" forward="formularioLivros" />

  <action path="/salvarLivro"
   type="br.com.livrariaweb.controle.LivroSalvarAction" name="livroForm"
   scope="request" input="formularioLivros">
   <forward name="listar" path="/listarLivros.do"
    redirect="true" />
  </action>

  <action path="/listarLivros"
   type="br.com.livrariaweb.controle.LivroAction">
   <forward name="listar" path="listarLivros" />
  </action>

  <!-- Cadastro de Usuários -->
  <action path="/formularioUsuarios" forward="formularioUsuarios" />

  <action path="/listarUsuarios"
   type="br.com.livrariaweb.controle.UsuarioAction" name="usuarioForm"
   scope="request" input="formularioUsuarios" parameter="metodo"
   validate="true">
   <forward name="listar" path="listarUsuarios" />
   <forward name="formulario" path="formularioUsuarios" />
  </action>

  <!-- Login e Logout -->
  <action path="/login" forward="loginUsuario" />

  <action path="/autenticar"
   type="br.com.livrariaweb.controle.LoginAction" name="usuarioForm"
   scope="request" input="loginUsuario" validate="true">
   <forward name="homepage" path="/homepage.do" />
  </action>

  <action path="/sair"
   type="br.com.livrariaweb.controle.LogoutAction" scope="request">
   <forward name="homepage" path="homepage" />
  </action>

  <!-- Comprar -->
  <action path="/comprar"
   type="br.com.livrariaweb.controle.ComprarAction">
   <forward name="homepage" path="homepage" />
  </action>
 </action-mappings>

 <!-- Arquivo de Definicao de Mensagens -->
 <message-resources parameter="mensagem" />

 <plug-in className="org.apache.struts.tiles.TilesPlugin">
  <set-property property="definitions-config"
   value="/WEB-INF/tiles-defs.xml" />
 </plug-in>

</struts-config>

9 de dez. de 2007

Curso Struts - Aula 02

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Para essa nova aula precisamos de uma nova biblioteca: struts-extras-1.3.8.jar br.com.livrariaweb.entidades.Usuario

package br.com.livrariaweb.entidades;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Usuario {

 @Id
 @GeneratedValue(strategy = GenerationType.AUTO)
 private Integer id;

 @Column(nullable = false)
 private String login;

 @Column(nullable = false)
 private String nome;

 @Column(nullable = false)
 private String senha;

       //gets e sets

br.com.livrariaweb.servico.UsuarioServico

package br.com.livrariaweb.servico;

import java.util.List;

import org.hibernate.Session;

import br.com.livrariaweb.entidades.Usuario;
import br.com.livrariaweb.util.HibernateUtil;

public class UsuarioServico {

 public List listar() {
  return HibernateUtil.getSession().createCriteria(Usuario.class).list();
 }

 public Usuario carregar(Integer id) {
  return (Usuario) HibernateUtil.getSession().load(Usuario.class, id);
 }

 public void salvar(Usuario usuario) {
  Session s = HibernateUtil.getSession();
  s.beginTransaction();
  if (usuario.getId() == 0)
   s.save(usuario);
  else
   s.update(usuario);
  s.getTransaction().commit();
  s.close();
 }

 public void excluir(Usuario usuario) {
  Session s = HibernateUtil.getSession();
  s.beginTransaction();
  s.delete(usuario);
  s.getTransaction().commit();
  s.close();
 }
}

br.com.livrariaweb.util.HibernateUtil

package br.com.livrariaweb.util;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;

public class HibernateUtil {

 private static final SessionFactory sessionFactory;

 static {
  try {
   // Criando a SessionFactory apartir no hibernate.cfg.xml
   sessionFactory = new AnnotationConfiguration().configure()
     .buildSessionFactory();
  } catch (Throwable ex) {
   System.err.println("Não foi possivel criar a SessionFactory." + ex);
   throw new ExceptionInInitializerError(ex);
  }
 }

 public static Session getSession() {
  return sessionFactory.openSession();
 }

}

hibernate.cfg.xml

<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>

 <session-factory>

       <!-- Database connection settings -->
       <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
       <property name="connection.url">jdbc:mysql://localhost/livrariaweb</property>
       <property name="connection.username">root</property>
       <property name="connection.password">root</property>
       <property name="connection.pool_size">1</property>

       <!-- SQL dialect -->
       <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

       <property name="show_sql">true</property>

       <property name="hbm2ddl.auto">update</property>

  <mapping class="br.com.livrariaweb.entidades.Livro"/>
  <mapping class="br.com.livrariaweb.entidades.Usuario"/>
  
 </session-factory>

</hibernate-configuration>

br.com.livrariaweb.controle.UsuarioAction

package br.com.livrariaweb.controle;

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

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import br.com.livrariaweb.entidades.Usuario;
import br.com.livrariaweb.servico.UsuarioServico;

public class UsuarioAction extends DispatchAction {

 private UsuarioServico servico = new UsuarioServico();

 public ActionForward listar(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  request.setAttribute("usuarios", servico.listar());

  return mapping.findForward("listar");
 }

 public ActionForward salvar(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  Usuario u = ((UsuarioForm) form).getUsuario();
  servico.salvar(u);

  request.setAttribute("usuarios", servico.listar());

  return mapping.findForward("listar");
 }

 public ActionForward carregar(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  Integer id = Integer.valueOf(request.getParameter("idUsuario"));
  Usuario u = servico.carregar(id);

  ((UsuarioForm) form).setUsuario(u);

  return mapping.findForward("formulario");
 }

 public ActionForward excluir(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  Integer id = Integer.valueOf(request.getParameter("idUsuario"));
  Usuario u = servico.carregar(id);
  servico.excluir(u);

  request.setAttribute("usuarios", servico.listar());

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

br.com.livrariaweb.controle.UsuarioForm

package br.com.livrariaweb.controle;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import br.com.livrariaweb.entidades.Usuario;

public class UsuarioForm extends ActionForm {

 private Usuario usuario = new Usuario();

 public Usuario getUsuario() {
  return usuario;
 }

 public void setUsuario(Usuario usuario) {
  this.usuario = usuario;
 }

 @Override
 public ActionErrors validate(ActionMapping mapping,
   HttpServletRequest request) {

  ActionErrors erros = new ActionErrors();
  if (usuario.getLogin() != null
    && usuario.getLogin().trim().length() == 0) {
   erros.add("usuario.login", new ActionMessage(
     "form.campoObrigatorio", "Login"));
  }
  if (usuario.getNome() != null && usuario.getNome().trim().length() == 0) {
   erros.add("usuario.nome", new ActionMessage(
     "form.campoObrigatorio", "Nome"));
  }
  if (usuario.getSenha() != null
    && usuario.getSenha().length() == 0) {
   erros.add("usuario.senha", new ActionMessage(
     "form.campoObrigatorio", "Senha"));
  }
  return erros;
 }

}

mensagem.properties

form.campoObrigatorio={0}: Campo Obrigatório
form.salvar=salvar

struts-config.xml

<?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>

 <!-- Definicao dos Formulario de Beans -->
 <form-beans>
  <form-bean name="livroForm"
   type="br.com.livrariaweb.controle.LivroForm" />
  <form-bean name="usuarioForm"
   type="br.com.livrariaweb.controle.UsuarioForm" />
 </form-beans>

 <!-- Definicao de Excecoes Globais -->
 <global-exceptions></global-exceptions>

 <!-- Definicao de Redirecionamento Global -->
 <global-forwards>
  <forward name="inicio" path="/Inicio.do" />
 </global-forwards>

 <!-- Mapeamento de Acoes -->
 <action-mappings>
  <action path="/Inicio" forward="/jsp/inicio.jsp" />

  <action path="/Livros"
   type="br.com.livrariaweb.controle.LivroAction">
   <forward name="listar" path="/jsp/livro/listar.jsp" />
  </action>

  <action path="/LivroSalvar"
   type="br.com.livrariaweb.controle.LivroSalvarAction" name="livroForm"
   scope="request" input="/jsp/livro/criar.jsp">
   <forward name="listar" path="/Livros.do" redirect="true" />
  </action>

  <action path="/usuario"
   type="br.com.livrariaweb.controle.UsuarioAction" name="usuarioForm"
   scope="request" input="/jsp/usuario/formulario.jsp"
   parameter="metodo" validate="true">
   <forward name="listar" path="/jsp/usuario/listar.jsp" />
   <forward name="formulario" path="/jsp/usuario/formulario.jsp" />
  </action>

 </action-mappings>

 <!-- Arquivo de Definicao de Mensagens -->
 <message-resources parameter="mensagem" />

</struts-config>

jsp/usuario/listar.jsp

<%@ 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"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>

<html:html>
<body>
<h1>Usuário</h1>
<table border="1" cellpadding="1">
 <tr>
  <th>Login</th>
  <th>Nome</th>
  <th>Senha</th>
 </tr>
 <logic:iterate id="u" name="usuarios">
  <tr>
   <td><bean:write name="u" property="login" /></td>
   <td><bean:write name="u" property="nome" /></td>
   <td><bean:write name="u" property="senha" /></td>
   <td><html:link action="/usuario.do">
    Editar
    <html:param name="idUsuario">
     <bean:write name="u" property="id" />
    </html:param>
    <html:param name="metodo">carregar</html:param>
   </html:link></td>
   <td><html:link action="/usuario.do">
    Excluir
    <html:param name="idUsuario">
     <bean:write name="u" property="id" />
    </html:param>
    <html:param name="metodo">excluir</html:param>
   </html:link></td>
  </tr>
 </logic:iterate>
</table>
<p><html:link href="jsp/usuario/formulario.jsp">Novo Usuário</html:link></p>
</body>
</html:html>

jsp/usuario/formulario.jsp

<%@ 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"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>

<html:html>
<body>
<h3 style="color: red;">
 <html:messages id="erro">
  <li><bean:write name="erro" /></li>
 </html:messages>
</h3>
<html:form action="/usuario.do" focus="usuario.login">
 <logic:present name="usuario">
  <h1>Editar Usuário</h1>
 </logic:present>
 <logic:notPresent name="usuario">
  <h1>Criar Usuário</h1>
 </logic:notPresent>
 <html:hidden property="usuario.id" />
 <p><b>Login:</b><br>
 <html:text property="usuario.login" /></p>
 <p><b>Nome:</b><br>
 <html:text property="usuario.nome" /></p>
 <p><b>Senha:</b><br>
 <html:password property="usuario.senha" /></p>

 <html:submit property="metodo">
  <bean:message key="form.salvar"/>
 </html:submit>
</html:form>
</body>
</html:html>

2 de dez. de 2007

Curso Struts - Aula 01

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LivroAction.java

package br.com.livrariaweb.controle;

import java.util.List;

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 br.com.livrariaweb.entidades.Livro;
import br.com.livrariaweb.servico.LivroServico;

public class LivroAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form,
  HttpServletRequest request, HttpServletResponse response)
  throws Exception {

 LivroServico servico = new LivroServico();
 List l = servico.listar();
 request.setAttribute("livros", l);
 return mapping.findForward("listar");
}
}

LivroAction.java

package br.com.livrariaweb.controle;

import org.apache.struts.action.ActionForm;

public class LivroForm extends ActionForm{

private static final long serialVersionUID = 1L;

private Integer id;

private String titulo;

private String autor;

private Integer nroEdicao;

private Double valor;

       // gets e sets
}

LivroSalvarAction.java

package br.com.livrariaweb.controle;

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

import org.apache.commons.beanutils.BeanUtils;
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 br.com.livrariaweb.entidades.Livro;
import br.com.livrariaweb.servico.LivroServico;

public class LivroSalvarAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form,
  HttpServletRequest request, HttpServletResponse response)
  throws Exception {
 Livro l = new Livro();
 BeanUtils.copyProperties(l, (LivroForm) form);
 LivroServico s = new LivroServico();
 s.salvar(l);
 return mapping.findForward("listar");
}
}

LivroAction.java

package br.com.livrariaweb.entidades;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Livro implements Serializable {

private static final long serialVersionUID = 1L;

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;

private String titulo;

private String autor;

private Integer nroEdicao;

private Double valor;

       // gets e sets
}

LivroServico.java

package br.com.livrariaweb.servico;

import java.util.List;

import org.hibernate.Session;

import br.com.livrariaweb.entidades.Livro;
import br.com.livrariaweb.util.HibernateUtil;

public class LivroServico {

public Livro salvar(Livro livro) {
 Session s = HibernateUtil.getSessionFactory().openSession();
 s.beginTransaction();
 s.save(livro);
 s.getTransaction().commit();
 s.close();
 return livro;
}

@SuppressWarnings("unchecked")
public List listar() {
 Session s = HibernateUtil.getSessionFactory().openSession();
 s.beginTransaction();
 List l = s.createCriteria(Livro.class).list();
 s.getTransaction().commit();
 s.close();
 return l;
}
}

HibernateUtil.java

package br.com.livrariaweb.util;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static {
 try {
  // Criando a SessionFactory apartir no hibernate.cfg.xml
  sessionFactory = new AnnotationConfiguration().configure()
    .buildSessionFactory();
 } catch (Throwable ex) {
  System.err.println("Não foi possivel criar a SessionFactory." + ex);
  throw new ExceptionInInitializerError(ex);
 }
}

public static SessionFactory getSessionFactory() {
 return sessionFactory;
}

}

criar.jsp

<%@ 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"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>

<html:html>
<body>
<html:form action="/LivroSalvar.do" focus="titulo">
<h1>Criar Livro</h1>

<p><b>Título</b><br>
<html:text property="titulo"></html:text></p>
<p><b>Autor</b><br>
<html:text property="autor"></html:text></p>
<p><b>Número da Edição</b><br>
<html:text property="nroEdicao"></html:text></p>
<p><b>Valor</b><br>
<html:text property="valor"></html:text></p>
<html:submit>Salvar</html:submit>
</html:form>
</body>
</html:html>

listar.jsp

<%@ 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"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>

<html:html>
<body>
<h1>Livros</h1>
<table border="1" cellpadding="1">
<tr>
 <th>Titulo</th>
 <th>Autor</th>
 <th>Valor</th>
</tr>
<logic:iterate id="l" name="livros">
 <tr>
  <td><bean:write name="l" property="titulo" /></td>
  <td><bean:write name="l" property="autor" /></td>
  <td><bean:write name="l" property="valor" /></td>
 </tr>
</logic:iterate>
</table>
<p><html:link href="jsp/livro/criar.jsp" >Criar Livro</html:link></p>
</body>
</html:html>

inicio.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="ISO-8859-1"%>
<!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>Aplicacao Struts</title>
</head>
<body>
 Aplicacao Struts no Ar!
 <br>
 <a href="<%=request.getContextPath()%>/Livros.do">Livros</a>
</body>
</html>

index.jsp

<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<logic:redirect forward="inicio"/>

struts-config.xml

<?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>

<!-- Definicao dos Formulario de Beans -->
<form-beans>
 <form-bean name="livroForm"
  type="br.com.livrariaweb.controle.LivroForm" />
</form-beans>

<!-- Definicao de Excecoes Globais -->
<global-exceptions></global-exceptions>

<!-- Definicao de Redirecionamento Global -->
<global-forwards>
 <forward name="inicio" path="/Inicio.do" />
</global-forwards>

<!-- Mapeamento de Acoes -->
<action-mappings>
 <action path="/Inicio" forward="/jsp/inicio.jsp" />

 <action path="/Livros"
  type="br.com.livrariaweb.controle.LivroAction">
  <forward name="listar" path="/jsp/livro/listar.jsp" />
 </action>

 <action path="/LivroSalvar"
  type="br.com.livrariaweb.controle.LivroSalvarAction" name="livroForm"
  scope="request" input="/jsp/livro/criar.jsp">
  <forward name="listar" path="/Livros.do" redirect="true"/>
 </action>
</action-mappings>

<!-- Arquivo de Definicao de Mensagens -->
<message-resources parameter="MessageResources" />

</struts-config>

web.xml

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

<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
<display-name>Aplicacao Struts</display-name>

<!-- Configuracoes do Strtuts -->
<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>
 <load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
 <servlet-name>action</servlet-name>
 <url-pattern>*.do</url-pattern>
</servlet-mapping>

<!-- Pagina Inicial -->
<welcome-file-list>
 <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

Resposta ao comentário do Renan:
Renan, esse é um assunto que iremos tratar na próxima aula. Até agora as nossas classes de ação elas herdam de "Action" mas temos uma outra classe também do struts que é chamada de "DispatchAction". Essa nova classe permite implementarmos diversos métodos dentro de uma única classe de ação. A assinatura do método vai ser a mesma para o método "execute".
Por exemplo:

public final class UsuarioAction extends DispatchAction {
public ActionForward novo (ActionMapping mapping, ActionForm form, 
            HttpServletRequest request, HttpServletResponse response) 
            throws Exception { 
        // sua acao... 
    } 
 
public ActionForward salva (ActionMapping mapping, ActionForm form, 
            HttpServletRequest request, HttpServletResponse response) 
           throws Exception { 
        // // sua acao... 
    } 
 
    public ActionForward edita (ActionMapping mapping, ActionForm form, 
            HttpServletRequest request, HttpServletResponse response) 
            throws Exception { 
        // // sua acao... 
    } 
 
}

Só tem um detalhe o mapeamento da sua action vai precisar de mais um parametro, o "parameter":

<action path="/Usuario"
type="br.com.loteriaweb.controle.UsuarioAction"
name="usuarioForm"
scope="request"
input="/jsp/usuario/cria.jsp"
parameter="submit"/>

ele corresponde ao método que você vai acessar. Ou seja. no seu formulario vc precisa ter um campo hidden com nome de submit que informa a ação que será executada. Vc pode utilizar um javascript para controlar essa decisão. Não fico muito feliz quando tenho que utilizar javascript então na aula eu mostro uma dica boa.

1 de dez. de 2007

Struts – Aula01 – Tutorial de Configuração Básica

Configurando o ambiente

1. Copie e descompacte o eclipse-jee-europa-fall2-win32.zip no seu diretório de trabalho. http://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/20071103/eclipse-jee-europa-fall2-win32.zip 2. Copie e descompacte o apache-tomcat-5.5.25 em seu diretório de trabalho. http://mirrors.uol.com.br/pub/apache/tomcat/tomcat-5/v5.5.25/bin/apache-tomcat-5.5.25.zip 3. Copie e descompacte o struts-1.3.8 em seu diretório de trabalho. http://ftp.unicamp.br/pub/apache/struts/binaries/struts-1.3.8-all.zip

Configurando o Projeto

4. Inicie o eclipse e crie um novo projeto. File >> New >> Other >> Selecione Web >> Selecione >> Dynamic Web Project >> Next. Defina o nome do projeto e clique em Finish

5. Copie os arquivos abaixo para a pasta web\WEB-INF\lib do seu projeto struts-1.3.8\lib\antlr-2.7.2.jar struts-1.3.8\lib\commons-beanutils-1.7.0.jar struts-1.3.8\lib\commons-chain-1.1.jar struts-1.3.8\lib\commons-digester-1.8.jar struts-1.3.8\lib\commons-logging-1.0.4.jar struts-1.3.8\lib\commons-validator-1.3.1.jar struts-1.3.8\lib\oro-2.0.8.jar struts-1.3.8\lib\struts-core-1.3.8.jar struts-1.3.8\lib\struts-taglib-1.3.8.jar struts-1.3.8\lib\struts-tiles-1.3.8.jar

6. Crie o arquivo struts-config.xml em web\WEB-INF e insira o seguinte conteúdo: <?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-beans>  <global-exceptions></global-exceptions>  <global-forwards> <forward name="inicio" path="/Inicio.do"/> </global-forwards>  <action-mappings> <action path="/Inicio" forward="/jsp/inicio.jsp"/> </action-mappings>  <message-resources parameter="MessageResources" /> </struts-config>

7. Altere o arquivo web\WEB-INF\web.xml para que fique com as configurações do struts: <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> <web-app> <display-name>Aplicacao Struts</display-name>  <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> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>action</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping>  <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>

8. Crie o arquivo web\index.jsp com o seguinte conteúdo: <%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %> <logic:redirect forward="inicio"/>

9. Crie o arquivo web\jsp\index.jsp com o seguinte conteúdo: <%@ 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> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Aplicacao Struts</title> </head> <body> Aplicacao Struts no Ar! </body> </html>

Executando

10. Selecione o projeto, no menu superior clique em Run >> Run As >> Run on Server Configure o TomCat indicando o local onde foi descompactado e execute a aplicação. Acesse o browser em HTTP://localhost:8080/seuprojeto/

Notas de Rua

20 de dez. de 2007

Quem quer dinheiro???

12 de dez. de 2007

Curso Struts - Aula 03

9 de dez. de 2007

Curso Struts - Aula 02

2 de dez. de 2007

Curso Struts - Aula 01

1 de dez. de 2007

Struts – Aula01 – Tutorial de Configuração Básica

Configurando o ambiente

Configurando o Projeto

Executando

Arquivo do blog

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