Como carregar uma list dentro de uma JSP

JavaTeenager Membro desde: 28/03/2007 14:28:11 Mensagens: 185 Offline

Prezados amigos, preciso da sabedoria de vocês.

package controle;

import java.util.ArrayList;
import java.util.List;
import javax.faces.context.FacesContext;
import javax.servlet.ServletContext;
import modelo.Login;

/**
 *
 * @author andre.silva
 */
public class LoginAction {
    
    private Login login = new Login();
    
    private List<Login> lista;
    
    public String passouAqui(){
        //ServletContext context = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();
        //HttpServletRequest resp = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
        
        System.err.println("##################### Passou aqui "+getLogin().getUsuario()+"  "+getLogin().getSenha());
        ServletContext context = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();
        
        if(login.getSenha().equals("") || login.getUsuario().equals("")){
            return "error";
        }
        
        lista = (List<Login>) context.getAttribute("lista");
        
        if(lista==null)
            lista = new ArrayList<Login>();           
        
        lista.add(login);
        
        context.setAttribute("lista", lista);
        return "sucesso";
                
    }
    
    public List<Login> carregaLista(){
        ServletContext context = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();
        return (List<Login>) context.getAttribute("lista");
    }

public Login getLogin() {
        return login;
    }

public void setLogin(Login login) {
        this.login = login;
    }

public List<Login> getLista() {
        return lista;
    }

public void setLista(List<Login> lista) {
        this.lista = lista;
    }
}

E essa JSP:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>

<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<%--
    This file is an entry point for JavaServer Faces application.
--%>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Aplicação de Teste</title>
    </head>
    <body>
        <f:view>
            <h:form id="form">
                <h1 align="center"><h:outputText style="color:red" value="Aplicação de Teste" /></h1>
                <table>
                    <tr>
                        <td> <h4> <h:outputLabel value="Login:"/> </h4> </td>
                        <td> <h:inputText id="login" title="login" value="#{loginAction.login.usuario}" /> </td>
                    </tr>
                    <tr>
                        <td> <h4> <h:outputLabel value="Senha:"/> </h4> </td>
                        <td> <h:inputSecret id="senha" title="senha" value="#{loginAction.login.senha}" /> </td>
                    </tr>
                </table>
                <h:commandButton id="ok" title="ok" value="OK" action="#{loginAction.passouAqui}"/>                      
                
                <h:outputLink value="listarusuarios.jsp">
                    <f:verbatim>Listar Usuários</f:verbatim>
                </h:outputLink>
            </h:form>
        </f:view>
    </body>
</html>

E esta outra JSP:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>

<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<!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>JSP Page</title>
    </head>
    <body>
        <f:view>
            <h:form>
                <h:dataTable var="login" [color=red]value="#{loginAction.lista}"[/color] border="1">
                    <h:column>
                        <f:facet name="header">
                            <h:outputText value="Login"/>
                        </f:facet>
                        <h:outputText value="#{login.usuario}"></h:outputText>
                    </h:column>
                    <h:column>
                        <f:facet name="header">
                            <h:outputText value="Senha"/>
                        </f:facet>
                        <h:outputText value="#{login.senha}"></h:outputText>
                    </h:column>
                </h:dataTable>
                <h:outputLink value="welcomeJSF.jsp">
                    <f:verbatim>Voltar</f:verbatim>
                </h:outputLink>
            </h:form>
        </f:view>
    </body>
</html>

Como faço para exibir a lista onde está em vermelho usando o método carregaLista().

Obrigado!

JavaTeenager Membro desde: 28/03/2007 14:28:11 Mensagens: 185 Offline

Alguém?

Notícias, artigos e o maior fórum brasileiro sobre Java