gente eu to migrando para java e ja to na parte da apostila que fala de taglib e jstl, antes de fazer esse exercicio, eu fiz com scriptlet e funciona normal. Os jar do jstl ja estao todos no projeto.
meu codigo do DAO
public List<ContatoBean> getLista(){
String sql = "select * from contatos";
try {
PreparedStatement pstm = conexao.prepareStatement(sql);
ResultSet rs = pstm.executeQuery();
List<ContatoBean> lista = new ArrayList<ContatoBean>();
while(rs.next()){
ContatoBean contato = new ContatoBean();
contato.setNome(rs.getString("con_nome"));
contato.setEmail(rs.getString("con_email"));
contato.setEndereco(rs.getString("con_endereco"));
//converter data
Calendar data = Calendar.getInstance();
data.setTime(rs.getDate("con_data"));
contato.setDataNascimentoCB(data);
lista.add(contato);
}
rs.close();
pstm.close();
return lista;
} catch (SQLException e) {
// TODO Auto-generated catch block
throw new RuntimeException(e);
}
}
bom abaixo minha jsp.
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ 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=ISO-8859-1">
<title>Lista de contatos</title>
</head>
<body>
<jsp:useBean id="dao" class="br.com.caelum.Dao.ContatoDao" />
<table>
<c:forEach var="listando" items="${dao.lista}">
<tr>
<td>${listando.nome}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
infelizmente quando vou no navegador não acessar. se der pra alguem me ajudar ia ficar muito feliz pois ja vi todos os topicos relacionados a isso e nao deu solução nenhuma a o erro gerado é este.
HTTP Status 500 - An exception occurred processing JSP page /lista-contato.jsp at line 15
type Exception report
message An exception occurred processing JSP page /lista-contato.jsp at line 15
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /lista-contato.jsp at line 15
12: <jsp:useBean id="dao" class="br.com.caelum.Dao.ContatoDao" />
13:
14: <table>
15: <c:forEach var="listando" items="${dao.lista}">
16: <tr>
17: <td>${listando.nome}</td>
18: </tr>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:580)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.apache.jasper.el.JspPropertyNotFoundException: /lista-contato.jsp(15,1) '${dao.lista}' Property 'lista' not found on type br.com.caelum.Dao.ContatoDao
org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:109)
org.apache.jsp.lista_002dcontato_jsp._jspx_meth_c_005fforEach_005f0(lista_002dcontato_jsp.java:145)
org.apache.jsp.lista_002dcontato_jsp._jspService(lista_002dcontato_jsp.java:106)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.78 logs.
