Estou tentando passar os dados do tipo Contato de uma Servlet para um JSP porem estou não sei o que pode esta errado
Primeiro eu listo os contatos que estao no bd:
public class ListaContatosLogic implements Logica{
@Override
public String executa(HttpServletRequest req, HttpServletResponse res)
throws Exception {
List<Contato> contatos = new ContatoDao().getLista();
req.setAttribute("contatos", contatos);
return "/WEB-INF/jsp/lista-contatos.jsp";
}
}
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Lista</title>
</head>
<body>
<c:import url="cabecalho.jsp"/>
<!-- Criando o DAO -->
<!-- <jsp:useBean id="dao" class="br.com.caelum.dao.ContatoDao"/>
Como instanciar classe pelo JSP
-->
<table>
<!-- percorre contatos montando as linhas na tabela -->
<c:forEach var="contato" items="${contatos}" varStatus="id">
<tr bgcolor="#${id.count % 2 == 0 ? 'aaee88' : 'ffffff' }" >
<td>${id.count}</td>
<td>${contato.id}</td>
<td>${contato.nome}</td>
<td>
<c:choose>
<c:when test="${not empty contato.email}">
<a href="mailto:${contato.email}">${contato.email}</a>
</c:when>
<c:otherwise>
Email não informado
</c:otherwise>
</c:choose>
</td>
<td>${contato.endereco}</td>
<td><fmt:formatDate value="${contato.dataNascimento.time}" pattern="dd/MM/yyyy"/></td>
<td>
<a href="mvc?logica=RemoveContatoLogic&id=${contato.id}">Remover</a>
</td>
<td>
<a href="mvc?logica=MostrarContatoLogic&id=${contato.id}&nome=${contato.nome}&
endereco=${contato.endereco}&email=${contato.email}&dataNascimento=${contato.dataNascimento}">Editar</a>
</td>
</tr>
</c:forEach>
</table>
<a href="adiciona-contato.jsp">Adicionar</a>
<c:import url="rodape.jsp"/>
</body>
</html>
Quando clico em Editar, o JSP repassa para a Servlet MostrarContatoLogic os dados que estavam na lista e ele monta um Contato para passar para um outro JSP para que se possa ser editado:
public class MostrarContatoLogic implements Logica{
@Override
public String executa(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
PrintWriter out = res.getWriter();
long id = Long.parseLong(req.getParameter("id"));
String nome = req.getParameter("nome");
String email = req.getParameter("email");
String endereco = req.getParameter("endereco");
String dataEmTexto = req.getParameter("dataNascimento");
System.out.println(dataEmTexto);
Calendar dataNascimento = null;
try {
Date date = new SimpleDateFormat("dd/MM/yyyy").parse(dataEmTexto);
dataNascimento = Calendar.getInstance();
dataNascimento.setTime(date);
} catch (ParseException e) {
out.println("Erro na conversão da data");
}
Contato contato = new Contato();
contato.setNome(nome);
contato.setEmail(email);
contato.setEndereco(endereco);
contato.setDataNascimento(dataNascimento);
System.out.println(contato.getNome());
System.out.println("Data: " + contato.getDataNascimento());
req.setAttribute("contato", contato);
return "altera-contato.jsp";
}
}
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib tagdir="/WEB-INF/tags" prefix="caelum" %>
<html>
<body>
<head>
<link href="js/jquery-ui.css" rel="stylesheet">
<script src="js/jquery.js"></script>
<script src="js/jquery-ui.js"></script>
</head>
<body>
<c:import url="cabecalho.jsp"/>
<c:forEach var="contato" items="${contatos}">
<!-- <form action="adicionaContato" method="POST"> -->
<form action="mvc?logica=AlteraContatoLogic" method="POST">
Nome: <input type="text" name="nome" value=""/><br/>
Email: <input type="text" name="email" /><br/>
Endereço: <input type="text" name="endereco" /><br/>
DataNascimento <caelum:campoData id="dataNascimento" /><br/>
</form>
</c:forEach>
<input type="submit" value="Alterar" />
<c:import url="rodape.jsp"/>
</body>
</html>
O problema todo esta quando chamo o items no JSP:
<c:forEach var="contato" items="${contatos}">
Ele me gera um erro:
GRAVE: Servlet.service() for servlet [br.com.caelum.mvc.servlet.ControllerServlet] in context with path [/Agenda] threw exception [A lógica de negócios causou uma exceção] with root cause
javax.servlet.jsp.JspTagException: Don't know how to iterate over supplied "items" in <forEach>
at org.apache.taglibs.standard.tag.common.core.ForEachSupport.toForEachIterator(ForEachSupport.java:312)
at org.apache.taglibs.standard.tag.common.core.ForEachSupport.supportedTypeForEachIterator(ForEachSupport.java:276)
at org.apache.taglibs.standard.tag.common.core.ForEachSupport.prepare(ForEachSupport.java:193)
at javax.servlet.jsp.jstl.core.LoopTagSupport.doStartTag(LoopTagSupport.java:291)
at org.apache.jsp.altera_002dcontato_jsp._jspx_meth_c_005fforEach_005f0(altera_002dcontato_jsp.java:161)
at org.apache.jsp.altera_002dcontato_jsp._jspService(altera_002dcontato_jsp.java:91)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:405)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:349)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:721)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:466)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:391)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:318)
at br.com.caelum.mvc.servlet.ControllerServlet.service(ControllerServlet.java:26)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
req.setAttribute("contato", contato);