Sou iniciante em java e para aprender resolvi fazer um sistema de cadastro com struts e hibernate. Porém, ao criar a classe DAO, é gerada uma excessao.
onde que estou errando?
ai vão as classes:
JSP:<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ 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" %>
<!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>JPLincensing</title>
</head>
<body>
<html:form action="/addLicenca">
<table border="1">
<tr>
<td align="center" colspan="2" valign="top">
<h3>Computador</h3>
<html:select name="licencaForm" property="computadorCodigo" multiple="true" size="10" style="width:200px">
<html:optionsCollection property="computadores" value="computadorId" label="codigo"/>
</html:select>
</td>
</tr>
<tr>
<td><html:submit value="Inserir"/></td>
</tr>
</table>
</html:form>
</body>
</html>
package br.jpjornal.licensing.vo;
// Generated 22/03/2010 13:01:31 by Hibernate Tools 3.2.1.GA
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
public class Computador implements java.io.Serializable {
private Integer computadorId;
private Setor setor;
private String codigo;
private String marca;
private String modelo;
private Date arquisicao;
private Date garantia;
private String processador;
private String frequencia;
private String memoria;
private String hd;
private String driver;
private String driverTipo;
private Set usuarios = new HashSet(0);
private Set licencas = new HashSet(0);
public Computador() {
}
public Computador(Setor setor, String codigo, String marca, String modelo, Date arquisicao, Date garantia, String processador, String frequencia, String memoria, String hd, String driver, String driverTipo, Set usuarios, Set licencas) {
this.setor = setor;
this.codigo = codigo;
this.marca = marca;
this.modelo = modelo;
this.arquisicao = arquisicao;
this.garantia = garantia;
this.processador = processador;
this.frequencia = frequencia;
this.memoria = memoria;
this.hd = hd;
this.driver = driver;
this.driverTipo = driverTipo;
this.usuarios = usuarios;
this.licencas = licencas;
}
public Integer getComputadorId() {
return this.computadorId;
}
public void setComputadorId(Integer computadorId) {
this.computadorId = computadorId;
}
public Setor getSetor() {
return this.setor;
}
public void setSetor(Setor setor) {
this.setor = setor;
}
public String getCodigo() {
return this.codigo;
}
public void setCodigo(String codigo) {
this.codigo = codigo;
}
public String getMarca() {
return this.marca;
}
public void setMarca(String marca) {
this.marca = marca;
}
public String getModelo() {
return this.modelo;
}
public void setModelo(String modelo) {
this.modelo = modelo;
}
public Date getArquisicao() {
return this.arquisicao;
}
public void setArquisicao(Date arquisicao) {
this.arquisicao = arquisicao;
}
public Date getGarantia() {
return this.garantia;
}
public void setGarantia(Date garantia) {
this.garantia = garantia;
}
public String getProcessador() {
return this.processador;
}
public void setProcessador(String processador) {
this.processador = processador;
}
public String getFrequencia() {
return this.frequencia;
}
public void setFrequencia(String frequencia) {
this.frequencia = frequencia;
}
public String getMemoria() {
return this.memoria;
}
public void setMemoria(String memoria) {
this.memoria = memoria;
}
public String getHd() {
return this.hd;
}
public void setHd(String hd) {
this.hd = hd;
}
public String getDriver() {
return this.driver;
}
public void setDriver(String driver) {
this.driver = driver;
}
public String getDriverTipo() {
return this.driverTipo;
}
public void setDriverTipo(String driverTipo) {
this.driverTipo = driverTipo;
}
public Set getUsuarios() {
return this.usuarios;
}
public void setUsuarios(Set usuarios) {
this.usuarios = usuarios;
}
public Set getLicencas() {
return this.licencas;
}
public void setLicencas(Set licencas) {
this.licencas = licencas;
}
}
package br.jpjornal.licensing.dao;
import java.util.Collection;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import br.jpjornal.licensing.hibernate.HibernateUtil;
import br.jpjornal.licensing.vo.Computador;
public class ComputadorDAO {
private SessionFactory factory;
private Session session;
public ComputadorDAO() throws Exception {
this.factory = HibernateUtil.getSessionFactory();
this.session = factory.openSession();
}
public void insert(Computador computador) throws Exception {
Transaction transaction = session.beginTransaction();
session.save(computador);
transaction.commit();
}
public void delete(Computador computador) throws Exception {
Transaction transaction = session.beginTransaction();
session.delete(computador);
transaction.commit();
}
public void update(Computador computador) throws Exception {
Transaction transaction = session.beginTransaction();
session.update(computador);
transaction.commit();
}
public Collection list(String condicao) throws Exception {
Collection<Computador> computadores = null;
computadores = session.createQuery(condicao).list();
return computadores;
}
public Collection getCollection(String condicao) throws Exception {
Collection computadores = session.createQuery(condicao).list();
return computadores;
}
@Override
protected void finalize() throws Throwable {
super.finalize();
session.flush();
session.close();
}
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 22/03/2010 13:01:41 by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class catalog="licencas" name="br.jpjornal.licensing.hibernate.hbm.Computador" table="computador">
<id name="computadorId" type="java.lang.Integer">
<column name="computadorId"/>
<generator class="identity"/>
</id>
<many-to-one class="br.jpjornal.licensing.hibernate.hbm.Setor" fetch="select" name="setor">
<column name="setorId"/>
</many-to-one>
<property name="codigo" type="string">
<column length="8" name="codigo"/>
</property>
<property name="marca" type="string">
<column length="30" name="marca"/>
</property>
<property name="modelo" type="string">
<column length="20" name="modelo"/>
</property>
<property name="arquisicao" type="date">
<column length="10" name="arquisicao"/>
</property>
<property name="garantia" type="date">
<column length="10" name="garantia"/>
</property>
<property name="processador" type="string">
<column length="20" name="processador"/>
</property>
<property name="frequencia" type="string">
<column length="10" name="frequencia"/>
</property>
<property name="memoria" type="string">
<column length="10" name="memoria"/>
</property>
<property name="hd" type="string">
<column length="15" name="hd"/>
</property>
<property name="driver" type="string">
<column length="15" name="driver"/>
</property>
<property name="driverTipo" type="string">
<column length="5" name="driverTipo"/>
</property>
<set inverse="false" name="usuarios" table="computadorUsuario">
<key>
<column name="computadorId" not-null="true"/>
</key>
<many-to-many entity-name="br.jpjornal.licensing.hibernate.hbm.Usuario">
<column name="usuarioId" not-null="true"/>
</many-to-many>
</set>
<set inverse="false" name="licencas" table="computadorLicenca">
<key>
<column name="computadorId" not-null="true"/>
</key>
<many-to-many entity-name="br.jpjornal.licensing.hibernate.hbm.Licenca">
<column name="licencaId" not-null="true"/>
</many-to-many>
</set>
</class>
</hibernate-mapping>
