Não estou encontrando o problema de forma alguma, embora creia que o problema seja no mapeamento das classes, não vejo como esteja acontecendo.
Log do erro no prompt:
set 21, 2017 9:32:19 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.2.11.Final}
set 21, 2017 9:32:19 AM org.hibernate.cfg.Environment
INFO: HHH000205: Loaded properties from resource hibernate.properties: {hibernate.connection.driver_class=org.h2.Driver, hibernate.service.allow_crawling=false, hibernate.max_fetch_depth=5, hibernate.dialect=org.hibernate.dialect.H2Dialect, hibernate.format_sql=true, hibernate.generate_statistics=true, hibernate.connection.username=sa, hibernate.connection.url=jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;LOCK_TIMEOUT=10000, hibernate.bytecode.use_reflection_optimizer=false, hibernate.connection.password=<strong><strong>, hibernate.connection.pool_size=5}
set 21, 2017 9:32:19 AM org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity
WARN: HHH90000012: Recognized obsolete hibernate namespace <a href="http://hibernate.sourceforge.net/hibernate-configuration">http://hibernate.sourceforge.net/hibernate-configuration</a>. Use namespace <a href="http://www.hibernate.org/dtd/hibernate-configuration">http://www.hibernate.org/dtd/hibernate-configuration</a> instead. Support for obsolete DTD/XSD namespaces may be removed at any time.
set 21, 2017 9:32:19 AM org.hibernate.spatial.integration.SpatialService
INFO: HHH80000001: hibernate-spatial integration enabled : true
set 21, 2017 9:32:19 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
set 21, 2017 9:32:19 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
set 21, 2017 9:32:19 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost/locadora]
set 21, 2017 9:32:19 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=</strong></strong>}
set 21, 2017 9:32:19 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
set 21, 2017 9:32:19 AM org.hibernate.engine.jdbc.connections.internal.PooledConnections
INFO: HHH000115: Hibernate connection pool size: 5 (min=1)
Thu Sep 21 09:32:19 BRT 2017 WARN: Establishing SSL connection without server’s identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn’t set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to ‘false’. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
set 21, 2017 9:32:19 AM org.hibernate.dialect.Dialect
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect
set 21, 2017 9:32:19 AM org.hibernate.envers.boot.internal.EnversServiceImpl configure
INFO: Envers integration enabled? : true
Conectado!
set 21, 2017 9:32:20 AM org.hibernate.engine.internal.StatisticalLoggingSessionEventListener end
INFO: Session Metrics {
1652921 nanoseconds spent acquiring 1 JDBC connections;
1771486 nanoseconds spent releasing 1 JDBC connections;
0 nanoseconds spent preparing 0 JDBC statements;
0 nanoseconds spent executing 0 JDBC statements;
0 nanoseconds spent executing 0 JDBC batches;
0 nanoseconds spent performing 0 L2C puts;
0 nanoseconds spent performing 0 L2C hits;
0 nanoseconds spent performing 0 L2C misses;
0 nanoseconds spent executing 0 flushes (flushing a total of 0 entities and 0 collections);
0 nanoseconds spent executing 0 partial-flushes (flushing a total of 0 entities and 0 collections)
}
Script executado com sucesso.
Erro ao salvar categoria: Unknown entity: com.livro.capitulo3.categoria.Categoria
set 21, 2017 9:32:20 AM org.hibernate.engine.internal.StatisticalLoggingSessionEventListener end
INFO: Session Metrics {
1135999 nanoseconds spent acquiring 1 JDBC connections;
0 nanoseconds spent releasing 0 JDBC connections;
0 nanoseconds spent preparing 0 JDBC statements;
0 nanoseconds spent executing 0 JDBC statements;
0 nanoseconds spent executing 0 JDBC batches;
0 nanoseconds spent performing 0 L2C puts;
0 nanoseconds spent performing 0 L2C hits;
0 nanoseconds spent performing 0 L2C misses;
0 nanoseconds spent executing 0 flushes (flushing a total of 0 entities and 0 collections);
0 nanoseconds spent executing 0 partial-flushes (flushing a total of 0 entities and 0 collections)
}
Erro ao salvar categoria: Unknown entity: com.livro.capitulo3.categoria.Categoria
set 21, 2017 9:32:20 AM org.hibernate.engine.internal.StatisticalLoggingSessionEventListener end
INFO: Session Metrics {
1195486 nanoseconds spent acquiring 1 JDBC connections;
0 nanoseconds spent releasing 0 JDBC connections;
0 nanoseconds spent preparing 0 JDBC statements;
0 nanoseconds spent executing 0 JDBC statements;
0 nanoseconds spent executing 0 JDBC batches;
0 nanoseconds spent performing 0 L2C puts;
0 nanoseconds spent performing 0 L2C hits;
0 nanoseconds spent performing 0 L2C misses;
0 nanoseconds spent executing 0 flushes (flushing a total of 0 entities and 0 collections);
0 nanoseconds spent executing 0 partial-flushes (flushing a total of 0 entities and 0 collections)
}
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?> org.hibernate.dialect.MySQL5InnoDBDialect com.mysql.jdbc.Driver jdbc:mysql://localhost/locadora root 1234 thread 5 20 300 50 3000 true true true true<!-- Mapeando Classes -->
<mapping resource="com/livro/capitulo3/crudxml/Contato.hbm.xml" />
<mapping class="com.livro.capitulo3.categoria.Categoria" />
<mapping class="com.livro.capitulo3.cliente.Cliente" />
<mapping class="com.livro.capitulo3.endereco.Endereco" />
<mapping class="com.livro.capitulo3.filme.Filme" />
<mapping class="com.livro.capitulo3.locacao.Locacao" />
<mapping class="com.livro.capitulo3.midia.Midia" />
</session-factory>
Categoria.java
package com.livro.capitulo3.categoria;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import <a href="http://javax.persistence.Id">javax.persistence.Id</a>;
import javax.persistence.Table;
@Entity
@Table(name=“categoria”)
public class Categoria implements Serializable {
private static final long serialVersionUID = 3891458183159263624L;
@Id
@GeneratedValue
@Column(name="idCategoria")
private Integer categoria;
private String descricao;
public Integer getCategoria() {
return categoria;
}
public void setCategoria(Integer categoria) {
this.categoria = categoria;
}
public String getDescricao() {
return descricao;
}
public void setDescricao(String descricao) {
this.descricao = descricao;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((categoria == null) ? 0 : categoria.hashCode());
result = prime * result
+ ((descricao == null) ? 0 : descricao.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Categoria other = (Categoria) obj;
if (categoria == null) {
if (other.categoria != null)
return false;
} else if (!categoria.equals(other.categoria))
return false;
if (descricao == null) {
if (other.descricao != null)
return false;
} else if (!descricao.equals(other.descricao))
return false;
return true;
}
}
CategoriaDAO.java
package com.livro.capitulo3.categoria;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Restrictions;
import com.livro.capitulo3.conexao.ConectaDatabase;
public class CategoriaDAO {
private Session sessao;
private Transaction transaction;
public void salvar(Categoria categoria) {
try{
this.sessao = ConectaDatabase.getConexao().getCurrentSession();
this.transaction = this.sessao.beginTransaction();
this.sessao.save(categoria);
this.transaction.commit();
}catch(HibernateException e){
System.out.println("Erro ao salvar categoria: "+e.getMessage());
}finally{
try {
if(this.sessao.isOpen()){
this.sessao.close();
}
} catch (HibernateException e) {
System.out.println("Erro ao fechar sessão, salvar categoria "+e.getMessage());
}
}
}
public void excluir(Categoria categoria) {
try{
this.sessao = ConectaDatabase.getConexao().getCurrentSession();
this.transaction = this.sessao.beginTransaction();
this.sessao.delete(categoria);
this.transaction.commit();
}catch(HibernateException e){
System.out.println("Erro ao excluir categoria: "+e.getMessage());
}finally{
try {
if(this.sessao.isOpen()){
this.sessao.close();
}
} catch (HibernateException e) {
System.out.println("Erro ao fechar sessão, excluir categoria "+e.getMessage());
}
}
}
public void atualizar(Categoria categoria) {
try{
this.sessao = ConectaDatabase.getConexao().getCurrentSession();
this.transaction = this.sessao.beginTransaction();
this.sessao.update(categoria);
this.transaction.commit();
}catch(HibernateException e){
System.out.println("Erro ao atualizar categoria: "+e.getMessage());
}finally{
try {
if(this.sessao.isOpen()){
this.sessao.close();
}
} catch (HibernateException e) {
System.out.println("Erro ao fechar sessão, atualizar categoria "+e.getMessage());
}
}
}
public Categoria buscarCategoria(Integer id) {
Categoria categoria = null;
try{
this.sessao = ConectaDatabase.getConexao().getCurrentSession();
this.transaction = this.sessao.beginTransaction();
Criteria filtro = this.sessao.createCriteria(Categoria.class);
filtro.add(Restrictions.eq("categoria", id));
categoria = (Categoria) filtro.uniqueResult();
this.transaction.commit();
}catch(HibernateException e){
System.out.println("Erro ao busca por id categoria: "+e.getMessage());
System.out.println("Fazendo o rollback");
if(this.transaction.isActive()){
this.transaction.rollback();
}
}finally{
try {
if(this.sessao.isOpen()){
this.sessao.close();
}
} catch (HibernateException e) {
System.out.println("Erro ao fechar sessão, busca por id categoria "+e.getMessage());
}
}
return categoria;
}
@SuppressWarnings("unchecked")
public List<Categoria> listar() {
List<Categoria> categorias = null;
try{
this.sessao = ConectaDatabase.getConexao().getCurrentSession();
this.transaction = this.sessao.beginTransaction();
Criteria filtro = this.sessao.createCriteria(Categoria.class);
categorias = filtro.list();
this.transaction.commit();
}catch(HibernateException e){
System.out.println("Erro ao listar categoria: "+e.getMessage());
System.out.println("Fazendo o rollback");
if(this.transaction.isActive()){
this.transaction.rollback();
}
}finally{
try {
if(this.sessao.isOpen()){
this.sessao.close();
}
} catch (HibernateException e) {
System.out.println("Erro ao fechar sessão, listar categoria "+e.getMessage());
}
}
return categorias;
}
}