Я думаю, что это очень распространенная проблема для всех новичков, таких как я. Но я не мог найти решение. Тем не менее.
Файл persistence.xml находится в src/META-INF/persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="jobs">
<!-- provedor/implementacao do JPA -->
<provider>org.hibernate.ejb.HibernatePersistenceProvider</provider>
<!-- entidade mapeada -->
<class>
br.com.caelum.tarefas.modelo.Job
</class>
<properties>
<!-- dados da conexao -->
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost/fj21" />
<property name="javax.persistence.jdbc.user" value="root" />
<property name="javax.persistence.jdbc.password" value="root" />
<!-- propriedades do hibernate -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<!-- atualiza o banco, gera as tabelas se for preciso -->
<property name="hibernate.hbm2ddl.auto" value="update" />
</properties>
</persistence-unit>
Когда я запускаю код
try
{
EntityManagerFactory factory = Persistence.createEntityManagerFactory("tarefas");
EntityManager manager = factory.createEntityManager();
manager.close();
factory.close();
System.out.println("Execução com sucesso!");
}catch(Exception _Ex)
{
System.out.println("Erro: " + _Ex.getMessage());
}
Я получаю сообщение
27/03/2014 11:35:18 org.hibernate.ejb.HibernatePersistence logDeprecation WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
27/03/2014 11:35:18 org.hibernate.ejb.HibernatePersistence logDeprecation WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
27/03/2014 11:35:18 org.hibernate.ejb.HibernatePersistence logDeprecation WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
Erro: No Persistence provider for EntityManager named jobs
Что я делаю неправильно?