在应用程序中使用EntityManager

在persistence.xml文件中

<persistence-unit name="persistUnitName" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql:///jpa" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="123456" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<!—
<property name="hibernate.default_batch_fetch_size" value="1" />
<property name="hibernate.transaction.manager_lookup_class"
value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
-->
</properties>
</persistence-unit>

在java程序中:
public static void main(String[] args){
EntityManagerFactory emf = Persistence.createEntityManagerFactory("persistUnitName");
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
BaseDm dm=new BaseDm();
dm.setDmbh("123");
dm.setDm("a");
dm.setDmz("1");
em.persist(dm);
}

你可能感兴趣的:(java,Hibernate,xml,ejb)