我在用
- 春天 3.1.1
- JPA 2
- H2
- 休眠
在独立的 Java 应用程序中。当我运行应用程序时，事务被执行，当我查询数据时，数据被检索。但是关闭应用程序时不会保存数据。
请帮我。
这是弹簧配置，
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="persistenceXmlLocation" value="classpath*:META-INF/persistence.xml" />
</bean>
<bean id="sharedEntityManager"
class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven />
</beans>
持久性.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
version="1.0">
<persistence-unit name="sling">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>com.sling.data.Trend</class>
<class>com.sling.data.Gc</class>
<properties>
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.connection.driver_class" value="org.h2.Driver" />
<property name="hibernate.connection.url" value="jdbc:h2:sling;DB_CLOSE_DELAY=-1" />
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
</properties>
</persistence-unit>
</persistence>
DAO 类，
@Repository
public class GcDao {
@PersistenceContext
private EntityManager em;
public GcDao() {
}
@Transactional
public void add(Gc gc){
em.persist(gc);
}
@SuppressWarnings("unchecked")
@Transactional(readOnly = true)
public List<Gc> getGc(){
String queryText = " from Gc";
Query query = em.createQuery(queryText);
return query.getResultList();
}
}