Hibernate和Spring sessionFactory为空，未创建db

Question

我在尝试将Spring与Hibernate集成时遇到了一些问题。从日志中，表和数据库似乎已经创建，但我找不到数据库文件，在检查sessionFactory时，我得到了nullpointer异常，我无法真正理解发生了什么。

以下是我的配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>Fantacalcio</display-name>

<servlet>
    <servlet-name>spring-mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>spring-mvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring-database.xml,/WEB-INF/spring-mvc-servlet.xml</param-value>
</context-param>

null

<tx:annotation-driven />

<context:component-scan base-package="org.fabrizio.fantacalcio.controller"/>

<!-- Hibernate ..................................... -->
<beans:bean id="sessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <beans:property name="configLocation" value="classpath:hibernate.cfg.xml" />
</beans:bean>

<beans:bean id="transactionManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <beans:property name="sessionFactory" ref="sessionFactory" />
</beans:bean>


<!-- Miei Bean ...................................... --> 

<beans:bean id="utenteDao"
    class="org.fabrizio.fantacalcio.model.dao.UtenteDaoImpl"> 
</beans:bean>

@Repository
public class BaseDaoImpl<T> implements BaseDao<T> {

//  private static final Logger logger = LoggerFactory
//          .getLogger(BaseDaoImpl.class);

    @Autowired
    private SessionFactory sessionFactory;

    private Session getSession() {
        return sessionFactory.getCurrentSession();
    }

18/06/2015 11:20:49 - DEBUG - (StatisticsInitiator.java:110) - Statistics initialized [enabled=true]
18/06/2015 11:20:54 - DEBUG - (SessionFactoryImpl.java:1339) - HHH000031: Closing
18/06/2015 11:20:54 - DEBUG - (ActiveManagementCoordinator.java:149) - The mbean com.mchange.v2.c3p0:type=PooledDataSource,identityToken=2saucp9a1nmzsq198qnlq|1bdc6b2 was not found in the registry, so could not be unregistered.
18/06/2015 11:20:54 - DEBUG - (ActiveManagementCoordinator.java:97) - C3P0Registry mbean unregistered.
18/06/2015 11:20:54 - DEBUG - (BasicResourcePool.java:1022) - Preparing to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@9be45
18/06/2015 11:20:54 - DEBUG - (C3P0PooledConnectionPool.java:616) - Preparing to destroy PooledConnection: com.mchange.v2.c3p0.impl.NewPooledConnection@9be45
18/06/2015 11:20:54 - DEBUG - (AbstractPoolBackedDataSource.java:477) - com.mchange.v2.c3p0.PoolBackedDataSource@1bdc6b2 has been closed. 
java.lang.Exception: DEBUG STACK TRACE for PoolBackedDataSource.close().
    at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.close(AbstractPoolBackedDataSource.java:477)
    at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.close(AbstractPoolBackedDataSource.java:489)
    at com.mchange.v2.c3p0.DataSources.destroy(DataSources.java:372)
    at com.mchange.v2.c3p0.DataSources.destroy(DataSources.java:348)
    at org.hibernate.c3p0.internal.C3P0ConnectionProvider.stop(C3P0ConnectionProvider.java:258)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.stopService(AbstractServiceRegistryImpl.java:377)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.destroy(AbstractServiceRegistryImpl.java:361)
    at org.hibernate.cfg.Configuration$2.sessionFactoryClosed(Configuration.java:1924)
    at org.hibernate.internal.SessionFactoryObserverChain.sessionFactoryClosed(SessionFactoryObserverChain.java:65)
    at org.hibernate.internal.SessionFactoryImpl.close(SessionFactoryImpl.java:1376)
    at org.springframework.orm.hibernate4.LocalSessionFactoryBean.destroy(LocalSessionFactoryBean.java:488)
    at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:258)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:578)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:554)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:900)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:523)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:907)
    at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:908)
    at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:884)
    at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:836)
    at org.springframework.web.context.ContextLoader.closeWebApplicationContext(ContextLoader.java:579)
    at org.springframework.web.context.ContextLoaderListener.contextDestroyed(ContextLoaderListener.java:115)
    at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:5035)
    at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5687)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
    at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1591)
    at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1580)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
18/06/2015 11:20:54 - DEBUG - (NewPooledConnection.java:646) - com.mchange.v2.c3p0.impl.NewPooledConnection@9be45 closed by a client.
java.lang.Exception: DEBUG -- CLOSE BY CLIENT STACK TRACE
    at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:646)
    at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:259)
    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:619)
    at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1024)
    at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:1049)
    at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:1010)
    at com.mchange.v2.resourcepool.BasicResourcePool.access$100(BasicResourcePool.java:44)
    at com.mchange.v2.resourcepool.BasicResourcePool$5.run(BasicResourcePool.java:1260)
18/06/2015 11:20:54 - DEBUG - (C3P0PooledConnectionPool.java:627) - Successfully destroyed PooledConnection: com.mchange.v2.c3p0.impl.NewPooledConnection@9be45
18/06/2015 11:20:54 - DEBUG - (BasicResourcePool.java:1027) - Successfully destroyed resource: com.mchange.v2.c3p0.impl.NewPooledConnection@9be45
18/06/2015 11:20:54 - DEBUG - (BasicResourcePool.java:1022) - Preparing to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@532db4
18/06/2015 11:20:54 - DEBUG - (C3P0PooledConnectionPool.java:616) - Preparing to destroy PooledConnection: com.mchange.v2.c3p0.impl.NewPooledConnection@532db4
18/06/2015 11:20:54 - DEBUG - (BootstrapServiceRegistryImpl.java:308) - Implicitly destroying Boot-strap registry on de-registration of all child ServiceRegistries
18/06/2015 11:20:54 - DEBUG - (AbstractServiceRegistryImpl.java:406) - Implicitly destroying ServiceRegistry on de-registration of all child ServiceRegistries

编辑：这是UtenteDaoImpl类，它不做任何事情，因为它继承了BaseDao的东西。

@Repository
public class UtenteDaoImpl extends BaseDaoImpl<Utente> implements UtenteDao{

}

Answer 1

请将SessionFactory更改为protected。

@Autowired
protected SessionFactory sessionFactory;