[英]Hibernate+Spring SessionFactory configuration
什么是配置SessionFactory的正確方法?
如果我這樣做:
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"
p:dataSource-ref="dataSource"
p:packagesToScan="ua.com.javer.flowerexpert"/>
<bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"
p:sessionFactory-ref="sessionFactory" />
我收到此錯誤:
nested exception is org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
如果我更改為AnnotationSessionFactoryBean
:
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
p:dataSource-ref="dataSource"
p:packagesToScan="ua.com.javer.flowerexpert"/>
我得到:
nested exception is java.lang.NoClassDefFoundError: [Lorg/hibernate/engine/FilterDefinition;
即使在某些較舊的項目中, hibernate3.annotation.AnnotationSessionFactoryBean
可以正常工作。
我的pom.xml
包含:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.0.1.Final</version>
<exclusions>
<exclusion>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.1.Final</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
這是我的服務班級:
@Service("colorsService")
@Transactional
public class ColorsService {
@Autowired
private ColorDao colorDao;
public List<Color> getAllColors() {
return colorDao.getAllColors();
}
}
這是DAO :
@Component
@Repository("colorDao")
public class ColorDaoHibernate implements ColorDao {
@Autowired
private SessionFactory sessionFactory;
public ColorDaoHibernate() {
}
@Override
public List<Color> getAllColors() {
Session session = sessionFactory.getCurrentSession();
// StatelessSession session = sessionFactory.openStatelessSession();
Query query = session.createQuery("FROM Color");
return query.list();
}
}
注意:
如果我使用sessionFactory.openStatelessSession();
在會話配置中的DAO類hibernate5.LocalSessionFactoryBean
中不會引起問題。
但關鍵是-我想使用sessionFactory.getCurrentSession();
我該如何實現?
希望您在spring配置文件中啟用了事務支持。 如果不是,請使用<tx:annotation-driven>
啟用它
並且,聲明transactionManager
如下:
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
嘗試從ColorsService
刪除@Transactional
,如下所示:
@Service("colorsService")
public class ColorsService {
@Autowired
private ColorDao colorDao;
public List<Color> getAllColors() {
return colorDao.getAllColors();
}
}
並將其添加到ColorDaoHibernate
:
@Repository("colorDao")
public class ColorDaoHibernate implements ColorDao {
@Autowired
private SessionFactory sessionFactory;
public ColorDaoHibernate() {
}
@Transactional
@Override
public List<Color> getAllColors() {
Session session = sessionFactory.getCurrentSession();
// StatelessSession session = sessionFactory.openStatelessSession();
Query query = session.createQuery("FROM Color");
return query.list();
}
}
編輯sessionFactory
bean定義,如下所示:
<bean id="hibernateProps"
class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="properties">
<props>
<prop key="hibernate.current_session_context_class">thread</prop>
</props>
</property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"
p:dataSource-ref="dataSource" p:packagesToScan="ua.com.javer.flowerexpert"
p:hibernateProperties-ref="hibernateProps" />
好,問題解決了!
在我的mvc-dispatcher-servlet.xml
我有:
<context:component-scan base-package="ua.com.javer.flowerexpert" />
同時我有:
<context:component-scan base-package="ua.com.javer.flowerexpert.dao"/>
在dao-context.xml
,因此ua.com.javer.flowerexpert.dao
軟件包被掃描了兩次。
我將要在mvc-dispatcher-servlet.xml
掃描的軟件包更改為:
<context:component-scan base-package="ua.com.javer.flowerexpert.controller" />
僅掃描ua.com.javer.flowerexpert.controller
程序包(而不掃描dao)。 現在正在工作。
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