Spring + Hibernate，Autowire sessionFactory进入hibernate DAO [英] Spring+Hibernate, Autowire sessionFactory into hibernate DAO

问题描述

根据 Hibernate API 3 和 Spring 3.x ，我有一个 Hibernate DAO ，我只用一个 sessionFactory 和 NOT an HibernateDaoSupport + getHibernateTemplate（） - 我希望这是一个不错的选择... -

现在我的目标是自动编写 sessionFactory 在我的DAO中使用注释。

在我的 spring.xml p>

 < context：component-scan base-package =data/> 
  

内部数据包中有我所有的DAO和Service类。

这是我简单的 HibernateDao ：

  @Repository 
 public class PersonH​​DAO实现PersonDAO {
 
 private SessionFactory sessionFactory; 
 
 @Autowired 
 public void setSessionFactory（SessionFactory sessionFactory）{
 this.sessionFactory = sessionFactory; 
} 
 
 public List< Person> findAll（）{
 return sessionFactory.getCurrentSession（）。createQuery（bla bla）。list（）; 
 
 
 
 
 $ b $ p $  spring.xml 加载，但 sessionFactory 仍然是 null 。
 
 
 
我必须做什么？ 
 
 
 编辑  
 
 
这是 spring.xml 中的 sessionFactory 声明： 
 
 
 <？xml version =1.0encoding =UTF-8？> 
< beans xmlns =http://www.springframework.org/schema/beans
 xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xmlns：tx =http://www.springframework.org/schema/tx
 xmlns：context =http://www.springframework.org/schema/context
 
 xsi：schemaLocation = 
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
 http://www.springframework.org/schema/上下文http://www.springframework.org/schema/context/spring-context-3.0.xsd\"> 
 
< bean id =dataSourceclass =org.springframework.jdbc.datasource.DriverManagerDataSource> 
<！ - < property name =driverClassNamevalue =org.h2.Driver/> - > 
< property name =urlvalue =my / db / url/> 
< property name =usernamevalue =myUsername/> 
< property name =passwordvalue =myPassword/> 
< / bean> 
 
< bean id =sessionFactoryclass =org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean> 
< property name =dataSourceref =dataSource/> 
< property name =packagesToScanvalue =data/> 
< property name =hibernateProperties> 
<道具> 
< prop key =hibernate.dialect> org.hibernate.dialect.H2Dialect< / prop> 
< prop key =hibernate.current_session_context_class> thread< / prop> 
< prop key =hibernate.transaction.factory_class> org.hibernate.transaction.JDBCTransactionFactory< / prop> 
< prop key =hibernate.show_sql> true< / prop> 
< prop key =hibernate.hbm2ddl.auto> update< / prop> 
< /道具> 
< / property> 
< / bean> 
 
< context：component-scan base-package =data/> 
 
< tx：annotation-driven /> 
 
< bean id =transactionManagerclass =org.springframework.orm.hibernate3.HibernateTransactionManager> 
< property name =sessionFactoryref =sessionFactory/> 
< / bean> 
 
< / beans> 
  
  EDIT2  
现在 sessionFactory 不为null，但我有另一种异常：
  org.springframework.beans.factory。 NoSuchBeanDefinitionException：没有定义类型为[data.PersonH​​DAO]的唯一bean：期望的单个bean，但找到0：
  
也许意味着它找不到 PersonH​​DAO  bean？
 
 
 
感谢所有。
  
 
 
 < bean  
 
 id =sessionFactory
 class =org.springframework.orm.hibernate3.LocalSessionFactoryBean> 
< property name =configLocation> 
<值>文件：src / hibernate.cfg.xml< /值> 
< / property> 
< / bean> 
  
 
i have an Hibernate DAO, in according with Hibernate API 3 and Spring 3.x, I use simply a sessionFactory and NOT an HibernateDaoSupport+getHibernateTemplate() - i hope this is a good choice... -

Now my goal is to autowire sessionFactory into my DAO using annotations.

In my spring.xml i have this:
<context:component-scan base-package="data" />
Inside data package i have all my DAO and Service classes.

This my simple HibernateDao:
@Repository
public class PersonHDAO implements PersonDAO {

 private SessionFactory sessionFactory;

 @Autowired
 public void setSessionFactory(SessionFactory sessionFactory) {
     this.sessionFactory = sessionFactory;
 }

 public List<Person> findAll(){
  return sessionFactory.getCurrentSession().createQuery("bla bla").list();
 }
}
I have no error during spring.xml loading, but sessionFactory still be null.

What i have to do?

EDIT

This is my sessionFactory declaration in spring.xml:
<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"

       xsi:schemaLocation=
       "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <!-- <property name="driverClassName" value="org.h2.Driver" /> -->
        <property name="url" value="my/db/url" />
        <property name="username" value="myUsername" />
        <property name="password" value="myPassword" />
    </bean>

    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="packagesToScan" value="data" />
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop>
                <prop key="hibernate.current_session_context_class">thread</prop>
                <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
            </props>
        </property>
    </bean>

    <context:component-scan base-package="data" />

    <tx:annotation-driven/>

    <bean id="transactionManager"  class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>

</beans>
EDIT2
Now sessionFactory is not null, but i have another kind of exception:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [data.PersonHDAO] is defined: expected single bean but found 0:
Maybe means it can't find PersonHDAO bean?

Thanks all.
解决方案
Did you declare sessionFactory bean?
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>file:src/hibernate.cfg.xml</value>
</property>
</bean>


                        
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