Spring 3 注释 - HibernateDaoSupport - 存储库需要会话工厂 [英] Spring 3 Annotations - HibernateDaoSupport - Repository Requires Session Factory

问题描述

我得到一个例外说:

java.lang.IllegalArgumentException:'sessionFactory' 或'hibernateTemplate' 是必需的

java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required

尝试在 HibernateDaoSupport 类上使用 @Repository 注释时.错误消息很简单，为了创建存储库，它需要一个 sessionFactory.但是，我在我的 XML 中定义了一个会话工厂:

When trying to use the @Repository annotation on a HibernateDaoSupport class. The error message is straightforward, in order to create the Repository it needs a sessionFactory. However,I have defined a session factory in my XML:

<!-- Hibernate -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dashDataSource" />
        <property name="annotatedClasses">
            <list>
                <value>com.mycomp.myapp.Category</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
            </props>
        </property>
    </bean>

所以我不确定如何为存储库提供它在创建注释驱动 bean 时所需的 SessionFactory，我尝试执行以下操作:

So I'm not sure how to give the repository the SessionFactory that it requires while it's creating it's annotation driven beans, I attempted to do the following:

 @Autowired
    protected HibernateTemplate createHibernateTemplate(SessionFactory sessionFactory) {
        return super.createHibernateTemplate(sessionFactory);
    }

但这并不能解决问题，可能是因为存储库在实例化时需要该属性，而不仅仅是在执行操作时.不幸的是，我不知道如何解决这个问题，因为没有构造函数或初始化方法可以用 @Autowired 注释覆盖.

But this does not solve the problem, likely because the repository needs that property while instantiating, not just when performing an action. Unfortunately, I don't know how to get around this problem because there are no constructors or initialization methods to override with a @Autowired annotation.

我检查以确保 sessionFactory bean 正在创建并且可以自动装配，这很好.

I checked to make sure the sessionFactory bean is being created and can be Autowired, and that is fine.

推荐答案

HibernateDaoSupport 通过 setSessionFactory() 与 SessionFactory 一起提供.但是，setSessionFactory() 是 final，因此您不能覆盖它来添加 @Autowired 注释.但是您可以将 @Autowired 应用于任意方法并从中调用 setSessionFactory():

HibernateDaoSupport is supplied with SessionFactory via setSessionFactory(). However, setSessionFactory() is final, so you can't override it to add an @Autowired annotation. But you can apply @Autowired to the arbitrary method and call setSessionFactory() from it:

@Autowired
public void init(SessionFactory factory) {
    setSessionFactory(factory);
}

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