[英]Autowired to hibernate Interceptor
I'm extending hibernate.EmptyInterceptor and in my implementation I would like to have autowired to some services but they return null. 我正在扩展hibernate.EmptyInterceptor,在我的实现中,我希望自动连接到某些服务,但它们返回null。 I added a @Component annotation over the class. 我在类上添加了一个@Component注释。 My code: 我的代码:
<property name="jpaPropertyMap">
<map>
<entry key="javax.persistence.transactionType" value="JTA" />
<entry key="hibernate.current_session_context_class" value="jta" />
<entry key="hibernate.transaction.manager_lookup_class"
value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup" />
<entry key="hibernate.connection.autocommit" value="false" />
<entry key="hibernate.ejb.interceptor" value="com.net.filter.AuditInterceptor"/>
</map>
</property>
and the class : 和班级:
@SuppressWarnings("serial")
@Component
public class AuditInterceptor extends EmptyInterceptor {
@Autowired
private IUserSessionService userSessionService;
I know this is probably coming two years too late - but I was searching for an answer for the same problem, and thought this would be useful to someone in the future. 我知道这可能要来两年太晚了 - 但我正在寻找同样问题的答案,并认为这对未来的某些人有用。
Looking at Hibernate code looks like Hibernate would instantiate a new instance of the interceptor if you give the class name, but if you pass in a bean instance reference it will use that. 查看Hibernate代码看起来如果给出类名,Hibernate将实例化拦截器的新实例,但如果传入bean实例引用,它将使用它。
So 所以
<bean id="myInterceptor" class="com.net.filter.AuditInterceptor" />
... ...
<property name="jpaPropertyMap">
<map>
<entry key="javax.persistence.transactionType" value="JTA" />
<entry key="hibernate.current_session_context_class" value="jta" />
<entry key="hibernate.transaction.manager_lookup_class"
value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup" />
<entry key="hibernate.connection.autocommit" value="false" />
<entry key="hibernate.ejb.interceptor" >
<ref bean="myInterceptor" />
</entry>
</map>
</property>
Now the bean myInterceptor is Spring managed and autowiring will work! 现在bean myInterceptor是Spring管理的,自动装配将工作!
Spring will never leave a @Autowired
target as null
(unless null
is what you are injecting). Spring 永远不会将@Autowired
目标保留为null
(除非null
是你注入的)。 That should tell you that if an @Autowired
field is null
, then Spring had nothing to do with it. 这应该告诉你,如果@Autowired
字段为null
,那么Spring与它无关。
It seems that is the case here. 这似乎就是这种情况。 By providing something like 通过提供类似的东西
<entry key="hibernate.ejb.interceptor" value="com.net.filter.AuditInterceptor"/>
I believe you're telling Hibernate to create that instance itself and it therefore won't be a Spring managed bean. 我相信你告诉Hibernate创建该实例本身,因此它不会是一个Spring托管bean。
If you post the rest of the bean definition because I don't know what bean you are trying to inject into, there might be alternatives. 如果你发布剩下的bean定义,因为我不知道你想要注入什么bean,可能有其他选择。
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