Невозможно автоподключить поле в перехватчике

Question

Мне нужно определить событие, когда я храню объект в базе данных. Я использую перехватчик aproach. класс перехватчик выглядит как ниже: Файл конфигурации

public class TaskInterceptor extends EmptyInterceptor { 

    @Autowired 
    private TaskNoticeRepository taskNoticeRepository;// my repository class 

    @Transactional 
    @Override 
    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) { 
     return super.onSave(entity, id, state, propertyNames, types); 
    } 
} 

Spring выглядит как ниже:

...<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> 
    <property name="sessionFactory" ref="sessionFactory"/> 
    <property name="nestedTransactionAllowed" value="true"/> 
</bean> 

<bean id="taskInterceptor" class="ru.librait.cs.infrastructure.service.interceptor.crm.TaskInterceptor"/> 

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> 
    <property name="dataSource" ref="dataSource"/> 
    <property name="packagesToScan" value="ru.librait.cs.model,ru.librait.cs.infrastructure.dto.export"/> 
    <property name="entityInterceptor" ref="taskInterceptor" />... 

Когда я построить проект, я получил сообщение об ошибке:

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actionController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.librait.cs.infrastructure.service.page.ActionPageService ru.librait.cs.controller.ActionController.actionPageService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actionPageService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.librait.cs.model.repository.ActionRepository ru.librait.cs.infrastructure.service.page.impl.ActionPageServiceImpl.actionRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actionRepository': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected org.hibernate.SessionFactory ru.librait.cs.model.repository.persistent.BaseRepositoryHibernate.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/app.xml]: Cannot resolve reference to bean 'taskInterceptor' while setting bean property 'entityInterceptor'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'taskInterceptor': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.librait.cs.model.repository.crm.TaskNoticeRepository ru.librait.cs.infrastructure.service.interceptor.crm.TaskInterceptor.taskNoticeRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'taskNoticeRepository': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected org.hibernate.SessionFactory ru.librait.cs.model.repository.persistent.BaseRepositoryHibernate.sessionFactory; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sessionFactory': FactoryBean which is currently in creation returned null from getObject 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469) 
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) 
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) 
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) 
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632) 
    at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1740) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) 
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) 
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) 
    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:618) 
    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:565) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) 
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) 
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) 
    at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1487) 
    at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:97) 
    at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1328) 
    at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1420) 
    at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:848) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322) 
    at sun.rmi.transport.Transport$1.run(Transport.java:177) 
    at sun.rmi.transport.Transport$1.run(Transport.java:174) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.rmi.transport.Transport.serviceCall(Transport.java:173) 
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
    at java.lang.Thread.run(Thread.java:744) 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.librait.cs.infrastructure.service.page.ActionPageService ru.librait.cs.controller.ActionController.actionPageService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actionPageService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.librait.cs.model.repository.ActionRepository ru.librait.cs.infrastructure.service.page.impl.ActionPageServiceImpl.actionRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actionRepository': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected org.hibernate.SessionFactory ru.librait.cs.model.repository.persistent.BaseRepositoryHibernate.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/app.xml]: Cannot resolve reference to bean 'taskInterceptor' while setting bean property 'entityInterceptor'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'taskInterceptor': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.librait.cs.model.repository.crm.TaskNoticeRepository ru.librait.cs.infrastructure.service.interceptor.crm.TaskInterceptor.taskNoticeRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'taskNoticeRepository': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected org.hibernate.SessionFactory ru.librait.cs.model.repository.persistent.BaseRepositoryHibernate.sessionFactory; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sessionFactory': FactoryBean which is currently in creation returned null from getObject 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284) 
    ... 56 more 

Как я могу исправить Это?

Answer 1

Вы создали конфигурацию куриного яйца (или циклическую зависимость): для создания sessionFactory вам нужен перехватчик. Перехватчику требуется репо. Репо нуждается в sessionFactory.

Самое простое решение внедрить ApplicationContext и добавить @PostConstruct метод:

@Autowired 
private ApplicationContext applicationContext; 

private TaskNoticeRepository taskNoticeRepository; 

@PostConstruct 
public void init() { 
    taskNoticeRepository = applicationContext.getBean(TaskNoticeRepository.class); 
} 

Это перемещает это настроить шаг немного назад и часто работает, но это хрупкое.

Для таких вещей я предпочитаю использовать «init beans», которые я получаю из контекста приложения при запуске приложения (в main() или прослушивателе контекста сервлета), которые связывают такие зависимости после того, как все бобы были созданы, но до того, как «нормальный» код имеет шанс запустить.

Таким образом, был бы ленивый компонент, который зависит от перехватчика и репо. Перехватчик получит сеттер для репо. Компонент будет иметь общедоступный метод init(), который будет вызывать сеттер.

Это позволяет избежать всех видов «магического» настроенного кода, который может работать или не работать.

Answer 2

Проблема циклическая зависимость, это плохой дизайн .. но вы можете попробовать

<bean id="taskInterceptor" class="ru.librait.cs.infrastructure.service.interceptor.crm.TaskInterceptor"> 
<property name="taskNoticeRepository" ref="taskNoticeRepository"/> 
    </bean> 

и удалить @Autowired или добавить @Component аннотацию TaskInterceptor и удалить объявление боба из XML