为什么HibernateTransactionManager不自动注入Spring注入？ [英] Why HibernateTransactionManager doesn't autowire Spring injections?

问题描述

在用于自动审计Hibernate CRUD操作的Interceptor类中，Spring的@Autowired注释不起作用。

我认为这是因为在配置时，Spring没有时间配置自动装配。在其他班级，一切都很好。这里有解决方法或权利吗？感谢。

类PersistenteConfig

  // ... 
 @Configuration 
 @EnableTransactionManagement 
 @PropertySource（{classpath：/foo/bar/persistence-mysql.properties}）
 @ComponentScan（{ foo.bar}）
 
 // ... 
 @Bean 
 @Autowired 
 public HibernateTransactionManager transactionManager（SessionFactory sessionFactory）{
 HibernateTransactionManager txManager =新的HibernateTransactionManager（）; 
 txManager.setSessionFactory（sessionFactory）; 
 
 AuditLogInterceptorImpl interceptor = new AuditLogInterceptorImpl（）; 
 txManager.setEntityInterceptor（interceptor）; 
返回txManager; 
 
 // 
  

类AuditLogInterceptorImpl strong>

  // ... 
 @Service 
 @Transactional 
公共类AuditLogInterceptorImpl扩展EmptyInterceptor {
 
 private static final long serialVersionUID = 1L; 
 
 @Autowired //< ==不适用于...：o（对象在运行时为空）
 EventsService eventsService; 
 
 // ... 
  

解决方案

<当你用这种方式实例化的时候，你的拦截器没有被配置成托管的Spring bean。尝试以下操作，使拦截器成为一个托管（并因此被注入）bean：

类PersistenteConfig

  // ... 
 @Configuration 
 @EnableTransactionManagement 
 @PropertySource（{classpath：/ foo / bar / persistence-mysql .properties}）
 @ComponentScan（{foo.bar}）
 
 // ... 
 @Bean 
 public AuditLogInterceptor auditLogInterceptor（）{
返回新的AuditLogInterceptorImpl（）; 
 
 
 $Be 
 @Autowired 
 public HibernateTransactionManager transactionManager（SessionFactory sessionFactory）{
 HibernateTransactionManager txManager = new HibernateTransactionManager（）; 
 txManager.setSessionFactory（sessionFactory）; 
 
 txManager.setEntityInterceptor（auditLogInterceptor（））; 
返回txManager; 
} 
 // ... 
  

In an Interceptor class for automatically audit Hibernate CRUD operations, @Autowired annotation from Spring is not working.

I supose that it is due to, at configuration time, Spring doesn't have had time to configure autowiring stuff yet. In other classes everything is doing well. Is there a workaround or a "right-to-do" here? Thanks.

Class PersistenteConfig

//...
@Configuration
@EnableTransactionManagement
@PropertySource({"classpath:/foo/bar/persistence-mysql.properties"})
@ComponentScan({"foo.bar" })

        //...
               @Bean
               @Autowired
               public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
                  HibernateTransactionManager txManager = new HibernateTransactionManager();
                  txManager.setSessionFactory(sessionFactory);

                  AuditLogInterceptorImpl interceptor = new AuditLogInterceptorImpl();
                  txManager.setEntityInterceptor(interceptor);
                  return txManager;
               }
        //...

Class AuditLogInterceptorImpl

//...
    @Service
    @Transactional
    public class AuditLogInterceptorImpl extends EmptyInterceptor {

        private static final long serialVersionUID = 1L;

        @Autowired // <== NOT WORKING HERE... :o (object is null at runtime)
        EventsService eventsService;

//...

解决方案

Your interceptor is not configured as a managed Spring bean when instantiated this way. Try the following, making the interceptor a managed (and thus injected) bean:

Class PersistenteConfig

//...
@Configuration
@EnableTransactionManagement
@PropertySource({"classpath:/foo/bar/persistence-mysql.properties"})
@ComponentScan({"foo.bar" })

        //...
               @Bean
               public AuditLogInterceptor auditLogInterceptor() {
                   return new AuditLogInterceptorImpl();
               }

               @Bean
               @Autowired
               public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
                  HibernateTransactionManager txManager = new HibernateTransactionManager();
                  txManager.setSessionFactory(sessionFactory);

                  txManager.setEntityInterceptor(auditLogInterceptor());
                  return txManager;
               }
        //...

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