java - Spring @Bean Name，不适用于@Qualifier

Question

我有一个 Spring Boot 应用程序。它创建 LocalSessionFactoryBean 对象并注入(inject) session 工厂变量。它工作正常，如下所示:

@Autowired
  @Qualifier(value="sessionFactory")
  private SessionFactory sessionFactory;


  @Primary
  @Bean
  public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean factory = new LocalSessionFactoryBean();
    factory.setDataSource(dataSource);
    factory.setPackagesToScan(
        new String[] {
          "com.abc..entities",
          "com.abc.xyz.entities",
          "
        });
    factory.setHibernateProperties(hibernateProperties());
    return factory;
  }

但是，我需要将sessionFactory的bean名称(默认为函数名称)从sessionFactory更改为entityManagerFactory，因此我执行了以下操作:

  @Autowired
  @Qualifier(value="entityManagerFactory")
  private SessionFactory sessionFactory;


  @Primary
  @Bean(name="entityManagerFactory")
  public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean factory = new LocalSessionFactoryBean();
    factory.setDataSource(dataSource);
    factory.setPackagesToScan(
        new String[] {
          "com.abc..entities",
          "com.abc.xyz.entities",
          "
        });
    factory.setHibernateProperties(hibernateProperties());
    return factory;
  }

但它抛出错误:

> Error creating bean with name 'XYZ': Unsatisfied dependency expressed
> through field 'sessionFactory'; nested exception is
> org.springframework.beans.factory.NoSuchBeanDefinitionException: No
> qualifying bean of type 'org.hibernate.SessionFactory' available:
> expected at least 1 bean which qualifies as autowire candidate.
> Dependency annotations:
> {@org.springframework.beans.factory.annotation.Autowired(required=true),
> @org.springframework.beans.factory.annotation.Qualifier(value=entityManagerFactory)}

我相信我做对了，我在这里错过了什么？

更新:-

我按照答案之一尝试了以下操作，但没有成功:

@Autowired
  @Qualifier(value = "entityManagerFactory")
  private SessionFactory sessionFactory; 

并将方法更改为

@Primary
@Bean

public LocalSessionFactoryBean entityManagerFactory()
 { ..........},


>  Unsatisfied dependency expressed through field 'sessionFactory';
> nested exception is
> org.springframework.beans.factory.NoSuchBeanDefinitionException: No
> qualifying bean of type 'org.hibernate.SessionFactory' available:
> expected at least 1 bean which qualifies as autowire candidate.
> Dependency annotations:
> {@org.springframework.beans.factory.annotation.Autowired(required=true),
> @org.springframework.beans.factory.annotation.Qualifier(value=entityManagerFactory)}

Answer 1

我认为这里发生的情况是，entityManagerFactory 会自动从 spring 注册到另一个 bean。因此你没有得到你所要求的。

尝试稍微更改一下名称

@Bean(name="customEntityManagerFactory")
  public LocalSessionFactoryBean sessionFactory() {

然后

@Autowired
  @Qualifier("customEntityManagerFactory")
  private SessionFactory sessionFactory;