Spring引导 - 将Hibernate映射文件添加到实体管理器 [英] Spring-boot - add hibernate mapping file to entity manager

问题描述

我将旧版应用程序迁移到Spring引导，我们提出了一个解决方案，它包含一个

  ... 
 @Autowired 
私有DataSource数据源; 
 
 @Bean 
 public LocalSessionFactoryBean sessionFactory（）{
 LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean（）; 
 sessionFactoryBean.setDataSource（dataSource）; 
 
 // ... 
 
 sessionFactoryBean.setMappingResources（META-INF / named-queries.hbm.xml）; 
 
 return sessionFactoryBean; 
} 
  

但是我终于有了一个entityManager bean和一个sessionFactory bean在我的应用程序！

根据你的解决方案是一个很好的解决方案吗？
有没有办法在不使用sessionFactory bean的情况下将hibernate映射文件（named-query.hbm.xml）添加到entityManager中？

谢谢为您提前建议

**编辑**
来自JB Nizet的建议，也想出了另一个解决方案

@Bean
LocalContainerEntityManagerFactoryBean entityManagerFactory（）{
LocalContainerEntityManagerFactoryBean entityManagerFactory = new LocalContainerEntityManagerFactoryBean ）;

entityManagerFactory.setDataSource（dataSource）;

// ...

entityManagerFactory.setMappingResources（META-INF / named-queries.hbm.xml）;

返回entityManagerFactory;
}


并且在我的DAO / Service中，我仍然可以获得hibernate会话：

  private Session getSession ）{
 // return this.sessionFactory.getCurrentSession（）; 
返回this.entityManager.unwrap（Session.class）; 
} 
  

但如果有人发现我们可以做同样的事情，用spring-boot自动配置属性，很受欢迎！

解决方案

  @Autowired 
私有ResourceLoader rl; 
 
 
 $ be $ b $ public LocalSessionFactoryBean sessionFactory（）抛出IOException {
 LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean（）; 
 sessionFactoryBean.setMappingLocations（loadResources（））; 
} 
 
 public Resource [] loadResources（）{
 Resource [] resources = null; 
尝试{
 resources = ResourcePatternUtils.getResourcePatternResolver（rl）
 .getResources（classpath：/ hibernate / *。hbm.xml）; 
} catch（IOException e）{
 // TODO自动生成的catch块
 e.printStackTrace（）; 
} 
返回资源; 
} 
  

I'm migrating legacy app to Spring-boot and have to integrate an hibernate named query mapping file (previously configured in persitence.xml file).

I've come out with a solution with an

...
@Autowired
private DataSource dataSource;

@Bean
public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
    sessionFactoryBean.setDataSource(dataSource);

    //...

    sessionFactoryBean.setMappingResources("META-INF/named-queries.hbm.xml");

    return sessionFactoryBean;
}   

But i'm ending having an entityManager bean and a sessionFactory bean in my application!

is it a good solution according to you? Is there a way to add somehow the hibernate mapping file (named-query.hbm.xml) to the entityManager without using the sessionFactory bean?

Thanks in advance for you suggestions

** EDIT ** fro JB Nizet's suggestion, also come up with another solution

@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
    LocalContainerEntityManagerFactoryBean entityManagerFactory = new LocalContainerEntityManagerFactoryBean();

    entityManagerFactory.setDataSource(dataSource);

    // ...

    entityManagerFactory.setMappingResources("META-INF/named-queries.hbm.xml");

    return entityManagerFactory;
}

and in my DAO/Service, i can still get hibernate session with:

private Session getSession() {
        //return this.sessionFactory.getCurrentSession();
        return this.entityManager.unwrap(Session.class);
    }

But if someone nows if we can do the same thing with spring-boot auto-config with properties, it's welcomed!

解决方案

@Autowired
private ResourceLoader rl;


@Bean
public LocalSessionFactoryBean sessionFactory() throws IOException {
    LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
    sessionFactoryBean.setMappingLocations(loadResources());
}

public Resource[] loadResources() {
    Resource[] resources = null;
    try {
        resources = ResourcePatternUtils.getResourcePatternResolver(rl)
            .getResources("classpath:/hibernate/*.hbm.xml");
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return resources;
}

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