Using BeanDefinitionRegistryPostProcessor to register bean

PersonBeanDefinitionRegistryPostProcessor.java

@Component
@Slf4j
public class PersonBeanDefinitionRegistryPostProcessor
		implements BeanDefinitionRegistryPostProcessor {

    @Override
    public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry)
    throws BeansException {
        // 注册Bean定义，容器根据定义返回bean
        log.info("register personManager1>>>>>>>>>>>>>>>>");
        //构造bean定义
        BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder
				.genericBeanDefinition(PersonManager.class);
        //设置依赖
        beanDefinitionBuilder.addPropertyReference("personDao", "personDao");
        BeanDefinition personManagerBeanDefinition = beanDefinitionBuilder
				.getRawBeanDefinition();
        //注册bean定义
        registry.registerBeanDefinition("personManager1", personManagerBeanDefinition);

	}

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
    throws BeansException {
        // 注册Bean实例，使用supply接口
        log.info("register personManager2>>>>>>>>>>>>>>>>");
        BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder
            .genericBeanDefinition(PersonManager.class, () -> {
	         PersonDao personDao = beanFactory.getBean(PersonDao.class);
                 PersonManager personManager = new PersonManager();
                 personManager.setPersonDao(personDao);
                 return personManager;
         });
         BeanDefinition personManagerBeanDefinition = beanDefinitionBuilder
            .getRawBeanDefinition();
        ((DefaultListableBeanFactory) beanFactory)
          .registerBeanDefinition("personManager2", personManagerBeanDefinition);
    }
}