我可以实现一个beanfactorypostprocessor来做同样的事情，而不是在每个@bean方法中删除destroy方法：

@Component
public class DoNotDestroyPostProcessor implements BeanFactoryPostProcessor {

    private final Logger log = LoggerFactory.getLogger(DoNotDestroyPostProcessor.class);

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        String[] doNotDestroys = beanFactory.getBeanNamesForType(DoNotDestroy.class);
        for (String doNotDestroy : doNotDestroys) {
            BeanDefinition bean = beanFactory.getBeanDefinition(doNotDestroy);
            log.info("Don't destroy bean {} {}", bean.getFactoryMethodName(), bean.getDestroyMethodName());
            bean.setDestroyMethodName("");
        }
    }
}

这避免了添加bean而忘记清空destroy方法的问题。