1、在Bean对象初始化之前可以做的操作
@Component
public class InitBean implements BeanDefinitionRegistryPostProcessor {
private static final Logger logger = LoggerFactory.getLogger(InitBean.class);
@Override
public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry beanDefinitionRegistry) throws BeansException {
logger.info(" init bean1..");
}
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory configurableListableBeanFactory) throws BeansException {
logger.info(" init bean2..");
}
}
2、在Bean对象初试完之后可以做的操作
@Component public class InitBean implements InitializingBean { private static final Logger logger = LoggerFactory.getLogger(InitBean.class); @Override public void afterPropertiesSet() throws Exception { logger.info(" init bean.."); } }
3、在项目启动之前可以做的操作
@Service public class StartAddDataListener implements ApplicationListener<ContextRefreshedEvent> { @Override public void onApplicationEvent(ContextRefreshedEvent event){ System.out.println("=========================初始化"); } }
4、在项目启动之后可以做的操作（项目已经启动成功）
Component public class InitProject implements CommandLineRunner { private static final Logger logger = LoggerFactory.getLogger(InitProject.class); @Override public void run(String... args) { logger.info("==========init project==========="); } }
原文：https://www.cnblogs.com/longpizi/p/10529645.html