常见的Bean初始化生命周期接口执行顺序

记录一下SpringBean在容器中初始化时常见的生命周期接口回调

示例Demo

@Component
public class BeanLifeCycleTest implements InitializingBean,  ApplicationListener<ContextRefreshedEvent>, CommandLineRunner, ApplicationRunner, ApplicationContextAware, BeanFactoryAware, BeanNameAware, ApplicationContextInitializer {


	UserService userService;

	@Autowired
	RoleService roleService;

	@Autowired
	public void setDemoService(UserService userService) {
		System.err.println("----> bean初始化生命周期: setter执行");
		this.userService = userService;
	}

	public BeanLifeCycleTest() {
		System.err.println("----> bean初始化生命周期: constructor: "+ (userService == null ? "setter未注入" : "setter已注入") + "\t" +(roleService == null ? "field未注入" : "field已注入"));
	}

	@PostConstruct
	public void postConstruct() {
		System.err.println("----> bean初始化生命周期: postConstruct: "+ (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}

	@Override
	public void afterPropertiesSet() throws Exception {
		System.err.println("----> bean初始化生命周期: afterPropertiesSet: "+ (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}

	@Override
	public void onApplicationEvent(ContextRefreshedEvent arg0) {
		System.err.println("----> bean初始化生命周期: ApplicationListener " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}

	@Override
	public void run(String... args) throws Exception {
		System.err.println("----> bean初始化生命周期: CommandLineRunner " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}

	@Override
	public void run(ApplicationArguments args) throws Exception {
		System.err.println("----> bean初始化生命周期: ApplicationRunner " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}
	
	@Override
	public void initialize(ConfigurableApplicationContext applicationContext) {
		System.err.println("----> bean初始化生命周期: ApplicationContextInitializer " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}
	
	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		System.err.println("----> bean初始化生命周期: ApplicationContextAware " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}

	@Override
	public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
		System.err.println("----> bean初始化生命周期: BeanFactoryAware " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}

	@Override
	public void setBeanName(String name) {
		System.err.println("----> bean初始化生命周期: BeanNameAware " + (userService == null ? "setter未注入" : "setter已注入") + "\t" + (roleService == null ? "field未注入" : "field已注入"));
	}
}

执行结果

----> bean初始化生命周期: constructor: 						setter未注入				field未注入
----> bean初始化生命周期: 															setter执行
----> bean初始化生命周期: BeanNameAware 						setter已注入				field已注入
----> bean初始化生命周期: BeanFactoryAware 					setter已注入				field已注入
----> bean初始化生命周期: ApplicationContextAware 			setter已注入				field已注入
----> bean初始化生命周期: postConstruct: 					setter已注入				field已注入
----> bean初始化生命周期: afterPropertiesSet: 				setter已注入				field已注入
----> bean初始化生命周期: ApplicationListener 				setter已注入				field已注入
----> bean初始化生命周期: ApplicationRunner 					setter已注入				field已注入
----> bean初始化生命周期: CommandLineRunner 					setter已注入				field已注入