SpringBoot三十三：启动时加载方法

方式一：实现ServletContextListener接口

@Component
public class SpringBootInitialization1 implements ServletContextListener {

	@Override
	public void contextInitialized(ServletContextEvent sce) {
		System.out.println("方式一：实现ServletContextListener接口");
	}

}

方式二：方法上加注解@PostConstruct

@Component
public class SpringBootInitialization2 {

	@PostConstruct
	public static void init() {
		System.out.println("方式二：方法上加注解@PostConstruct");
	}

}

方式三：实现ServletContextAware接口

@Component
public class SpringBootInitialization3 implements ServletContextAware {

	@Override
	public void setServletContext(ServletContext servletContext) {
		System.out.println("方式三：实现ServletContextAware接口");
	}

}

方式四：实现ApplicationListener<ContextRefreshedEvent>接口

@Component
public class SpringBootInitialization4 implements ApplicationListener<ContextRefreshedEvent> {

	@Override
	public void onApplicationEvent(ContextRefreshedEvent event) {
		System.out.println("方式四：实现ApplicationListener<ContextRefreshedEvent>接口");
	}

}

方式五：实现ApplicationRunner接口

@Component
public class SpringBootInitialization5 implements ApplicationRunner {

	@Override
	public void run(ApplicationArguments args) throws Exception {
		System.out.println("方式五：实现ApplicationRunner接口");
	}

}

方式六：实现CommandLineRunner接口

@Component
public class SpringBootInitialization6 implements CommandLineRunner {

	@Override
	public void run(String... args) throws Exception {
		System.out.println("方式六：实现CommandLineRunner接口");

	}

}

代码托管：springboot_bootLoader