SpringBoot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
@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");
}
}