详解SpringBoot启动项目后执行方法的几种方式

@Component
public class CommandLineRunnerImpl implements CommandLineRunner {
@Override
public void run(String... args) throws Exception {
System.out.println(Arrays.toString(args));
}
}

@Order(1) //通过order注解指定执行顺序
@Component
public class CommandLineRunnerInit implements CommandLineRunner {
    @Override
    public void run(String... args) throws Exception {
        System.out.println("CommandLineRunner 启动后执行方法...");
    }
}

@Order(2) //通过order注解指定执行顺序
@Component
public class ApplicationRunnerInit implements ApplicationRunner {
    @Override
    public void run(ApplicationArguments args) throws Exception {
        System.out.println("ApplicationRunner 启动后执行方法...");
    }
}

@Component
// 通过实现 Ordered 指定执行顺序
public class ApplicationRunnerInit implements ApplicationRunner, Ordered {
    @Override
    public void run(ApplicationArguments args) throws Exception {
        System.out.println("ApplicationRunner 启动后执行方法...");
    }
    @Override
    public int getOrder() {
       return 0;
    }
}

@Component
public class PostConstructTest {
    @PostConstruct
    public void inti1() {
        System.out.println("@PostConstruct 方法1执行...");
    }
    @PostConstruct
    public void inti2() {
        System.out.println("@PostConstruct 方法2执行...");
    }
}

@Component
public class ApplicationContextAwareTest implements ApplicationContextAware {
    private ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
        System.out.println("ApplicationContextAware 方法执行...");
    }
}

@Component
public class ApplicationListenerTest implements ApplicationListener {
    @Override
    public void onApplicationEvent(ApplicationEvent event) {
        System.out.println("ApplicationListener 方法执行...");
    }
}

@Component
public class InitializingBeanInit implements InitializingBean {
    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("InitializingBean 方法执行...");
    }
}