同一個類中調用Java注解方法生效

方法一：添加一個新的類，使用類之間調用，此時注解生效。

方法二：從ApplicationContext中獲取該類的bean，然后調用帶注解的方法。

@Component
public class SpringBootBeanUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringBootBeanUtil.applicationContext == null) {
            SpringBootBeanUtil.applicationContext = applicationContext;
        }
    }
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }
    
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }
    
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }
}

@Service
public class ExperimentLoader {

    @PostConstruct
    public void init() {
        SpringBootBeanUtil.getBean(ExperimentLoader.class).loadExperiments();
    }

    @Scheduled(cron = "0 0/30 * * * *")
    public void scheduledLoad() {
       SpringBootBeanUtil.getBean(ExperimentLoader.class).loadExperiments();
    }

    @Transactional
    public void loadExperiments() {
		//this is the method that need annotation
    }
}

方法三：引入本類的一個實例，調用時，使用實例調用。

@Service
public class ExperimentLoader {

    @Autowired
    private ExperimentLoader loader;

    @PostConstruct
    public void init() {
        loader.loadExperiments();
    }

    @Scheduled(cron = "0 0/30 * * * *")
    public void scheduledLoad() {
        loader.loadExperiments();
    }

    @Transactional
    public void loadExperiments() {
		//this is the method that need annotation
    }

}

方法四：強制使用代理。這個方法在網上很常見，但我本地測試失敗。此處也記一下：
啟動類中添加 @EnableAspectJAutoProxy(exposeProxy = true)
調用：

 @PostConstruct
 public void init() {
     ((ExperimentLoader) AopContext.currentProxy()).loadExperiments();
 }

報錯：

Caused by: java.lang.IllegalStateException: Cannot find current proxy: Set 'exposeProxy' property on Advised to 'true' to make it available.
	at org.springframework.aop.framework.AopContext.currentProxy(AopContext.java:69)