无法截获Spring AOP中的通知方法

Question

我正在使用Spring AOP实现自定义注释处理。我有下面的代码。

public class CacheDemo  {

    private static ApplicationContext applicationContext;

    public static void main(String args[])
    {
         applicationContext =
               new AnnotationConfigApplicationContext(ApplicationConfiguration.class);
    }
  }

//应用程序配置

@Configuration
@ComponentScan("Demo")
@Component
public class ApplicationConfiguration implements ApplicationContextAware {

    @Autowired
    TestCacheDemo testCacheDemo;
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext ctx) throws BeansException {

        applicationContext = ctx;
    }
   
    @Bean
    public void testCacheDemoIntialize()
    {
        testCacheDemo.setApplicationContext(applicationContext);
        testCacheDemo.test();
    }
}

@Aspect
@Component
public class CustomAnnotationAspect {

    @Autowired
    private AbstractCacheService cacheService;

    @Around("@annotation(Demo.CustomCacheable)")
    public Object customCacheable(ProceedingJoinPoint joinPoint) throws Throwable { // This method is not called at all

       joinPoint.proceed();

      // Some other code to follow

}

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface CustomCacheable {

}

 @Component
public class CacheProvider
{
    @Autowired
    AbstractCacheService abstractCacheService;
    CacheManager<String,String> cacheManager;


    @PostConstruct
    void init()
    {
        cacheManager = CreateCache.create(s -> {return s.toUpperCase();});
        abstractCacheService.setCacheManager(cacheManager);

    }

    @CustomCacheable
    String getCacheValue(String s)
    {
        String str=s.toUpperCase();
        return str;
    }

}

出于测试目的，我创建了下面的bean

@Component
public class TestCacheDemo extends TimerTask
{
    private  ApplicationContext applicationContext;
    private Timer timer;
    @Autowired
    CacheProvider cacheProvider;
    void test()
    {
        System.out.println("Called test");
        for (String beanName : applicationContext.getBeanDefinitionNames()) {
            System.out.println(beanName);
        }

        //CacheProvider cacheProvider = applicationContext.getBean(CacheProvider.class);
        //cacheProvider.getCacheValue("Hello");

        timer = new Timer();
        timer.schedule(this,1000,3000);
    }
    void setApplicationContext(ApplicationContext ctx)
    {
        applicationContext=ctx;
    }


    @Override
    public void run() {
        cacheProvider.getCacheValue("Hi");
    }
}

无论何时启动应用程序，它都将调用TestCacheDemo类的test方法，并将定时器设置为在3秒后触发，这样我就可以从timer任务的run方法内部调用带注释的方法getCacheValue。但是当调用带注释的方法时，不会调用注释处理器。因此，我无法进行注释处理。请让我知道问题出在哪里？

Answer 1

要在spring boot中使用AspectJ，必须启用它。您应该向应用程序主类（CacheDemo）或应用程序配置类添加以下注释。

@EnableAspectJAutoProxy