spring注解注入的bean和从ApplicationContext上下文取出的bean不是同一个？

public class SpringApplicationContext implements ApplicationContextAware {
 
    private static ApplicationContext applicationContext;
 
    @Override
    public void setApplicationContext(ApplicationContext context)
            throws BeansException {
 
        applicationContext = context;
    }
 
    public static Object getBean(String name) {
        return applicationContext.getBean(name);
    }
     
    public static ApplicationContext getApplicationContext(){
        return applicationContext;
    }
 
}

@Repository(value="helloDao")
public class HelloDao {
     
    public void save(){
        System.out.println("HelloDao.save");
    }
 
}
@Service("helloService")
public class HelloService {
    @Resource(name = "helloDao")
    private HelloDao dao;
 
    public void say() {
         
        System.out.println(SpringApplicationContext.getBean("helloDao")==dao);//false
         
        System.out.println("say hello");
    }
 
}