java 每3秒执行一次_@Schedule注释每隔几分钟（或几秒钟）运行一次

我想尝试通过以下方式使用@Schedule批注：

public class MyTestServlet extends HttpServlet {

private static JcanLogger LOG = JcanLoggerFactory.getLogger(ServiceTestServlet.class);

@EJB CronService cronService;

public void service(HttpServletRequest req, HttpServletResponse resp) throws .... {

....

cronService.iLive();

}

---

@Local // because the ejb is in a servlet (there is no other jvm)

public interface CronService {

public void iLive();

public void runsEveryMinute();

}

---

@Singleton

public class CronServiceBean implements CronService {

private static final JcanLogger LOG = JcanLoggerFactory.getLogger(CronServiceBean.class);

@Schedule(minute="*")

public void runsEveryMinute() {

LOG.info(" runs EveryMinute ");

}

public void iLive() {

LOG.info("iLive");

}

---

LOG

...

CronServiceBean:34 ] iLive

根据日志，CronService运行良好，但是计划的任务“ runsEveryMinute”不起作用。

使用EJB计划任务如何工作？