小编car*_*ori的帖子

我试图用以下代码测试@Schedule注释:

import javax.ejb.Schedule;
import javax.ejb.Singleton;
import javax.ejb.Startup;

@Singleton
@Startup
public class TimerTest {

    public TimerTest() {

    }

    @Schedule(second = "*", minute = "*", hour = "*")
    public void sayHello() {
        System.out.println("Hello");
    }

}

但是,当我将它部署到wildfly 8.1.0(最终)的独立实例时,我在日志中收到以下错误消息:

2014-09-23 08:38:03,076 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service jboss.deployment.unit."test-server.war".component.TimerTest.ejb3.timerService: org.jboss.msc.service.StartException in service jboss.deployment.unit."test-server.war".component.TimerTest.ejb3.timerService: Failed to start service
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904) [jboss-msc-1.2.2.Final.jar:1.2.2.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
    at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
Caused by: java.lang.NullPointerException
    at org.jboss.as.ejb3.timerservice.TimerServiceImpl.doesTimeoutMethodMatch(TimerServiceImpl.java:959)
    at org.jboss.as.ejb3.timerservice.TimerServiceImpl.restoreTimers(TimerServiceImpl.java:710)
    at org.jboss.as.ejb3.timerservice.TimerServiceImpl.start(TimerServiceImpl.java:202)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948) …

我在eclipse中使用以下maven webapp项目创建了一个项目:

将包添加到项目中时(右键单击项目 - >新建 - >包),包将被添加为文件夹(我添加了一个名为core的包).它没有通常的包图标:

如果我尝试创建一个新类并选择一个包,则列表框中没有条目.我尝试在普通的eclipse动态Web项目中创建包,这些工作正常.

如何在启用Maven的webapp项目中获取软件包？