JBoss Wildfly中与EJB的错误依赖关系

我写了一个TimerHelper类，它可以从其他类接收Callables并尝试执行它们 . 如果发生异常，它会等待一段时间并再次尝试 . 因此，其他类可以导出必须完成的任务，但目前还不完全 .

@Startup
@Singleton
public class TimerHelper{
private static final Logger LOGGER = Logger.getLogger(TimerHelper.class.getName());

private Callable<Void> task;
private int failureCounter = 0;

public TimerHelper(){

}

@Resource
private ManagedExecutorService executorService;
@Resource
private TimerService timerService;

public void setNewTimer(Callable<Void> task){
this.task = task;

timerService.createIntervalTimer(0, 5000, new TimerConfig());
}

@Timeout
public void timerMethod(Timer timer) {
    if(failureCounter <10){

        try{
            Future<Void> future = executorService.submit(task);
            future.get();       
            LOGGER.log(Level.INFO, "Did something");
            failureCounter =0;
            timer.cancel();
            }catch(Exception e){
                failureCounter++;
                LOGGER.log(Level.WARNING, "Errored while doing something, will try again");
            }

    }else{
        timer.cancel();
        LOGGER.log(Level.SEVERE, "Tried to add something to Database several times, but failed. Please check the OpenRDF-Database");

    }


}

}

这个TimerHelper类位于一个API包中，许多其他包在其POM.xml中都有依赖关系 . 除了一个模块“Usermanagement”之外，一切正常 . 当我尝试将它部署到Wildfly 9时，我总是得到这个例外：

14：56：19,125 ERROR [org.jboss.msc.service.fail]（MSC服务主题1-7）MSC000001：无法启动服务jboss.deployment.unit . “usermanagement.war”.PARSE：org.jboss . 服务jboss.deployment.unit中的msc.service.StartException . “usermanagement.war”.PARSE：WFLYSRV0153：无法在org.jboss.as.server.deployment.DeploymentUnitPhaseService.start处理部署“usermanagement.war”的阶段PARSE（ DeploymentUnitPhaseService.java:163）org.jboss.msc.service.ServiceControllerImpl $ StartTask.startService（ServiceControllerImpl.java:1948）at org.jboss.msc.service.ServiceControllerImpl $ StartTask.run（ServiceControllerImpl.java:1881）at java .util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617）at java.lang.Thread.run（Thread.java:745） by：java.lang.IllegalArgumentException：WFLYEE0040：此模块中已在org.jboss.as.ee.component.EE中定义了名为“TimerHelper”的组件在org.jboss.as.ejb3.deployment.processors.SessionBeanComponentDescriptionFactory.processSessionBeans的org.jboss.as.ejb3.deployment.processors.EJBComponentDescriptionFactory.addComponent（EJBComponentDescriptionFactory.java:58）上的ModuleDescription.addComponent（EEModuleDescription.java:162） SessionBeanComponentDescriptionFactory.java:169）org.jboss.as.ejb3.deployment.processors.SessionBeanComponentDescriptionFactory.processAnnotations（SessionBeanComponentDescriptionFactory.java:98）at org.jboss.as.ejb3.deployment.processors.AnnotatedEJBComponentDescriptionDeploymentUnitProcessor.processAnnotations（AnnotatedEJBComponentDescriptionDeploymentUnitProcessor.java： 57）org.jboss.as.ejb3.deployment.processors.AbstractDeploymentUnitProcessor.deploy（AbstractDeploymentUnitProcessor.java:81）at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start（DeploymentUnitPhaseService.java:156）... 5更多14：56：19,126 ERROR [org.jboss.as.controller.management-operation]（management-handler-threa d - 38）WFLYCTL0013：操作（“部署”）失败 - 地址：（[（“deployment”=>“usermanagement.war”）]） - 失败描述：{“WFLYCTL0080：失败的服务”=> {“jboss.deployment服务jboss.deployment.unit . \“usermanagement.war \”中的.unit . \“usermanagement.war \” . PARSE“=>”org.jboss.msc.service.StartException . PARSE：WFLYSRV0153：处理阶段PARSE失败of deployment \“usermanagement.war \”引起：java.lang.IllegalArgumentException：WFLYEE0040：已在此模块中定义名为'TimerHelper'的组件“}} 14：56：19,126 ERROR [org.jboss.as.server] （management-handler-thread-38）WFLYSRV0021：部署“usermanagement.war”部署时出现以下失败消息：{“WFLYCTL0080：Failed services”=> {“jboss.deployment.unit . \”usermanagement.war \“ . PARSE”=>“org.jboss.msc.service.StartException in service jboss.deployment.unit . \”usermanagement.war \“ . PARSE：WFLYSRV0153：无法处理部署的阶段PARSE \”usermanagement.war \ “引起：java.lan g.IllegalArgumentException：WFLYEE0040：已在此模块中定义名为“TimerHelper”的组件“}}

我很确定这是因为“@Singleton”注释，但我无法弄清楚如何解决这个问题 . 也许它也因为用户管理依赖于“api”和“aaa”，而“aaa”也依赖于“api”？