JBoss Wildfly中EJB的错误依赖关系

Question

我编写了一个TimerHelper类，它可以接收来自其他类的调用并尝试执行它们。如果发生异常，它将等待一段时间并重试。因此，其他类可以导出必须完成的任务，但不是目前必须完成的任务。

@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");

    }


}

}

14:56:19,125错误[org.jboss.MSC.service.fail]（MSC服务线程1-7）MSC000001:未能启动服务jboss.deployment.unit.“usermanagement.war”.PARSE:org.jboss.deployment.unit.“usermanagement.MSC.service.serviceController.startException.”usermanagement.war“.PARSE:wflysrv0153:未能处理在org.jboss.as.server.deployment.deploymentunitphaseService.start Impl$startTask.startService(ServiceControllerImpl.java:1948)在org.jboss.MSC.service.ServiceControllerImpl.run(ServiceControllerImpl.java:1881)在java.util.concurrent.ThreadPoolExecutor.runworker(ThreadPoolExecutor.java:1142)在java.util.concurrent.ThreadPoolExecutor.worker.run(ThreadPoolExecutor.javer.java.lang.thread.run模块位于org.jboss.as.ee.component.eemoduleDescription.addComponent(EemoduleDescription.java:162)在org.jboss.as.ejb3.deployment.processors.ejb3.deployment.processors.ejb3.deployment.processors.ejbComponentDescriptionFactory.addComponent(EjbComponentDescriptionFactory.java:58)在org.jboss.as.ejb3.deployment.processors.sessionBeanDescriptionFactory.java:58)在org.jboss.as.ejb3.deployment.processors.annotatedEJBComponentDescriptionDeploymentUnitProcessor.processAnnotations(annotatedEJBComponentDescriptionDeploymentDeploymentUnitProcessor.java:57)在

14:56:19,126错误[org.jboss.as.controller.management-Operation]（management-handler-thread-38)WflyCTL0013:Operation（“Deploy”）失败-地址:([（“deployment”=>“usermanagement.war”）])-失败描述：{“wflyCTL0080:failed services”=>{“jboss.deployment.unit.\”usermanagement.war\“.PARSE”=>“org.jbosment.unit.\”A.lang.IllegalArgumentException:Wflyee0040:此模块中已定义了名为'TimerHelper'的组件“}}14:56:19,126 ERROR[org.jboss.as.server]（management-handler-thread-38）Wflysrv0021:部署的部署”usermanagement.war“回滚了以下失败消息：{”wflyCTL0080:failed Services“=>{”jboss.deployment.unit.\“usermanagement.war\”.PARSE“=>”153：无法处理部署\“usermanagement.war\”的阶段解析，原因是:java.lang.IllegalArgumentException:WFlyee0040:此模块“}}中已定义了名为”TimerHelper“的组件

我很确定这是因为“@singleton”注释，但我不知道如何解决这个问题。也许这也是因为usermanagement依赖于“API”和“AAA”，而“AAA”也依赖于“API”？！

Answer 1

你解决这个了吗？在我的例子中，执行服务器清理似乎有所帮助（在eclipse中，在服务器上按右键并按“Clean”），然后选择Full Publish。

干杯内科斯