我可以在Singleton Enterprise Java Bean中启动ManagedThread吗? [英] Can I start a ManagedThread in a Singleton Enterprise Java Bean?

问题描述

我正在尝试在Singleton EJB中启动线程，但是正在抛出java.lang.IllegalStateException.这是我的(简化课程)课程:

I'm trying to start a thread in a Singleton EJB but java.lang.IllegalStateException is being thrown. This is my (cut-down) class:

Singleton
@LocalBean
@Startup
public class WatcherEJB {


    @Resource(name = "concurrent/masterActionsThreadFactor")
    ManagedThreadFactory threadFactory;

    Thread watcherThread;

    @PostConstruct
    public void startUp() {

        //Setup the listener using the ThreadFactory
        watcherThread = threadFactory.newThread(new Runnable() {

            @Override
            public void run() {
                //System.out.println("Watcher Thread started");
            }
        });
        watcherThread.start(); //java.lang.IllegalStateException thrown here
    } 
}

我假设何时尝试启动Thread对象还是Java EE 7不允许单例托管线程?

I'm assuming that there's a problem with when I'm trying to start the Thread object or does Java EE 7 not allow Managed threads in singletons?

推荐答案

您使用什么应用程序服务器?

What application server do You use?

如果是WildFly，则您可能会遇到此问题: https://issues.jboss.org/浏览/WFLY-2343

If it's WildFly You probably run into this issue: https://issues.jboss.org/browse/WFLY-2343

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