使用jboss5线程池启动线程

Question

我的应用程序在JBoss 5中运行，需要启动一个线程来异步执行一些工作。代码使用'ThreadPoolMBean‘来使用JBoss自己的线程池中的线程--这在JBoss 4中有效，但现在似乎遇到了类加载器问题，因为我得到了这个异常：

14:52:15,918 WARN [org.jboss.util.threadpool.RunnableTaskWrapper] (JBoss System Threads(1)-413:) Unhandled throwable for runnable: application.NSP@4c80c3ab () 
    org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is java.lang.IllegalArgumentException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader
    at org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:596)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:127)
    at application.NSP.run(NotfallStopperProzess.java:105)
    at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:147)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IllegalArgumentException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader
    at java.lang.reflect.Proxy.getProxyClass(Proxy.java:353)
    at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:581)
    at org.hibernate.jdbc.BorrowedConnectionProxy.generateProxy(BorrowedConnectionProxy.java:67)
    at org.hibernate.jdbc.ConnectionManager.borrowConnection(ConnectionManager.java:163)
    at org.hibernate.jdbc.JDBCContext.borrowConnection(JDBCContext.java:111)
    at org.hibernate.impl.SessionImpl.connection(SessionImpl.java:360)
    at org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:507)
    ... 8 more

启动线程的代码如下：

MBeanServer server = MBeanServerLocator.locateJBoss();
ObjectName objName;
objName = new ObjectName("jboss.system:service=ThreadPool");
ThreadPoolMBean poolMBean =
   (ThreadPoolMBean) MBeanServerInvocationHandler.newProxyInstance(server, objName, ThreadPoolMBean.class, false);
poolMBean.getInstance().run(runnable)

我假设问题出在JBoss线程池和我的应用程序(EAR)之间的类加载器不同。引用Hibernate时会出现问题，Hibernate在系统中有两个版本(一个在JBoss中，一个在EAR中)。

在JBoss-5中以这种方式使用JBoss线程池是可能的吗？或者，我是否需要在应用程序中定义自己的线程池，比如在JCA适配器中？

Answer 1

你的耳朵里有jboss-app.xml吗？查看此站点以了解JBoss类加载隔离问题http://community.jboss.org/wiki/ClassLoadingConfiguration