在另一个Java实例上启动一个线程并异步执行逻辑

Question

背景

• 我正在开发一个运行在JavaEE应用服务器上的web应用程序。

- This application server has “thread canceling” feature. It terminates long-running (20min or more) threads for preventing resource starvation caused by deadlock or infinite loop.
- This application server forbids to make child threads on servlets (this application server can write some logs for failure analysis, but these logs don’t work properly on child threads).

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• 我的应用程序有一些耗时的业务逻辑(例如，为所有用户打印分项账单)。这种逻辑是从网页上的按钮启动的。

- Some business logics need 30 minutes or more to finish (it is enough for the browsers to get timeout error).
- These logics should be executed only if preceding transaction finished successfully (e.g. the bills should not be printed if payments not recorded to DB successfully).  
    - I know I can use messaging APIs (e.g. ActiveMQ with JMS API has transactional feature). But I want to avoid these solutions, because a global transaction between RDBMS and JMS will broken in some situations.

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问题

我认为我必须在另一个Java上的线程上运行这些逻辑。如何在另一个Java实例上启动线程并异步执行逻辑？

Answer 1

经过进一步的调查，我发现Spring集成中的JDBC支持特性涵盖了我的需求。您可以使用出站通道适配器向RDBMS请求异步业务逻辑执行，并在另一个带有入站通道适配器的JVM上运行业务逻辑。

Answer 2

我认为您无法在另一个JVM中直接启动线程。由于您没有使用消息队列，所以最好使用RMI来调用不同JVM上的另一个进程上的方法，后者反过来可以为您启动线程。