ThreadPools中的异常处理 [英] Exception handling in ThreadPools

问题描述

我有一个ScheduledThreadPoolExecutor，似乎正在吃异常。如果提交的Runnable抛出异常，我想要我的执行者服务通知我。

I have a ScheduledThreadPoolExecutor that seems to be eating Exceptions. I want my executor service to notify me if a submitted Runnable throws an exception.

例如，我想要下面的代码至少打印出IndexArrayOutOfBoundsException的stackTrace

For example, I'd like the code below to at the very least print the IndexArrayOutOfBoundsException's stackTrace

threadPool.scheduleAtFixedRate(
  new Runnable() {
    public void run() {
      int[] array = new array[0];
      array[42] = 5;
    }
  },
  1000,
  1500L,
  TimeUnit.MILLISECONDS);

作为一个问题。有没有办法为ScheduledThreadPoolExecutor编写一般的try catch块？

As a side question. Is there a way to write a general try catch block for a ScheduledThreadPoolExecutor?

//////////原始问题的结尾////// ////////

//////////END OF ORIGINAL QUESTION //////////////

如下所示，Decorator工作正常。

As suggested the following Decorator works well.

public class CatcherTask implements Runnable{

    Runnable runMe;

    public CatcherTask(Runnable runMe) {
        this.runMe = runMe;
    }

    public void run() {
        try {
            runMe.run();
        } catch (Exception ex){
            ex.printStackTrace();
        }
    }
}

推荐答案

我写了一个小的发布关于这个问题一段时间。您有两个选择：

I wrote a small post about this problem a while ago. You have two options:

1. 使用解决方案由Colin Herbert或


2. 使用修改版本的Mark Peters 解决方案，而不是分配一个 UncaughtExceptionHandler 将每个提交的可运行文件包装成可运行的您自己执行（调用运行）在try-catch块内的真正可运行的。

1. Use the solution provided by Colin Herbert or
2. use a modified version of Mark Peters solution but instead of assigning a UncaughtExceptionHandler you wrap each submitted runnable into a runnable of your own which executes (calls run) the real runnable inside a try-catch-block.

编辑

如Mark所指出的，将 Runnable 传递到 ScheduledExecutorService 而不是传递给 ThreadFactory 的那个。

EDIT
As pointed out by Mark, it's important to wrap the Runnable passed to ScheduledExecutorService instead of the one passed to the ThreadFactory.

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