捕获执行器异常，线程池 [英] Catch exception for Executor, thread pool

问题描述

对于一个线程，我通过以下代码段捕获了未捕获的异常。但是，对于 ExecutorService executor = Executors.newFixedThreadPool（10）; ，如何捕获未捕获的异常？

For one thread, I catch the uncaught exception via below code segments. However, for ExecutorService executor = Executors.newFixedThreadPool(10);, how can I catch uncaught exception?

Thread.UncaughtExceptionHandler h = new Thread.UncaughtExceptionHandler() {
    public void uncaughtException(Thread th, Throwable ex) {
        System.out.println("Uncaught exception: " + ex);
    }
};

推荐答案

您可以使用方法<$ c的重载$ c> newFixedThreadPool ，它接受 ThreadFactory ：

You can use the overload of the method newFixedThreadPool, which accepts a ThreadFactory:

Thread.UncaughtExceptionHandler eh = ...;
ThreadFactory factory = r -> {
    Thread t = new Thread(r);
    t.setUncaughtExceptionHandler(eh);
    return t;
};
ExecutorService executor = Executors.newFixedThreadPool(10, factory);

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