java - Executor、线程池的捕获异常

Question

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

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

Answer 1

您可以使用方法newFixedThreadPool的重载，该方法接受ThreadFactory:

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