线程捕获异常的方式

只需要修改Executor产生线程的方式，即为每一个线程添加一个实现了Thread.UncaughtExceptionHandler接口的异常处理器来捕获线程发生的异常。例子如下：（Thinking in java 中demo）

class ExceptionThread2 implements Runnable {    public void run() {        Thread t = Thread.currentThread();        System.out.println("run() by" + t);        System.out.println("eh =" + t.getUncaughtExceptionHandler());        throw new RuntimeException();    }}class MyUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {    public void uncaughtException(Thread t, Throwable e) {        System.out.println("caught...." + e);    }}class HandlerThreadFactory implements ThreadFactory {    public Thread newThread(Runnable r) {        // 将当前线程绑定异常处理器        System.out.println(this + "创建线程");        Thread thread = new Thread(r);        thread.setUncaughtExceptionHandler(new MyUncaughtExceptionHandler());        System.out.println("eh =" + thread.getUncaughtExceptionHandler());        return thread;    }}public class ExceptionThread {    public static void main(String[] args) {        ExecutorService exec = Executors.newCachedThreadPool(new HandlerThreadFactory());        exec.execute(new ExceptionThread2());    }}