java - 如何在后台线程中正确停止 sikuli？

Question

我在后台线程中有简单的 sikuli 等待操作:

public static void main(String[] args) {
    Runnable rn = () -> {
        Screen s = new Screen();
        try {
            s.wait(imgPattern, 5);
        } catch (FindFailed e) {
            e.printStackTrace();
        }
        System.out.println("Finished wait.");
    };

    Thread th = new Thread(rn);
    th.start();

    try {
        Thread.sleep(1000);
    } catch (InterruptedException e1) {
    }

    th.interrupt();
    try {
        th.join();
    } catch (InterruptedException e) {
    }
    System.out.println("Finished main.");
}

当我尝试中断和停止后台线程时，我得到了 java.lang.InterruptedException，但 sikuli 仍然有效。这是程序的输出:

java.lang.InterruptedException: sleep interrupted
    at java.lang.Thread.sleep(Native Method)
    at java.awt.Robot.delay(Unknown Source)
    at org.sikuli.script.RobotDesktop.delay(RobotDesktop.java:240)
    at java.awt.Robot.autoDelay(Unknown Source)
    at java.awt.Robot.afterEvent(Unknown Source)
    at java.awt.Robot.mouseMove(Unknown Source)
    at org.sikuli.script.RobotDesktop.doMouseMove(RobotDesktop.java:61)
    at org.sikuli.script.RobotDesktop.smoothMove(RobotDesktop.java:165)
    at org.sikuli.script.RobotDesktop.smoothMove(RobotDesktop.java:145)
    at org.sikuli.script.Mouse.move(Mouse.java:361)
    at org.sikuli.script.Mouse.move(Mouse.java:331)
    at org.sikuli.script.Mouse.init(Mouse.java:60)
    at org.sikuli.script.Screen.initScreens(Screen.java:107)
    at org.sikuli.script.Screen.<clinit>(Screen.java:72)
    at SikuliTest.lambda$0(SikuliTest.java:12)
    at java.lang.Thread.run(Unknown Source)

FindFailed:     /C:/imgPatternPath.png: (18x14) in S(0)[0,0 1366x768] E:Y, T:3,0
  Line 2759, in file Region.java

    at org.sikuli.script.Region.wait(Region.java:2759)
Finished wait.
Finished main.
    at SikuliTest.lambda$0(SikuliTest.java:14)
    at java.lang.Thread.run(Unknown Source)

如何正确地阻止 sikuli 工作？

Answer 1

关于中断的工作原理可能有些困惑。引自 this回答，

Thread.interrupt() sets the interrupted flag of the target thread. Then code running in that target thread MAY poll the interrupted status and handle it appropriately. Some methods that block such as Object.wait() may consume the interrupted status immediately and throw an appropriate exception (usually InterruptedException)

Interruption in Java is not pre-emptive. Put another way both threads have to cooperate in order to process the interrupt properly. If the target thread does not poll the interrupted status the interrupt is effectively ignored.

Polling occurs via the Thread.interrupted() method which returns the current thread's interrupted status AND clears that interrupt flag. Usually the thread might then do something such as throw InterruptedException.

这意味着Sikuli wait可能没有正确处理中断(没有轮询中断状态)并保持正常运行。