当方法开始时启动固定延迟调度程序并在完成时停止

Question

我有一个 Spring 引导网络应用程序。

我想在方法启动时启动一个 fixedDelayed 计划作业。并在 someMethod 方法完成时停止预定作业。我阅读了文档，但我不明白如何。我想在 someMethod 仍在工作时每 30 秒写一些东西到数据库。

这是伪代码。有人有想法吗？

public void someMethod() {

    //Start scheduledLogger() to work every 30 seconds

    //...
    //Do something taking long time

    //Stop scheduledLogger() job
}

private void scheduledLogger() {
    //Log to database
}

Answer 1

你可以这样做：

public void someMethod() 
   {
       //Start scheduledLogger() to work every 30 seconds
       TimerTask tasknew = new TimerTask(){
            @Override
            public void run()
            {
                scheduledLogger();

            }
        };
       Timer timer = new Timer();

       // scheduling the task
       timer.scheduleAtFixedRate(tasknew, new Date(), 3000);      

        //Do something taking long time
        try
        {
            Thread.sleep(20000);
        } catch (InterruptedException e)
        {
            e.printStackTrace();
        }
        //Stop scheduledLogger() job
        // terminating the timer
        timer.cancel();
    }

    private void scheduledLogger() {
        //Log to database
        System.out.println("Log to database at "+new Date());
    }

当方法开始时启动固定延迟调度程序并在完成时停止

Start a fixed delayed schedular when a method start and stop when finishes

java

spring

quartz-scheduler

spring-scheduled

spring-boot