同时执行多个Spring@计划任务

我试图在spring boot上同时运行多个计划任务，但实际上它们运行队列（一个接一个，而不是并行）

这是我的简单服务：

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

@Service
public class MyScheduleDemo {

    @Scheduled(fixedDelay = 5000, initialDelay = 1000)
    public void taskA() throws InterruptedException {
        System.out.println("[A] Starting new cycle of scheduled task");

        // Simulate an operation that took 5 seconds.
        long startTime = System.currentTimeMillis();
        while (System.currentTimeMillis() - startTime <= 5000);

        System.out.println("[A] Done the cycle of scheduled task");
    }

    @Scheduled(fixedDelay = 5000, initialDelay = 2000)
    public void taskB() throws InterruptedException {
        System.out.println("[B] Starting new cycle of scheduled task");

        System.out.println("[B] Done the cycle of scheduled task");
    }
}

但是，它应该是这样的：

[A] Starting new cycle of scheduled task
[B] Starting new cycle of scheduled task
[B] Done the cycle of scheduled task
[A] Done the cycle of scheduled task

我做错了什么

这是我的配置：

@Configuration
@EnableAsync
@EnableScheduling
public class AsyncConfiguration implements AsyncConfigurer {

    @Override
    @Bean(name = "taskExecutor")
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(6);
        executor.setMaxPoolSize(50);
        executor.setQueueCapacity(100);
        executor.setThreadNamePrefix("customer-Executor-");
        executor.initialize();
        return executor;
    }
}

---

您应该使用

TaskScheduler

@Bean
public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
    ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
    threadPoolTaskScheduler.setPoolSize(THREADS_COUNT);
    return threadPoolTaskScheduler;
}

---

其中

THREADS\u COUNT

-应并行执行的任务总数。如果我理解正确，您只有2个作业，因此需要2个线程

您将

TaskExecutor

与

TaskScheduler

混淆，因为您没有配置后者，因此所有作业都以同步模式运行（默认）。谢谢@M.Deinum！！请记住，每个默认的

@Async

注释也使用此调度器。如果使用

@Scheduled

并调用

@Async

方法，则在线程可用之前不会执行这些方法。

@Bean
public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
    ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
    threadPoolTaskScheduler.setPoolSize(THREADS_COUNT);
    return threadPoolTaskScheduler;
}