多线程

spring schedualing.concurrent包下提供多线程实现
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor
ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
taskExecutor.setCorePoolSize(CORE_POOL_SIZE);
taskExecutor.setMaxPoolSize(MAX_POOL_SIZE);
taskExecutor.setQueueCapacity(QUEUE_CAPACITY);
taskExecutor.initialize();
taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());
return taskExecutor;

ThreadFactory factory = r -> new Thread(r, "test-thread-pool");
ThreadPoolExecutor executor = new ThreadPoolExecutor(5, 5,0L, TimeUnit.SECONDS, queue, factory, new ThreadPoolExecutor.CallerRunsPolicy())