线程池注入

@Configuration
public class BeanConfig {

	/** Set the ThreadPoolExecutor's core pool size. */
	private int corePoolSize = 3;
	/** Set the ThreadPoolExecutor's maximum pool size. */
	private int maximumPoolSize = 3;
	/** Set the capacity for the ThreadPoolExecutor's BlockingQueue. */
	private int queueCapacity = 5;

	@Bean
	public ExecutorService getExecutorService() {
		ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(corePoolSize, maximumPoolSize, 4, TimeUnit.SECONDS,
				new LinkedBlockingDeque<>(queueCapacity), new ThreadPoolExecutor.CallerRunsPolicy());
		return threadPoolExecutor;
	}

}

使用

	@Autowired
	ExecutorService executorService;