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在SpringBoot中，频繁创建线程比较消耗性能，所以采用线程池的形式

1、定义ThreadPoolTaskExecutor 2、在SpringBean方法上添加 @Async("serviceTask")注解即可

@EnableAsync @Configuration public class ThreadPoolConfig {

    @Bean("serviceTask")

    public ThreadPoolTaskExecutor serviceTask() {         ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();         executor.setCorePoolSize(10);         executor.setMaxPoolSize(20);         executor.setQueueCapacity(10);         executor.setKeepAliveSeconds(60);         executor.setThreadNamePrefix("service-task");         executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());         return executor;     } }

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