Spring添加线程池

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;
    }
}