@Configuration
@EnableAsync
public class AsyncTaskConfig implements AsyncConfigurer {
    @Override
    @Bean
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor threadPoolTaskExecutor=new ThreadPoolTaskExecutor();
        //設定執行緒數
        threadPoolTaskExecutor.setCorePoolSize(10);
 
        //最大執行緒數
        threadPoolTaskExecutor.setMaxPoolSize(50);
        //保持活躍的秒數
        threadPoolTaskExecutor.setKeepAliveSeconds(5);
        //等待佇列容量，執行緒數不夠會等待
        threadPoolTaskExecutor.setQueueCapacity(100);
        //初始化
        threadPoolTaskExecutor.initialize();
        return threadPoolTaskExecutor;
 

    }

    @Override
    @Bean
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return null;
    }
}