SpringBoot-多线程

一、配置

@Configuration
@EnableAsync //启用异步任务
public class ThreadPoolConfig {
    @Bean("taskExecutor")
    public ThreadPoolTaskExecutor executor(){
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
      	//配置核心线程数
        executor.setCorePoolSize(15);
      	//配置最大线程数
        executor.setMaxPoolSize(30);
      	//配置队列大小
        executor.setQueueCapacity(1000);
      	//线程的名称前缀
        executor.setThreadNamePrefix("Executor-");
      	//线程活跃时间（秒）
        //executor.setKeepAliveSeconds(60);
      	//等待所有任务结束后再关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);
      	//设置拒绝策略
        //executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
      	//执行初始化
        executor.initialize();
        return executor;
    }
}

二、使用

方法上使用，添加@Async("asyncServiceExecutor")
方法内使用:

@Autowired
private ThreadPoolTaskExecutor executor;

final CountDownLatch countDownLatch = new CountDownLatch(j);

三、执行流程

四、注意点