sprngboot使用@Async实现异步调用三：自定义线程池

1. 注意你定义的是user-taskExecutor

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;


/***
 * 定义线程池
 */
@Configuration
@EnableAsync
public class ThreadPoolConfig {
    @Bean("user-taskExecutor")
    public Executor taskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(10);
        executor.setMaxPoolSize(100);
        executor.setQueueCapacity(200);
        executor.setKeepAliveSeconds(60);
        executor.setThreadNamePrefix("user-taskExecutor-");
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.setWaitForTasksToCompleteOnShutdown(true);
        executor.setAwaitTerminationSeconds(60);
        return executor;
    }

}

2 在普通的方法实现上面，只需要添加 @Async(“user-taskExecutor”)就好了

Java会自动给我们用刚才的线程池，不信可以用Jconsole.exe查看

    @Override
    @Async("user-taskExecutor")
    public void doTaskThree() {
        System.out.println("开始做任务三");
        long start = System.currentTimeMillis();
        try {
            Thread.sleep(random.nextInt(10000));
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        long end = System.currentTimeMillis();
        System.out.println("完成任务三，耗时：" + (end - start) + "毫秒");
    }

3. 怎么查看是否用到了定义的线程池

3.1 Jconsole.exe

3.2 查看日志，但是我的日志里没有，只能用Jconsole.exe了