java使用线程池处理并发事务

1.创建线程池对象

import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

public class ClosingScheduler {
    private static ThreadPoolTaskExecutor executor = getThreadPool();


    public static ThreadPoolTaskExecutor getThreadPool() {
        ThreadPoolTaskExecutor threadPoolTaskExecutor = new ThreadPoolTaskExecutor();
        //最小线程数
        threadPoolTaskExecutor.setCorePoolSize(500);
        //最大线程数
        threadPoolTaskExecutor.setMaxPoolSize(2000);
        //空闲线程存活时间
        threadPoolTaskExecutor.setKeepAliveSeconds(200);
        //队列中最大线程
        threadPoolTaskExecutor.setQueueCapacity(2000);
        //初始化
        threadPoolTaskExecutor.initialize();
        return threadPoolTaskExecutor;
    }
}

2.创建一个任务类

public class MessageTask implements Runnable {

    //
    private Map data;
    
    // 构造方法，传入你需要处理的数据
    public MessageTask(Map data) {
        this.data = data;
    }
 
    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName());
    }
}

3.新建任务对象，并加入线程池进行处理

public static void main(String[] args) {
        for (int i = 1;i < 20;i++) {
            Map data = new HashMap<>();
            data.put("second",i);
            MessageTask closeTask = new MessageTask(data);
            executor.execute(closeTask);
        }
}