线程池、线程池知识巩固

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前言

这一章若伊框架里面的线程池倒是没啥讲解的，把代码贴上。主要整理一下自己对线程池知识点的巩固；

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一、若伊线程池配置

package com.ruoyi.framework.config;

import com.ruoyi.common.utils.Threads;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 线程池配置，就是定义了两个线程池，甩进spring容器里面。
 **/
@Configuration
public class ThreadPoolConfig {
    // 核心线程池大小
    private int corePoolSize = 50;

    // 最大可创建的线程数
    private int maxPoolSize = 200;

    // 队列最大长度
    private int queueCapacity = 1000;

    // 线程池维护线程所允许的空闲时间
    private int keepAliveSeconds = 300;

    @Bean(name = "threadPoolTaskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setMaxPoolSize(maxPoolSize);
        executor.setCorePoolSize(corePoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setKeepAliveSeconds(keepAliveSeconds);
        // 线程池对拒绝任务(无线程可用)的处理策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        return executor;
    }

    /**
     * 执行周期性或定时任务
     */
    @Bean(name = "scheduledExecutorService")
    protected ScheduledExecutorService scheduledExecutorService() {
        return new ScheduledThreadPoolExecutor(corePoolSize,
                new BasicThreadFactory.Builder().namingPattern("schedule-pool-%d").daemon(true).build(),
                new ThreadPoolExecutor.CallerRunsPolicy()) {
            @Override
            protected void afterExecute(Runnable r, Throwable t) {
                super.afterExecute(r, t);
                Threads.printException(r, t);
            }
        };
    }
}

二、使用步骤

	// 引入异步操作任务调度池
    private ScheduledExecutorService executor = SpringUtils.getBean("scheduledExecutorService");
    // 引入线程池
    private ThreadPoolTaskExecutor executor = SpringUtils.getBean("threadPoolTaskExecutor");

三、整理自己对线程的理解

直接用现成的，写的很清晰，等若伊读完了会单独讲解线程，锁之类的实战

转载于：https://blog.csdn.net/qq_43478694/article/details/123385279

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总结

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