springboot单类集中定义线程池

1、在启动类上加注解  @EnableAsync

2、定义线程池的类

package com.javabase.Thread;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import java.util.concurrent.*;
public class EventThreadPool extends ThreadPoolExecutor {
    /**
     * 定义线程工厂名称
     */
    private static ThreadFactory HANDLEREMINDWAY_FACTORY = new ThreadFactoryBuilder()
            .setNameFormat("EventThreadPool-%d").build();
    public EventThreadPool() {
        super(Runtime.getRuntime().availableProcessors(), Runtime.getRuntime().availableProcessors() * 30,
                20, TimeUnit.SECONDS, new ArrayBlockingQueue<>(1000), HANDLEREMINDWAY_FACTORY,new CallerRunsPolicy());
    }
//    public ThreadPoolExecutor getThreadPoolExecutor() {
//        return new ThreadPoolExecutor(Runtime.getRuntime().availableProcessors(), Runtime.getRuntime().availableProcessors() * 30,
//            20, TimeUnit.SECONDS, new ArrayBlockingQueue<>(1000));
//    }
    public EventThreadPool(int corePoolSize, int maximumPoolSize, long keepAliveTime) {
        /**
         *
         * (ArrayBlockingQueue读写只有一个锁（效率更高），LinkedBlockingQueue读写锁分离)
         * LinkedBlockingQueue即无界队列.
         * 将ArrayBlockingQueue即无界队列的大小设置为1000.
         * 使用无界队列
         * 将LinkedBlockingQueue即无界队列的大小设置为500.
         * 将导致在所有 corePoolSize线程都忙的情况下将新任务加入队列,
         * 这样，创建的线程就不会超过 corePoolSize, 而且当排队的任务超过500时，将拒绝执行
         */
        super(corePoolSize, maximumPoolSize, keepAliveTime, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(1000), Executors
                .defaultThreadFactory());
    }
}

3、注入工厂到spring中

package com.javabase.Thread;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.concurrent.ThreadPoolExecutor;
@Configuration
public class ThreadPoolConfig {
    @Bean("RewardThreadPool")
    public ThreadPoolExecutor rewardThreadPool() {
        return new EventThreadPool();
    }
    @Bean("reportThreadPool")
    public ThreadPoolExecutor reportThreadPool() {
        return new EventThreadPool();
    }
    @Bean("roomReservationThreadPool")
    public ThreadPoolExecutor roomReservationThreadPool() {
        return new EventThreadPool();
    }
}

4、在自己的方法中使用

package com.javabase.Thread;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import java.time.LocalDateTime;
/**
 * 构建执行定时任务
 * TODO
 */
@Component
@EnableScheduling
public class ScheduledTask3 {
    private Logger logger = LoggerFactory.getLogger(ScheduledTask3.class);
 
    private int fixedDelayCount = 1;
    private int fixedRateCount = 1;
    private int initialDelayCount = 1;
    private int cronCount = 1;
 
  /*  @Scheduled(fixedDelay = 5000)        //fixedDelay = 5000表示当前方法执行完毕5000ms后，Spring scheduling会再次调用该方法
    public void testFixDelay() {
        logger.info("===fixedDelay: 第{}次执行方法", fixedDelayCount++);
    }
 
    @Scheduled(fixedRate = 5000)        //fixedRate = 5000表示当前方法开始执行5000ms后，Spring scheduling会再次调用该方法
    public void testFixedRate() {
        logger.info("===fixedRate: 第{}次执行方法", fixedRateCount++);
    }
 
    @Scheduled(initialDelay = 1000, fixedRate = 5000)   //initialDelay = 1000表示延迟1000ms执行第一次任务
    public void testInitialDelay() {
        logger.info("===initialDelay: 第{}次执行方法", initialDelayCount++);
    }*/
 
    /*@Scheduled(cron = "0 0/1 * * * ?")  //cron接受cron表达式，根据cron表达式确定定时规则
    public void testconfigureTasks() {
        logger.info("===initialDelay: 第{}次执行方法", cronCount++);
    }*/
    @Async("RewardThreadPool")
    @Scheduled(cron = "0/1 * * * * ?")
    public void testtaskExecutor() {
        logger.info("ScheduledTask3定时任务开始 :{} " + "\r\n线程 : {}", LocalDateTime.now().toLocalTime(), Thread.currentThread().getName());
        logger.info("===initialDelay: 第{}次执行方法", cronCount++);
    }
}