自定义线程池

自定义线程池

package com.intell.config;
​
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;
​
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
​
@Component
public class CustomThreadPool {
​
    //核心线程数
    private final int corePoolSize = 3;
​
    //最大线程数量
    private final int maxPoolSize = 8;
​
    //线程存活时间
    private final int aliveTime = 30;
​
    
    private final ThreadPoolExecutor threadPoolExecutor;
​
    public  CustomThreadPool(){
        this.threadPoolExecutor = create();
    }
​
    public ThreadPoolExecutor create(){
        return new ThreadPoolExecutor(
                corePoolSize,
                maxPoolSize,
                aliveTime,
                TimeUnit.SECONDS,
                new LinkedBlockingQueue<>());
    }
​
    public void start(Runnable runnable){
        threadPoolExecutor.execute(runnable);
    }
​
​
}
​

自定义线程池方便控制线程不造成资源浪费

线程池可自定义拒绝策略，阻塞队列

Thread.sleep(time) 睡眠的是内部线程，当前方法的线程，如果睡眠被打断会抛出异常