java线程池

大神文章：https://www.jianshu.com/p/50fffbf21b39  ;

总结：
为了提高并行处理能力，或者想异步处理问题，可以使用线程池；
线程池减少了线程的创建，但是原先创建的线程会被新加入的任务重新赋值线程变量；

示例：

 

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Future;

import java.util.concurrent.LinkedBlockingQueue;

import java.util.concurrent.ThreadFactory;

import java.util.concurrent.ThreadPoolExecutor;

import java.util.concurrent.TimeUnit;

 

import com.google.common.util.concurrent.ThreadFactoryBuilder;
///////添加任务

    private static ExecutorService rnrThreadPool = new ThreadPoolExecutor(2, 100,

        60L, TimeUnit.MILLISECONDS,

        new LinkedBlockingQueue<Runnable>(20), namedThreadFactory, new ThreadPoolExecutor.AbortPolicy());

    

    

    public static void main(String[] args) {

     for(int i= 0; i< 100; i++) {

     if(i<2) {

     rnrThreadPool.submit(new RnrCallbackThread2(""+i, false));

     }else{

     rnrThreadPool.submit(new RnrCallbackThread2(""+i, true));

     }

     }

     }
////////任务体

package com.svw.mos.mno.vo.thread;

 

import java.util.Map;

import java.util.concurrent.Callable;

 

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

 

/**

 * 线程处理如下任务： 1，同步状态到核心层，2，获取基础厂包 3，查车型，设置车型 4，到核心基础场包下单

 */

public class RnrCallbackThread2 implements Callable<Map<String, String>> {

private static final Logger LOGGER = LoggerFactory.getLogger(RnrCallbackThread2.class);

private String reqId;

private boolean isSuccessRnr;

 

 

public RnrCallbackThread2(String reqId, boolean isSuccessRnr) {

this.reqId = reqId;

this.isSuccessRnr = isSuccessRnr;

 

}

 

@Override

public Map<String, String> call() throws Exception {

Thread.sleep(2000l);

LOGGER.info("threadName:{},reqId:{},issuccess:{}", Thread.currentThread().getName(), reqId, isSuccessRnr);

return null;

}

 

}