线程池处理任务案例

package com.vanke.sampling.dao;

import com.gexin.rp.sdk.base.uitls.RandomUtil;
import com.google.common.collect.Lists;

import java.text.SimpleDateFormat;
import java.util.*;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class test {

    public static void main(String[] args) throws InterruptedException {
        SimpleDateFormat fmt=new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss:SSS'Z'");
        List<String> stringList=new ArrayList<>();
        for (int i=0;i<20;i++){
            stringList.add(RandomUtil.randomUUID());
        }
        //TODO:总线程数 10
        final Integer threadSize=10;//Runtime.getRuntime().availableProcessors();
        //TODO:总数据量 40w
        final Long total=Long.parseLong(String.valueOf(stringList.size()));
        if (total>0){
            //TODO:每个线程将执行插入操作的数据条目
            List<String> temp;
            List<test1> list= Lists.newLinkedList();
            Long pageSize=(total%threadSize==0)?total/threadSize:total/threadSize+1;
            ExecutorService executorService=Executors.newFixedThreadPool(threadSize);
            for (int i=1;i<=threadSize;i++){
               temp= page(stringList,2,i);
                list.add(new test1(temp));
            }
            //TODO:多线程批量插入数据-逻辑
            executorService.invokeAll(list);
        }
    }

    public static List<String> page(List<String> dataList, int pageSize,int currentPage) {
        List<String> currentPageList = new ArrayList<>();
        if (dataList != null && dataList.size() > 0) {
            int currIdx = (currentPage > 1 ? (currentPage - 1) * pageSize : 0);
            for (int i = 0; i < pageSize && i < dataList.size() - currIdx; i++) {
                String data = dataList.get(currIdx + i);
                currentPageList.add(data);
            }
        }
        return currentPageList;
    }

}

class test1 implements Callable<Boolean>{

    private List<String> list;

    test1(List<String> teststr){
        list=teststr;
    }

    @Override
    public Boolean call() throws Exception{
        if(!list.isEmpty()){
　　　　　　// dosomething 这里的业务逻辑实例只能手动管理维护,不能依赖于@Autowried
            for (String str:list){
                System.out.println(Thread.currentThread().getName()+"-"+str);
            }
        }
        return true;
    }
}