动态创建线程（多线程）处理大量数据

import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class BatchDownLoadNeLogByThread {
    // 导入数据
    public boolean importData(List<String> list) {
    
        // 线程数
        int RunSize =list.size();
        // 创建一个线程池
    //    ThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(RunSize);
        ExecutorService executor = Executors.newCachedThreadPool();
    //    ExecutorService executor = Executors.newSingleThreadExecutor();
        CountDownLatch countDownLatch = new CountDownLatch(RunSize);
        try {
            for (int i = 0; i < RunSize; i++) {
                String newlist = list.get(i);
                ImportTask task = new ImportTask(newlist, countDownLatch);
                executor.execute(task);
            }
            countDownLatch.await();// 主线程等待所有线程完成任务
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return false;
        } 
        // 所有线程完成任务后的一些业务
        System.out.println("数据下载完成!");
        // 关闭线程池
        executor.shutdown();
        return true;

    }

    class ImportTask implements Runnable {
        private String newNe;
        private CountDownLatch countDownLatch;

        public ImportTask( String newNe, CountDownLatch countDownLatch) {
            this.newNe = newNe;
            this.countDownLatch = countDownLatch;
        }

        @Override
        public void run() {
            boolean flag1 = false;
            try {
                
                if (newNe != null) {
                    // 业务逻辑
                    
                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally{
                countDownLatch.countDown();// 发出线程任务完成的信号
            }

        }
    }

}