public class ScmcommissionLineServiceImpl{//导入数据public void importData(List list){//500分一组int count = 500;int listSize = list.size();//线程数int RunSize = (listSize / count)+1;
ThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(RunSize);
CountDownLatch countDownLatch = new CountDownLatch(RunSize);for (int i = 0; i < RunSize; i++) {
List newList = null ;if((i+1)==RunSize){int startIndex = (i*count);;int endIndex = list.size();
newList =list.subList(startIndex,endIndex);
}else{int startIndex = i*count;;int endIndex = (i+1)*count-1;
newList =list.subList(startIndex,endIndex);
}
ImportTask task= new ImportTask (newList,countDownLatch);
executor.execute(task);
}
countDownLatch.await(); //主线程等待所有线程完成任务//所有线程完成任务后的一些业务System.out.println("插入数据完成!");
.....//关闭线程池executor.shutdown();
}
}class ImportTask implements Runnable{private List list;private CountDownLatch countDownLatch;public ImportTask (List list,CountDownLatch countDownLatch){this.list = list ;this.countDownLatch=countDownLatch;
}
@Overridepublic void run() {if(null!=list){//业务逻辑}
countDownLatch.countDown();//发出线程任务完成的信号}
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原文链接：https://blog.csdn.net/weixin_38158701/article/details/84966713
//最大线程数控制
private static int MAX_THREADS= 5;
//跑批分页大小
private static int EXPIRED_PAGE_SIZE = 30;
private void dataHandler(List
class SyncTask implements Runnable {
private List
public SyncSyncTask(List
@Override
public void run() {
if (!CollectionUtils.isEmpty(list)) {
try {
semaphore.acquire();
list.stream().forEach(fileDto -> {
//业务处理
});
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
semaphore.release();
}
}
//线程任务完成
countDownLatch.countDown();
}
}
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