java-多线程并发，CompletableFuture

//无返回值
 @Override
    public void execCreateYmDetDataSubTask(YmDetCreateWorkerDto ymDetCreateWorkerDto){
       List<Long> sendIdList = ymDetCreateWorkerDto.getSendIdList();
       List<List<Long>> subLists = Lists.partition(sendIdList, 10);
       List<CompletableFuture<Void>> completableFutures = new ArrayList<>();
       for(List<Long> subList : subLists){
           CompletableFuture<Void> completableFuture = CompletableFuture.runAsync(()->{
               createYmDetData(subList,ymDetCreateWorkerDto.getBillYm(),ymDetCreateWorkerDto.getVerifyTaskId());
           },pool);
           completableFutures.add(completableFuture);
       }
       //本次子任务执行完毕
       CompletableFuture.allOf(completableFutures.toArray(new CompletableFuture[0])).join();
       List<ChildTaskStatusDto> childTaskStatusDtoList = new ArrayList<>();
       //TODO 子任务数据组装
        try {
          batchService.updateChildTaskStatusBatch(ymDetCreateWorkerDto.getBusiBatchId(),childTaskStatusDtoList);
        } catch (WorkerException e) {
            throw new BaseException(e);
        }
    }

 

//有返回值

    private List queryBatchByIds(List<Long> ids, Integer current, Integer size) {
        List<BillBatchAdjTmpFileDTO> list = new ArrayList<>();
        if (CollectionUtils.isEmpty(ids)) {
            return list;
        }
        //截取当前需要处理的id数
        List<Long> subList = BillUtils.getSubIdList(ids, current, size);
        //获取所有数据
        List<BillAdjManDetTmp> billAdjManDetTmps = super.listByIds(subList);
        List<CompletableFuture<BillBatchAdjTmpFileDTO>> futures = new ArrayList<>();
        for (BillAdjManDetTmp manDet : billAdjManDetTmps) {
            CompletableFuture<BillBatchAdjTmpFileDTO> billAdjSendErrFileDtoCompletableFuture = CompletableFuture.supplyAsync(() -> {
                return getBillAdjSendErrFileDto(manDet);
            },pool);
            futures.add(billAdjSendErrFileDtoCompletableFuture);
        }
        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
        futures.forEach(n->list.add(n.join()));
        return list;
    }