Java 文件上传校验与更新 - checkIsUploadAndUpdateFile 方法

private void checkIsUploadAndUpdateFile() {
    try {
        File folder = new File("D:/mapSycTrain/"); // 本地文件夹路径
        File[] files = folder.listFiles();
        if (files != null) {
            synchronized (allMapSycTrainMap) {
                for (File file : files) {
                    String[] fileName1 = file.getName().split("-");
                    String[] fileName2 = fileName1[1].split("\\.");
                    Long trainingGroundIdByLocal = Long.valueOf(fileName1[0]);//文件训练场ID
                    Long timeByLocal = Long.valueOf(fileName2[0]);//文件时间版本
                    
                    MapSycTrain value = allMapSycTrainMap.get(trainingGroundIdByLocal);
                    if (value != null) {
                        if (!Objects.equals(value.time, timeByLocal)) {
                            // 开启新的线程去操作
                            Thread fileOperationThread = new Thread(() -> {
                                // 把Detail数据深拷贝一份，(使用io线程写入文件)将内存中的数据（深拷贝的数据）更新到本地json文件
                                List<DetailRouteMapData> detailRouteMapDataList = getDetailRouteMapDataListByTrainingGroundIdOrProjectRouteMapDataId(trainingGroundIdByLocal);
                                try {
                                    List<DetailRouteMapData> copiedList = deepCopy(detailRouteMapDataList);
                                    String json = JSON.toJSONString(copiedList);
                                    String filePath = "D:/mapSycTrain/" + file.getName();
                                    reName("D:/mapSycTrain/" + file.getName(), "D:/mapSycTrain/" + trainingGroundIdByLocal + "-" + value.time + ".json"); // 修改文件名
                                } catch (IOException | ClassNotFoundException e) {
                                    throw new RuntimeException(e);
                                }
                            });
                            fileOperationThread.start();
                        }
                    } else {
                        // 删除无效文件
                        file.delete();
                    }
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}