public void writeList2File(List<Long> lines, String filePath) {
        File file = new File(filePath);
        // 判断文件是否存在
        if (!file.exists()) {
            file.createNewFile();
        }
        // 遍历写入
        BufferedWriter bw = new BufferedWriter(new FileWriter(file));
        for (long lineL : lines) {
            bw.write(long2DateString(lineL) + "rn");
        }
        bw.flush();
        bw.close();
}