HarmonyOS 读取内容不全

如果文件比较大，建议使用异步方法：

readFileSize(filesDir: string) {
  let filePath = filesDir + "/test.txt";
  fs.stat(filePath).then((stat: fs.Stat) => {
    console.info("get file info succeed, the size of file is " + stat.size);
  }).catch((err: BusinessError) => {
    console.error("get file info failed with error message: " + err.message + ", error code: " + err.code);
  });
}

关于查看手机内的文件，参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-faqs-V5/faqs-local-file-manager-18-V5