/**
   * 将一个文件转化为 PicMetaInfo 对象
   *
   * @param file
   * @return
   */
  public PicMetaInfo toPicMetaInfo(File file) {
    PicMetaInfo picMetaInfo = null;
    try {
      Metadata metadata = ImageMetadataReader.readMetadata(file);
      picMetaInfo = picInfoReader.toPicMetaInfo(metadata, file);

      return picMetaInfo;
    } catch (Exception e) {
      e.printStackTrace();
      return null;
    }
  }