Spreadsheet::WriteExcel数据结构

https://metacpan.org/pod/Spreadsheet::WriteExcel

workbook

• new($filename)：得到一个新的workbook
  my $workbook = Spreadsheet::WriteExcel->new(‘filename.xls’);
• add_worksheet()：得到一个空白的worksheet
  my $worksheet = $workbook->add_worksheet();

worksheet

• write($row, $column, $token, $format)：向worksheet写data
  $worksheet->write(0, 0, ‘Hi Excel!’);