How do I overcome "Ole::Storage::FormatError: OLE2 signature is invalid" error when re-saving the doc is not an option?

Question

我正在使用 Rails 4.2.7 并且刚刚将电子表格 gem 添加到我的 Gemfile

gem 'spreadsheet'

遗憾的是，当我对以“.xls”结尾的文件执行此调用时

    book = Spreadsheet.open file_location

我收到以下错误。不幸的是，无法将此文档重新保存为另一种 Excel 格式（我的电脑上什至没有安装 Excel）。我该如何解析这个 xls 文件？如果可以解决问题，我愿意使用另一个 gem。

Ole::Storage::FormatError: OLE2 signature is invalid
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:378:in `validate!'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:370:in `initialize'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:112:in `new'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:112:in `load'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:79:in `initialize'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:85:in `new'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/ruby-ole-1.2.12/lib/ole/storage/base.rb:85:in `open'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/spreadsheet-1.1.4/lib/spreadsheet/excel/reader.rb:1282:in `setup'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/spreadsheet-1.1.4/lib/spreadsheet/excel/reader.rb:140:in `read'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/spreadsheet-1.1.4/lib/spreadsheet/excel/workbook.rb:32:in `open'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/spreadsheet-1.1.4/lib/spreadsheet.rb:67:in `open'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/spreadsheet-1.1.4/lib/spreadsheet.rb:73:in `open'
    from /Users/davea/Documents/workspace/myproject/app/services/xls_to_my_object_times_converter_service.rb:12:in `get_my_object_times'
    from /Users/davea/Documents/workspace/myproject/app/services/xls_processor_service.rb:15:in `process_page_data'
    from /Users/davea/Documents/workspace/myproject/app/services/abstract_import_service.rb:82:in `process_my_object_data'
    from (irb):3
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/console.rb:110:in `start'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/console.rb:9:in `start'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'

Answer 1

我在尝试使用电子表格时遇到了一些问题。那是一段时间以前的事了，所以我不记得到底发生了什么，但我相信这是一个类似的 OLE 错误。它也从那时起进行了更新。但是，既然你提到你会考虑另一个 gem，我切换到 roo，它对我来说效果很好。一个非常重要的好处是它可以处理许多不同的格式，而不仅仅是 Excel 兼容。

How do I overcome "Ole::Storage::FormatError: OLE2 signature is invalid" error when re-saving the doc is not an option?

How do I overcome "Ole::Storage::FormatError: OLE2 signature is invalid" error when re-saving the doc is not an option?

ruby

xls

ole

spreadsheet

ruby-on-rails-4