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我需要从 xls 文件中获取有关 gem 'roo' 的信息。当我尝试读取文件时，出现错误。

请帮助修复此错误！

我的代码：

require 'roo'
require 'spreadsheet'
require 'open-uri'

x = Roo::Excel.new("http://EXAMPLE.COM/EXAMPLE.xls")
x.cell 31,'F'

RuntimeError：来自 /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet/excel/reader.rb:75:in 的未知代码页 0x906c

block in encoding' from /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet/excel/reader.rb:74:in 从 /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet/excel/reader.rb:74:in read_codepage' 中获取' encoding' from /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet/excel/reader.rb:211:in 来自 /home/hender/.rvm /gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet/excel/reader.rb:821:in read_workbook' from /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet/excel/reader.rb:135:in read' from /home/hender/.rvm/gems/ruby-2.1.2/gems /spreadsheet-0.9.7/lib/spreadsheet/excel/workbook.rb:32:in open' from /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet.rb:63:in open' 来自 /home/hender/.rvm/gems/ruby-2.1.2/gems/spreadsheet-0.9.7/lib/spreadsheet .rb:69:in open' from /home/hender/.rvm/gems/ruby-2.1.2/gems/roo-1.13.2/lib/roo/excel.rb:40:in block in initialize' from /home/hender/.rvm/gems/ruby-2.1.2/gems/roo-1.13.2/lib/roo/base.rb:565:in block in make_tmpdir' from /home/hender/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tmpdir.rb:88:in mktmpdir' from / home/hender/.rvm/gems/ruby-2.1.2/gems/roo-1.13.2/lib/roo/base.rb:564:in make_tmpdir' from /home/hender/.rvm/gems/ruby-2.1.2/gems/roo-1.13.2/lib/roo/excel.rb:31:in initialize' 来自 /home/hender/helloapp/app/models/mode。 rb:26: new' from /home/hender/helloapp/app/models/mode.rb:26:in你好'
... 2 个级别...来自 /home/hender/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/console.rb:9:in start' from /home/hender/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:69:in console' 来自 / home/hender/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:40:in run_command!' from /home/hender/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands.rb:17:in '来自/home/hender/.rvm/gems/ruby- 2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in require' from /home/hender/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:inblock in require' 来自 /home/hender/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1。 1/lib/active_support/dependencies.rb:232:inload_dependency' from /home/hender/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in需要'来自 /home/hender/helloapp/bin/rails:8:in<top (required)>' from /home/hender/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in加载'来自 /home/hender/.rvm/gems/ruby-2.1.2/gems /activesupport-4.1.1/lib/active_support/dependencies.rb:241:inblock in load' from /home/hender/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:inload_dependency' 来自 /home/hender/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in load' from /home/hender/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in require' 来自 /home/hender/.rvm/rubies /ruby-2.1.2/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in require' from -e:1:in'2.1.2 :004 > ^C 2.1.2 :004 >##

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