Ruby on rails Rails-使用rubygems安装电子表格gem时出错

我希望能够在rails中处理excel spreadhseets。
因此，我正在使用

电子表格
库。

但是，当我使用rubygems安装电子表格时，我遇到了一个例外：

Successfully installed spreadsheet-0.7.1
1 gem installed
Installing ri documentation for spreadsheet-0.7.1...
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/internals.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/reader/biff8.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/reader.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/biff8.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/format.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/n_worksheet.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/workbook.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/worksheet.rb, skipping
Installing RDoc documentation for spreadsheet-0.7.1...
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/internals.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/reader/biff8.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/reader.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/biff8.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/format.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/n_worksheet.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/workbook.rb, skipping
unable to convert "\xE2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to GBK
for lib/spreadsheet/excel/writer/worksheet.rb, skipping`

然后在我的doSomethingController中，我编写了代码：

require 'spreadsheet'

但是服务器返回错误

cannot load such file -- spreadsheet

你能帮我弄清楚发生了什么，我如何修复异常吗

我的环境：

ruby 1.9.3
rubygem 1.8.16

检查您的宝石：

gem list

检查是否正在安装：

gem list | grep spreadsheet 

遵循使用说明，使用说明中还讨论了开发依赖关系：

hoe ~> 2.13   
rdoc ~> 3.10  

网站上有一个很棒的“入门”指南

wiki-也很有用。
您运行的Rails版本是什么？您可以忽略这些异常，它们仅在您安装Rdoc文档文件时发生，
电子表格
gem仍在安装。感谢您的帮助，我遵照您的建议，安装hoe~>2.13 Rdoc~>3.10电子表格~>0.7.1，并检查我的gems电子表格是否已由gem安装，但异常仍然存在，我想可能例外是关于gem而不是电子表格，我的rubygem无法将“\xE2”转换为UTF-8，从ASCII-8BIT转换为UTF-8再转换为GBKhi。我不知道为什么我不能在我的项目中加载电子表格库，当我创建一个新项目，然后加载库时一切都很顺利。谢谢。