尝试运行 Ruby On Rails 应用程序时出现 Sequel::AdapterNotFound

Question

我正在尝试让一个项目在我的系统上运行。我通过 GITHub 导入源代码，并使用 WEBrick 在本地运行它。当我这样做时，会打印以下错误：

=> Booting WEBrick
=> Rails 2.3.8 application starting on 0.0.0.0:3000
<internal:lib/rubygems/custom_require>:29:in `require': LoadError: 126: Det går inte att hitta den angivna modulen(*Translation: Cannot find the given module*.)   - C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql-2.8.1-x86-mingw32/lib/1.9/mysql_api.so (Sequel::AdapterNotFound)
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `block in require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql-2.8.1-x86-mingw32/lib/mysql.rb:7:in `rescue in <top (required)>'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql-2.8.1-x86-mingw32/lib/mysql.rb:2:in `<top (required)>'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `block in require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/adapters/mysql.rb:4:in `rescue in <top (required)>'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/adapters/mysql.rb:1:in `<top (required)>'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `block in require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/core.rb:249:in `block in tsk_require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/core.rb:72:in `block in check_requiring_thread'
        from <internal:prelude>:10:in `synchronize'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/core.rb:69:in `check_requiring_thread'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/core.rb:249:in `tsk_require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/database/connecting.rb:23:in `adapter_class'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/database/connecting.rb:61:in `connect'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.15.0/lib/sequel/core.rb:119:in `connect'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails_sequel-0.2.1/lib/rails_sequel/rails_sequel.rb:5:in `connect'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails_sequel-0.2.1/lib/rails_sequel.rb:8:in `<top (required)>'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `block in require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/rails/gem_dependency.rb:215:in `load'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/initializer.rb:307:in `block in load_gems'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/initializer.rb:307:in `each'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/initializer.rb:307:in `load_gems'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/initializer.rb:164:in `process'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/initializer.rb:113:in `run'
        from C:/Users/Soroush/AppData/Local/VirtualStore/Program Files/Git/foobar/projectxt/config/environment.rb:9:in `<top (required)>'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `block in require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
        from C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.8/lib/commands/server.rb:84:in `<top (required)>'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from script/server:3:in `<main>'

我用 Google 搜索了“Sequel::AdapterNotFound”、“LoadError126”、“mysql_api.so”，但似乎无法获得任何有价值的信息。

我找到了这个页面： http://permalink.gmane.org/gmane .comp.lang.ruby.sequel/2645 有人似乎有类似的问题，并回复询问运行 irb -rubygems -rmysql 是否返回错误。我这样做了，它给了我一个错误，说计算机上缺少 LIBMYSQL.dll。我不确定这是否有用，但我想我会在这里提到它。

有谁能提供解决问题的线索，或者给我一个寻找的方向？

Answer 1

重要的部分在这里：

LoadError: 126: Det går inte att hitta den angivna modulen(*Translation: Cannot find the given module*.) - C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql-2.8.1-x86-mingw32/lib/1.9/mysql_api.so

错误是由 Ruby MySQL gem 引发的，您通过运行 IRB 命令确认了这一点。您可能需要将 LIBMYSQL.dll 文件添加到计算机，就像它所说的那样。