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我得到這個錯誤而使用Rails服務器無法加載這樣的文件 - MySQL的/ mysql_api（LoadError）
C:/Ruby/lib/ruby/gems/2.0.0/gems/mysql-2.9.1-x86-mingw32/lib/mysql.rb:6:in `require': cannot load such file -- mysql/mysql_api (LoadError)
from C:/Ruby/lib/ruby/gems/2.0.0/gems/mysql-2.9.1-x86-mingw32/lib/mysql.rb:6:in `rescue in <top (required)>'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/mysql-2.9.1-x86-mingw32/lib/mysql.rb:2:in `<top (required)>'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `require'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `each'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `block in require'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `each'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `require'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler.rb:131:in `require'
from E:/ruby/config/application.rb:7:in `<top (required)>'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:74:in `require'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:74:in `block in <top (required)>'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:71:in `tap'
from C:/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:71:in `<top (required)>'
from E:/ruby/bin/rails:4:in `require'
from E:/ruby/bin/rails:4:in `<top (required)>'
from -e:1:in `load'
from -e:1:in `<main>'
我通過下載的mysql-控制器-C mysql安裝，但它仍然報道了我的錯誤，並且將libmysql.dll複製到ruby/bin，我也將它複製到system32，並且它仍然存在問題，有人可以給我一個建議來解決它。