DBI :: InterfaceError：无法加载驱动程序（未初始化的常量MysqlError）
我收录了gem，
dbd-mysql (0.4.4) dbi (0.4.5) mysql (2.8.1) 在我运行以下代码时在rails控制台上，
require 'rubygems' require "dbi" require 'dbd-mysql' dbh = DBI.connect("DBI:Mysql:TestDB:localhost","username", "pwd") 1.9.2-p180 :001 > require 'rubygems' => false 1.9.2-p180 :002 > require "dbi" => false 1.9.2p180 :003 > require 'dbd-mysql' LoadError: no such file to load -- dbd-mysql from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:318:in `rescue in load_driver' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:242:in `load_driver' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:160:in `_get_full_driver' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:145:in `connect' from (irb):3 from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/railties-3.1.1/lib/rails/commands/console.rb:45:in `start' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/railties-3.1.1/lib/rails/commands/console.rb:8:in `start' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/railties-3.1.1/lib/rails/commands.rb:40:in `' from script/rails:6:in `require' from script/rails:6:in `' 1.9.2-p180 :004 > dbh = DBI.connect("DBI:Mysql:TestDB:localhost","username", "pwd") DBI::InterfaceError: Could not load driver (uninitialized constant MysqlError) from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:318:in `rescue in load_driver' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:242:in `load_driver' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:160:in `_get_full_driver' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/dbi-0.4.5/lib/dbi.rb:145:in `connect' from (irb):3 from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/railties-3.1.1/lib/rails/commands/console.rb:45:in `start' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/railties-3.1.1/lib/rails/commands/console.rb:8:in `start' from /.rvm/gems/ruby-1.9.2-p180@rails3/gems/railties-3.1.1/lib/rails/commands.rb:40:in `' from script/rails:6:in `require' from script/rails:6:in `' 1.9.2-p180 :004 >
我收到了这个错误
LoadError: no such file to load -- dbd-mysql DBI::InterfaceError: Could not load driver (uninitialized constant MysqlError)
是我的dbd-mysql gem未正确安装？ 请有人建议我如何解决这个问题？
如果我是你，我会创建一个全新的应用程序
rails new ProjectName -d mysql
然后我将在Config / Database.yml中指定DB Name