使用MySQL启动Rails服务器时出错

Question

I'm running Rails 4.0.3 on Ruby 2.0.0 on Windows 7, and have installed the DevKit (all x64). I've installed the mysql2 gem using subst X: "C:\\Program Files\\MySQL\\MySQL Server 5.6" and then gem install mysql2 --platform=ruby -- --with-mysql-dir=X: , and it installed fine. I then created a new app with rails new mysql_testy which ran fine, but when I run rails server I get the following error:

C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.15/lib/mysql2.rb:8:in 'require': 193: %1 is not a valid Win32 application.   - C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.15/lib/mysql2/mysql2.so (LoadError)
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.15/lib/mysql2.rb:8:in '<top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:76:in 'require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:76:in 'block (2 levels) in require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:72:in 'each'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:72:in 'block in require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:61:in 'each'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:61:in 'require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.5.3/lib/bundler.rb:131:in 'require'
from C:/Users/Liam/Ruby/mysql_testy/config/application.rb:7:in '<top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.3/lib/rails/commands.rb:74:in 'require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.3/lib/rails/commands.rb:74:in 'block in <top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.3/lib/rails/commands.rb:71:in 'tap'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.3/lib/rails/commands.rb:71:in '<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'`

Do you guys have any idea what's happening?

Answer 1

Not sure if you figured it out yet, but I was having the same issue. I installed the 32 bit sql connector, copied the libmysql.dll file from it and pasted it into Ruby/bin folder. Opened a new command prompt and was able to connect to the server.

Before this step though you may have to reinstall a fresh MySQL2 gem pointing to the path of the connector: gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\\mysql-connector\\mysql-connector-c-6.1.5-win32\\lib" --with-mysql-include="C:\\mysql-connector\\mysql-connector-c-6.1.5-win32\\include" --with-mysql-dir="C:\\mysql-connector"'

Hope this helps