C:\Sites\work\demo>rails server
D:/Program Files/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/app_loader.rb:40:in `exec':
No such file or directory - "D:/Program Files/RailsInstaller/Ruby2.3.0/bin/ruby.exe" (Errno::ENOENT)

ｒｕｂｙ设置环境变量