如何配置 Ruby 的 Web 服务器

roy0524 — Mon, 16 Oct 2017 21:18:37 +0800

我想用 mac 学习 Ruby+MySQL，做个学校收费系统，网上找了很久都没发现有这个配置，多数是 Ruby on rails 的配置。谁能教教我？

warning: already initialized constant Bootstrap::VERSION

roy0524 — Wed, 06 Sep 2017 21:53:33 +0800

MacdeMacBook-Pro:hello_rails mac
$ bin/rails s
/Users/mac/.rvm/gems/ruby-2.4.1/gems/bootstrap-4.0.0.beta/lib/bootstrap/version.rb:2: warning: already initialized constant Bootstrap::VERSION
/Users/mac/.rvm/gems/ruby-2.4.1/gems/bootstrap-sass-3.3.7/lib/bootstrap-sass/version.rb:2: warning: previous definition of VERSION was here
/Users/mac/.rvm/gems/ruby-2.4.1/gems/bootstrap-4.0.0.beta/lib/bootstrap/version.rb:3: warning: already initialized constant Bootstrap::BOOTSTRAP_SHA
/Users/mac/.rvm/gems/ruby-2.4.1/gems/bootstrap-sass-3.3.7/lib/bootstrap-sass/version.rb:3: warning: previous definition of BOOTSTRAP_SHA was here
=> Booting Puma
=> Rails 5.1.3 application starting in development on http://localhost:3000
=> Run rails server -h for more startup options
Puma starting in single mode...

Version 3.10.0 (ruby 2.4.1-p111), codename: Russell's Teapot
Min threads: 5, max threads: 5
Environment: development
Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop

今天学习时启动服务器出现这个提示，自己查了一下没得到结果，问问大家如何处理？

roy0524 (roy)

如何配置 Ruby 的 Web 服务器

warning: already initialized constant Bootstrap::VERSION