ruby - ActionController::RoutingError(没有路由匹配 [GET] "/"):

Question

我正在研究一个使用 unicorn 和 rails 的教程。我是 Rails 的新手，出于本教程的目的，我为项目所做的所有工作都是 bundle exec rails new rails-starter，没有进一步的应用程序修改。

当我运行 bundle exec unicorn -c config/unicorn.rb -E production 时，我在浏览器中收到消息:

您要查找的页面不存在。
您可能输入了错误的地址或页面可能已移动。

日志显示:

ActionController::RoutingError (No route matches [GET] "/"):
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/actionpack-4.0.4/lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/actionpack-4.0.4/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/railties-4.0.4/lib/rails/rack/logger.rb:38:in `call_app'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/railties-4.0.4/lib/rails/rack/logger.rb:20:in `block in call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.4/lib/active_support/tagged_logging.rb:68:in `block in tagged'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.4/lib/active_support/tagged_logging.rb:26:in `tagged'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.4/lib/active_support/tagged_logging.rb:68:in `tagged'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/railties-4.0.4/lib/rails/rack/logger.rb:20:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/actionpack-4.0.4/lib/action_dispatch/middleware/request_id.rb:21:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/methodoverride.rb:21:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/runtime.rb:17:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.4/lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/sendfile.rb:112:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/railties-4.0.4/lib/rails/engine.rb:511:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/railties-4.0.4/lib/rails/application.rb:97:in `call'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/unicorn-4.8.2/lib/unicorn/http_server.rb:572:in `process_client'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/unicorn-4.8.2/lib/unicorn/http_server.rb:666:in `worker_loop'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/unicorn-4.8.2/lib/unicorn/http_server.rb:521:in `spawn_missing_workers'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/unicorn-4.8.2/lib/unicorn/http_server.rb:140:in `start'
  /home.rbenv/versions/2.0.0-p0/lib/ruby/gems/2.0.0/gems/unicorn-4.8.2/bin/unicorn:126:in `<top (required)>'
  /home.rbenv/versions/2.0.0-p0/bin/unicorn:23:in `load'
  /home.rbenv/versions/2.0.0-p0/bin/unicorn:23:in `<main>'

但是，如果我只是通过 bundle exec rails server 运行 Rails 应用程序，我可以通过 [IP]:3000 成功访问

我怀疑该错误与 ActionController::RoutingError (No route matches [GET] "/"): 有关，但是我缺乏 Rails 知识来找出修复方法。

Answer 1

您需要在routes.rb 文件中设置根路由。

root :to => 'index#index'

其中第一个索引是 Controller 名称 (IndexController)，第二个索引是 IndexController 中的操作名称。