#2 楼 @jxs471494539 已经解决，thanks!

#1 楼 @pynix 已经解决了，谢谢

#2 楼 @jxs471494539

Blogdemo::Application.routes.draw do

  get "index_page/home"
  # The priority is based upon order of creation: first created -> highest priority.
  # See how all your routes lay out with "rake routes".

  # You can have the root of your site routed with "root"
   root 'index_page#home'
end

#1 楼 @pynix 我知道，是我自己的一个 welcome 页面

#1 楼 @luikore ok, 非常感谢