Ruby on rails Rails 3通过*/*

我注意到，在Rails 3.2.2中，所有操作都是以

*/*

格式处理的。所以问题是：什么是

*/*

？为什么默认情况下（每次）调用它

因为一个操作有两个处理：

Started GET "/" for 127.0.0.1 at 2012-07-07 22:50:22 +0200
Processing by MainController#index as HTML

Started GET "/" for 127.0.0.1 at 2012-07-07 22:50:22 +0200
Processing by MainController#index as */*

我已尝试设置：

  respond_to :html

  def index
    @posts = Post.all
    respond_with(@posts)
  end

但同样的问题仍然存在

---

刚刚创建了基于Rails 3.2.6的项目。使用

Thin 1.4.1

和

Webrick

进行测试。同一问题：

=> Booting Thin
=> Rails 3.2.6 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
>> Thin web server (v1.4.1 codename Chromeo)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:3000, CTRL+C to stop

Started GET "/mains" for 127.0.0.1 at 2012-07-09 10:53:55 +0200
Connecting to database specified by database.yml
Processing by MainsController#index as HTML
  Main Load (0.1ms)  SELECT `mains`.* FROM `mains` 
  Rendered mains/index.html.erb within layouts/application (2.7ms)
Completed 200 OK in 97ms (Views: 51.6ms | ActiveRecord: 1.3ms)


Started GET "/mains" for 127.0.0.1 at 2012-07-09 10:53:55 +0200
Processing by MainsController#index as */*
  Main Load (0.1ms)  SELECT `mains`.* FROM `mains` 
  Rendered mains/index.html.erb within layouts/application (0.5ms)
Completed 200 OK in 10ms (Views: 8.6ms | ActiveRecord: 0.1ms)

---

这意味着任何东西，如localhost/users/index、localhost/posts/index等。您可以只设置根路由和控制器路由是的，看起来是这样，但是已经设置了根路径。我只是不明白为什么每次操作都会调用它？我注意到，如果你点击刷新，Internet Explorer喜欢这样做。不幸的是，刷新或简单过程也是如此，这就是Google Chrome。