4 
require 'sinatra'
require 'rubygems'

class TestServer < Sinatra::Application
set :port, 22340
    get '/' do
        "Hello World"
    end
    run! if app_file == $0
end

使用 Ruby 2.0.0-p0 和 Sinatra 1.4.2 的非常简单的应用程序

当我按 ctrl-c 时 webrick 服务器在默认端口上重新启动...请参阅下面的输出

LM-BOS-00715009:server joshughes$ ruby test.rb 
[2013-04-19 16:07:48] INFO  WEBrick 1.3.1
[2013-04-19 16:07:48] INFO  ruby 2.0.0 (2013-02-24) [x86_64-darwin11.4.2]
== Sinatra/1.4.2 has taken the stage on 22340 for development with backup from WEBrick
[2013-04-19 16:07:48] INFO  WEBrick::HTTPServer#start: pid=63798 port=22340
^C
== Sinatra has ended his set (crowd applauds)
[2013-04-19 16:07:56] INFO  going to shutdown ...
[2013-04-19 16:07:56] INFO  WEBrick::HTTPServer#start done.
[2013-04-19 16:07:56] INFO  WEBrick 1.3.1
[2013-04-19 16:07:56] INFO  ruby 2.0.0 (2013-02-24) [x86_64-darwin11.4.2]
== Sinatra/1.4.2 has taken the stage on 4567 for development with backup from WEBrick
[2013-04-19 16:07:56] INFO  WEBrick::HTTPServer#start: pid=63798 port=4567
^C

谁能帮我解决这里可能出了什么问题？

4

1 回答 1

6

问题是您没有正确使用Sinatra 模块化风格。而不是要求sinatra和继承Sinatra::Application你应该要求sinatra/base和继承自Sinatra::Base.

正在发生的事情是这样的。您需要 plain sinatra，而后者又需要sinatra/main. 该文件添加了一个at_exit运行内置服务器的处理程序（除非您禁用它）。但是，您还显式调用run!了自己的代码，因此服务器由于您的调用而启动，然后当您退出时，at_exit处理程序再次启动服务器。要求sinatra/base不会在退出时启动内置服务器，因此您只有自己的显式调用run!.

require 'sinatra/base' # change here
require 'rubygems'

class TestServer < Sinatra::Base # and here
  set :port, 22340
  get '/' do
    "Hello World"
  end
  run! if app_file == $0
end
于 2013-04-19T21:07:37.433 回答