隨着Nokogiri我得到錯誤“初始化”：getaddrinfo：沒有這樣的主機是已知的。 （SocketError）”

Question

我打算下面的代碼，只是為了啟動Nokogiri來滿足要求，當我運行它進行測試時得到了錯誤：

D:\WIPData\Ruby\Scripts>Nokogiri.rb
C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `initialize': getaddrinfo: No such
host is known.  (SocketError)
        from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `open'
        from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `block in connect'
        from C:/Ruby193/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
        from C:/Ruby193/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
        from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `connect'
        from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
        from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:744:in `start'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:306:in `open_http'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:775:in `buffer_open'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:203:in `block in open_loop'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:201:in `catch'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:201:in `open_loop'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:146:in `open_uri'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:677:in `open'
        from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:33:in `open'
        from D:/WIPData/Ruby/Scripts/Nokogiri.rb:6:in `<main>'

D:\WIPData\Ruby\Scripts>

碼

require 'nokogiri'
require 'open-uri'

# Get a Nokogiri::HTML::Document for the page we’re interested in...

doc = Nokogiri::HTML(open('http://www.google.co.in'))

為什么這樣以及如何修復它，請指教我。

Answer 1

您似乎需要配置代理。 找出您的組織的代理URL /端口（以及是否需要身份驗證）。 您可以從瀏覽器配置中查看此信息。 要將它與Ruby代碼一起使用，您需要設置HTTP_PROXY環境變量。

您可以在Ruby代碼中設置它：

ENV['HTTP_PROXY'] = 'http://hostname:port'

或者如果您需要身份驗證：

ENV['HTTP_PROXY'] = 'http://username:password@hostname:port'

更永久的解決方案是在系統環境變量中設置HTTP_PROXY 。