Question

我正在尝试阅读Stanford ecorner XML：

open("http://ecorner.stanford.edu/RecentlyAdded.xml")

但遇到以下错误消息：

OpenURI::HTTPError: 500 Internal Server Error
    from /usr/local/lib/ruby/1.8/open-uri.rb:277:in `open_http'
    from /usr/local/lib/ruby/1.8/open-uri.rb:616:in `buffer_open'
    from /usr/local/lib/ruby/1.8/open-uri.rb:164:in `open_loop'
    from /usr/local/lib/ruby/1.8/open-uri.rb:162:in `catch'
    from /usr/local/lib/ruby/1.8/open-uri.rb:162:in `open_loop'
    from /usr/local/lib/ruby/1.8/open-uri.rb:132:in `open_uri'
    from /usr/local/lib/ruby/1.8/open-uri.rb:518:in `open'
    from /usr/local/lib/ruby/1.8/open-uri.rb:30:in `open'
    from (irb):65
    from :0

我相信，但我错了，这是因为我需要登录才能使用Feed。

我可以使用的任何解决方法吗？

Answer 1

如果没有登录，您应该获得401 Unauthorized而不是500的HTTP响应代码。我试图在浏览器中打开网站，这有效。结果他们的网络服务器不喜欢缺少用户代理，所以如果你添加open-uri工作：

>> require 'open-uri' 
#=> true
>> open("http://ecorner.stanford.edu/RecentlyAdded.xml", 'User-Agent' => 'ruby') 
#=> #<File:/var/folders/H9/H9qnar1yGZqBrWFGuTE0RU+++TI/-Tmp-/open-uri20110505-25566-zsc3pd-0>

Answer 2

这对我有用：

require 'open-uri'
require 'nokogiri'

doc = Nokogiri::XML(open('http://ecorner.stanford.edu/RecentlyAdded.xml'))
puts doc.search('title').map{ |n| n.text }

>> Recently Added STVP Entrepreneurship Corner Materials
>> STVP Entrepreneurship Corner
>> Podcast: Developing Products that Save Lives - Richard Scheller (Genentech)
>> Podcast: How to Build Instant Connections - Ori Brafman (Author)
>> Podcast: A New Vision for Capital Markets - Barry Silbert (SecondMarket)
>> Podcast: Effective Models for Sustainable Growth - Jennifer Morris (Conservation International)

请注意，您有500个范围的错误。这意味着他们的服务器正在运行，但功能足以承认问题。如果你有一个400范围的错误，他们会因某些原因拒绝你访问这些内容，所以我怀疑问题是身份验证还是你身边的任何事情。

OpenURI - XML Feed上的500内部服务器错误

2 个答案: