的Ruby/Rails - 解析JSON和拆分对象转换为datetime

我有以下代码：的Ruby/Rails - 解析JSON和拆分对象转换为datetime

page = Net::HTTP.get_response(URI.parse('http://www.enhancetv.com.au/tvguide/rss/melbournerss.php')).body rescue nil 
show_info = Hash.from_xml(page).to_json 
puts show_info

，它输出以下JSON：我想

{"rss":{"version":"2.0","channel":{"title":"EnhanceTV Melbourne TV Guide ","description":null,"link":"http://www.enhancetv.com.au","lastBuildDate":"Wed, 21 Dec 
2011 10:25:55 1000","generator":"FeedCreator 1.7.2","item":[{"title":"Toasted TV - TEN - 07:00:00 - 21/12/2011","link":"http://www.enhancetv.com.au/tvguide/","d 
escription":"Join the team for the latest in gaming, sport, gadgets, pop culture, movies, music and other seriously fun stuff! Featuring a variety of your favou 
rite cartoons."},{"title":"Totally Wild - TEN - 08:00:00 - 21/12/2011","link":"http://www.enhancetv.com.au/tvguide/","description":"The Totally Wild team brings 
you the latest in action, adventure and wildlife from Australia and around theglobe."},{"title":"Explore: Africa&apos;s Rift Valley - SBS ONE - 19:30:00 - 21/ 
12/2011","link":"http://www.enhancetv.com.au/tvguide/","description":"Simon Reeve leads a team of journalists on a spectacular journey down East Africa&apos;s R 
ift Valley. From the tiny country of Djibouti, which is the centre of America&apos;s military presence in Africa, to the wide open plains of Kenya, the team enc 
ounter awe-inspiring landscapes, rich culture and amazing wildlife."}]}}}

首先，实际上能够遍历每个项目。

这是我到目前为止，但它是抛出一个错误。我不完全知道如何甚至通过解析JSON循环正常：

result = JSON.parse(show_info) # convert JSON data to native ruby 

result["channel"].each do |a| 
    puts a['title'] 
    puts a['description'] 
    puts a['link'] 
end

这提供了以下错误：

scraper.rb:118:in `<main>': undefined method `each' for "rss":String (NoMethodEr 
ror)

那么我希望能够做到在一个split"title"，因此我可以将时间和日期转换为稍后使用的DateTime对象。

在此先感谢。

来源

2011-12-20 fuzz

对于那个JSON，'NoMethodError：未定义的方法'each'for nil：NilClass'对我来说更有意义。你确定那个错误信息来自代码和那个JSON吗？ – 2011-12-21 00:07:29

由于原始来源是在xml中使用Nokogiri做解析和其他任何其他内容，而不是转换内容的时间和时间。 – 2011-12-21 00:07:38

@ muistooshort对，它绝对来自特定的代码行和JSON。 – fuzz 2011-12-21 00:09:33

我决定使用Nokogiri来解析XML而不是将XML转换为JSON。

感谢您的帮助。

来源

2011-12-21 00:31:41 fuzz

的Ruby/Rails - 解析JSON和拆分对象转换为datetime

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