在rake任務中打開uri的404錯誤...是什麼原因造成的？

我有一個從API獲取JSON數據的耙子任務，分析它，並將其保存到數據庫：在rake任務中打開uri的404錯誤...是什麼原因造成的？

task :embedly => :environment do 
    require 'json' 
    require 'uri' 
    require 'open-uri' 

    Video.all.each do |video| 
    json_stream = open("http://api.embed.ly/1/oembed?key=08b652e6b3ea11e0ae3f4040d3dc5c07&url=#{video.video_url}&maxwidth=525") 
    ruby_hash = JSON.parse(json_stream.read) 
    thumbnail_url = ruby_hash['thumbnail_url'] 
    embed_code = ruby_hash['html'] 
    video.update_attributes(:thumbnail_url => thumbnail_url, :embed_code => embed_code) 
    end 
end

當我運行rake任務，我得到的堆棧跟蹤這個錯誤，我沒有想法是什麼導致它：

rake aborted! 
404 Not Found 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:277:in `open_http' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:616:in `buffer_open' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:164:in `open_loop' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:162:in `catch' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:162:in `open_loop' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:132:in `open_uri' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:518:in `open' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:30:in `open' 
/rubyprograms/dreamstill/lib/tasks/tasks.rake:16 
/rubyprograms/dreamstill/lib/tasks/tasks.rake:15:in `each' 
/rubyprograms/dreamstill/lib/tasks/tasks.rake:15 
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call' 
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute' 
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each' 
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute' 
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain' 
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'

任何想法的問題，以及如何解決它？

來源

2011-09-21 Justin Meltzer

如果指定資源（視頻/圖片）不存在，embed.ly api將返回404。 OpenURI將其作爲例外處理。要發現錯誤，您可以這樣做：

task :embedly => :environment do 
    require 'json' 
    require 'uri' 
    require 'open-uri' 

    Video.all.each do |video| 
    begin 
     json_stream = open("http://api.embed.ly/1/oembed?key=08b652e6b3ea11e0ae3f4040d3dc5c07&url=#{video.video_url}&maxwidth=525") 
     ruby_hash = JSON.parse(json_stream.read) 
     thumbnail_url = ruby_hash['thumbnail_url'] 
     embed_code = ruby_hash['html'] 
     video.update_attributes(:thumbnail_url => thumbnail_url, :embed_code => embed_code) 
    rescue OpenURI::HTTPError => ex 
     puts "Handle missing video here" 
    end 
    end 
end

您還可以在運行任務之前檢查視頻/ url是否有效。

來源

2011-09-21 06:24:09

我如何能打印出是404的URL任何想法？ – lulalala

你不是URL編碼您video.url：

json_stream = open("...url=#{video.video_url}...")

所以你可能會產生錯位的URL和api.embed.ly告訴你，它不能找到它。例如，如果video.video_url是http://a.b?c=d&e=f，那麼e=f將被視爲http://api.embed.ly/1/oembed的參數，而不是傳遞給http://a.b。

你可能想這樣做，而不是：

require 'cgi' 
#... 
json_stream = open("...url=#{CGI.escape(video.video_url)}...")

來源

2011-09-21 06:27:47

在rake任務中打開uri的404錯誤...是什麼原因造成的？

回答

相關問題