RubyでYahoo Web API（カテゴリID取得）を試してみた

require 'open-uri'
require 'rexml/document'

uri = "http://shopping.yahooapis.jp/ShoppingWebService/V1/categorySearch?appid=%s&category_id=%s" %
['自分のアプリケーションID',
  1
]
open(uri) do |f|
  REXML::Document.new(f.read).elements.each('ResultSet/Result/Categories/Children/Child') do |item|
    puts item.text('Id')
    puts item.text('Title/Long')
  end
end