simple_get.rb(json)

This Ruby code fetches book information from an API using an ISBN and parses the JSON response into a Ruby hash. It starts by importing the net/http and json libraries to handle HTTP requests and JSON parsing. The API URL, which includes the ISBN 9784791765553, is defined as a string. This URL string is then parsed into a URI object. An HTTP GET request is made to this URI, and the response, which is in JSON format, is stored as a string. Finally, the JSON string is parsed into a Ruby hash for easy access and manipulation of the book data.

Execution:

require "net/http"
#=> true
require "json"
#=> true

url = "https://api.openbd.jp/v1/get?isbn=9784791765553"
#=> "https://api.openbd.jp/v1/get?isbn=9784791765553"
uri = URI(url)
#=> #<URI::HTTPS https://api.openbd.jp/v1/get?isbn=9784791765553>
response = Net::HTTP.get(uri)
#=> "[{\"onix\":{\"CollateralDetail\":{},\"RecordReference\":\"9784791765553...
JSON.parse(response)
#=> 
[{"onix" =>
   {"CollateralDetail" => {},
    "RecordReference" => "9784791765553",
    "NotificationType" => "03",
    "ProductIdentifier" =>
     {"ProductIDType" => "15", "IDValue" => "9784791765553"},
    "DescriptiveDetail" =>
     {"TitleDetail" =>
       {"TitleType" => "01",
        "TitleElement" =>
         {"TitleElementLevel" => "01",
          "TitleText" =>
           {"collationkey" => "ネット バカ : インターネット ガ ワタシタチ ノ ノウ ニ シテイル コト",
            "content" => "ネット・バカ : インターネットがわたしたちの脳にしていること"}}},
      "Contributor" =>
       [{"SequenceNumber" => "1",
         "ContributorRole" => [],
         "PersonName" =>
          {"content" => "Carr, Nicholas G, 1959-", "collationkey" => ""}},
        {"SequenceNumber" => "2",
         "ContributorRole" => [],
         "PersonName" =>
          {"content" => "篠儀, 直子", "collationkey" => "シノギ, ナオコ"}}]},
    "PublishingDetail" =>
     {"Imprint" => {"ImprintName" => "青土社"},
      "PublishingDate" => [{"PublishingDateRole" => "11", "Date" => "201007"}]},
    "ProductSupply" =>
     {"SupplyDetail" =>
       {"ProductAvailability" => "99",
        "Price" =>
         [{"PriceType" => "01",
           "CurrencyCode" => "JPY",
           "PriceAmount" => "2200"}]}}},
  "hanmoto" =>
   {"datecreated" => "2015-08-20 03:41:02",
    "reviews" =>
     [{"post_user" => "genkina",
       "reviewer" => "養老孟司（解剖学者）",
       "source_id" => 29,
       "kubun_id" => 1,
       "source" => "毎日新聞",
       "choyukan" => "",
       "han" => "",
       "link" => "",
       "appearance" => "2010-08-22",
       "gou" => ""},
      {"post_user" => "genkina",
       "reviewer" => "森健（ジャーナリスト）",
       "source_id" => 18,
       "kubun_id" => 1,
       "source" => "朝日新聞",
       "choyukan" => "",
       "han" => "",
       "link" => "",
       "appearance" => "2010-09-12",
       "gou" => ""},
      {"post_user" => "genkina",
       "reviewer" => "",
       "source_id" => 23,
       "kubun_id" => 1,
       "source" => "日本経済新聞",
       "choyukan" => "",
       "han" => "",
       "link" => "",
       "appearance" => "2010-09-12",
       "gou" => ""},
      {"post_user" => "genkina",
       "reviewer" => "",
       "source_id" => 19,
       "kubun_id" => 1,
       "source" => "東京新聞／中日新聞",
       "choyukan" => "",
       "han" => "",
       "link" => "",
       "appearance" => "2010-09-12",
       "gou" => ""},
      {"post_user" => "genkina",
       "reviewer" => "鈴木幸一（インターネットイニシアティブ会長）",
       "source_id" => 29,
       "kubun_id" => 1,
       "source" => "毎日新聞",
       "choyukan" => "朝刊",
       "han" => "",
       "link" => "",
       "appearance" => "2020-02-16",
       "gou" => ""}],
    "dateshuppan" => "2010-07",
    "datemodified" => "2015-08-20 03:41:02"},
  "summary" =>
   {"isbn" => "9784791765553",
    "title" => "ネット・バカ : インターネットがわたしたちの脳にしていること",
    "volume" => "",
    "series" => "",
    "publisher" => "青土社",
    "pubdate" => "201007",
    "cover" => "",
    "author" => "Carr,NicholasG,1959- 篠儀,直子"}}]

Executed with Ruby 3.4.2