Service Computing Assignment 4 - Practice of Information Systems

zipcode_to_geocode.rb

require 'net/http'
require 'uri'
require 'json'

raise ArgumentError, "required argument 'zipcode' not found" if ARGV.empty?

ZIPCODE = ARGV[0]
API_KEY = ''.freeze # TODO: fill in your Google Maps Geocoding API key

def get_hash_from_json_web_api(uri, **params)
  uri.query = URI.encode_www_form(params)
  # puts uri
  res = Net::HTTP.get_response(uri)
  # puts res.body
  JSON.parse(res.body)
end

uri1  = URI('http://zipcloud.ibsnet.co.jp/api/search')
hash1 = get_hash_from_json_web_api(uri1, zipcode: ZIPCODE)

result  = hash1['results'][0]
address = result['address1'] + result['address2'] + result['address3']

puts "address: #{address}"

uri2  = URI('https://maps.googleapis.com/maps/api/geocode/json')
hash2 = get_hash_from_json_web_api(uri2, address: address, key: API_KEY)

location = hash2['results'][0]['geometry']['location']

puts "latitude: #{location['lat']}"
puts "longitude: #{location['lng']}"

Usage

Give a zipcode as an argument.

$ ruby zipcode_to_geocode.rb 6068246

Then you can get following results.

address: 京都府京都市左京区北白川西平井町
latitude: 35.0352314
longitude: 135.7860501