Geocoder.rb

# coding: utf-8

require 'json'
require 'open-uri'
require 'cgi'

class Geocoder
  # GOOGLE_KEY = 'your_google_key' # Google Maps Geocoding API
  # GoogleGeocodeUrl = "https://maps.googleapis.com/maps/api/geocode/json?key=#{GOOGLE_KEY}&address="
  GoogleGeocodeUrl = "https://maps.googleapis.com/maps/api/geocode/json?address="

  def self.geo_info(address)
    address = CGI::escape(address).gsub("+", "%20")
    url = "#{GoogleGeocodeUrl}#{address}"

    results = JSON.parse(open(url).read)
    status  = results['status']
    results = results['results'].first
  end
end

geo_info = Geocoder.geo_info("台北101")
p geo_info