RubyでGETに対しJSON返すだけのサンプル

json_server_test.rb

require "json"

hoge = {
	"hoge" => "fuga"
}.to_json

require 'webrick'
srv = WEBrick::HTTPServer.new({:BindAddress => '127.0.0.1',
                               :Port => 10080})
srv.mount_proc("/") { |req, res|
	res.body = hoge
	res["Content-Type"] = "application/json"
}
Signal.trap(:INT){ srv.shutdown }
srv.start