post.rb

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

# http://checkcosmetic.net
# uri = URI.parse("http://checkcosmetic.net/wp-admin/admin-ajax.php")

# http://cosmetic.momoko.hk
uri = URI.parse("http://cosmetic.momoko.hk/calculate.php")

request = Net::HTTP::Post.new(uri.path)

# http://checkcosmetic.net
# request.set_form_data({
#   'action' => 'dc_checkAJAX', 
# 	'code' => 0303, 
# 	'brand'=>'12839',
# 	'brandid' => 'c4fb753df6b386d98ead81f30a0bbed0'})

# http://cosmetic.momoko.hk
request.set_form_data({
	'brand' => 'C6', 
	'code' => 6403})

request["User-Agent"] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.71 Safari/537.36"
request["Accept"] = "*/*"
request["Content-type"] = "application/x-www-form-urlencoded"
request["Referer"] = "http://cosmetic.momoko.hk/"
request["Connection"] = "keep-alive"
request["X-Requested-With"] = "XMLHttpRequest"
request["Host"] = "cosmetic.momoko.hk"
request["Origin"] = "http://cosmetic.momoko.hk"
request["Accept-Language"] = "zh-CN,zh;q=0.8"

response = Net::HTTP.start(uri.hostname, uri.port) do |http|
	http.request(request)
end

case response
when Net::HTTPSuccess
	p 'hello'
	# response["content-type"]	
	# response.each_header do |key, value|
 #  		p "#{key} => #{value}"
 #  	end
  	result = JSON.parse(response.body)
  	p result['title']
  	p result['date']
else
	p response.value
end