barcodescanner_web.rb

require 'rubygems'
require 'sinatra'
require 'barcodescanner'
require 'logger'
log = Logger.new(STDOUT)

get '/' do
  'BARCODE SCANNER WEB!'
end

post '/upload' do
  imgdata = request.body
  File.open('aaa.png', 'wb') {|f|
    f.write imgdata.read
  }
  redirect '/result',  301
end

get '/result' do
  code = BarcodeScanner.process_image_file('aaa.png')
  log.info "BARCODE = #{code}"
end