Большинство браузеров не позволяют Javascript Ajax обращения к другим доменам, поэтому использование Flickr API с Google App Engine весьма затруднено. Описанный ниже код позволяет организовать простой прокси-сервер:

import cgi
import urllib
from google.appengine.ext import webapp
from google.appengine.api import urlfetch

class FlickrController(webapp.RequestHandler):
	"""Прокси для Ajax запросов к Flickr"""
	def get(self):
		flickrapiendpoint = 'http://api.flickr.com/services/rest/'
		flickrapikey = 'you_flicker_api_key'

		params = self.request.GET
		params.add('api_key', flickrapikey)
		params.add('format', 'json')
		apiquery = urllib.urlencode(params)

		result = urlfetch.fetch(url=flickrapiendpoint + '?' + apiquery, method=urlfetch.GET)
		self.response.out.write(result.content)

def main():
	application = webapp.WSGIApplication(
		[('/flickr/', FlickrController)],
		debug=True)
	wsgiref.handlers.CGIHandler().run(application)

if __name__ == "__main__":
	main()

This entry was posted on Вторник, Август 12th, 2008 at 16:00 and is filed under Google App Engine. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.