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https://gitee.com/coder-xiaomo/flashsale
synced 2025-09-13 23:41:39 +08:00
添加Metronic(作为LFS)
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# -*- coding: utf-8 -*-
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#
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# jQuery File Upload Plugin GAE Python Example 2.1.1
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# https://github.com/blueimp/jQuery-File-Upload
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#
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# Copyright 2011, Sebastian Tschan
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# https://blueimp.net
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#
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# Licensed under the MIT license:
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# http://www.opensource.org/licenses/MIT
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#
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from __future__ import with_statement
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from google.appengine.api import files, images
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from google.appengine.ext import blobstore, deferred
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from google.appengine.ext.webapp import blobstore_handlers
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import json
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import re
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import urllib
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import webapp2
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WEBSITE = 'http://blueimp.github.io/jQuery-File-Upload/'
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MIN_FILE_SIZE = 1 # bytes
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MAX_FILE_SIZE = 5000000 # bytes
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IMAGE_TYPES = re.compile('image/(gif|p?jpeg|(x-)?png)')
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ACCEPT_FILE_TYPES = IMAGE_TYPES
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THUMBNAIL_MODIFICATOR = '=s80' # max width / height
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EXPIRATION_TIME = 300 # seconds
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def cleanup(blob_keys):
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blobstore.delete(blob_keys)
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class UploadHandler(webapp2.RequestHandler):
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def initialize(self, request, response):
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super(UploadHandler, self).initialize(request, response)
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self.response.headers['Access-Control-Allow-Origin'] = '*'
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self.response.headers[
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'Access-Control-Allow-Methods'
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] = 'OPTIONS, HEAD, GET, POST, PUT, DELETE'
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self.response.headers[
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'Access-Control-Allow-Headers'
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] = 'Content-Type, Content-Range, Content-Disposition'
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def validate(self, file):
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if file['size'] < MIN_FILE_SIZE:
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file['error'] = 'File is too small'
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elif file['size'] > MAX_FILE_SIZE:
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file['error'] = 'File is too big'
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elif not ACCEPT_FILE_TYPES.match(file['type']):
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file['error'] = 'Filetype not allowed'
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else:
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return True
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return False
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def get_file_size(self, file):
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file.seek(0, 2) # Seek to the end of the file
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size = file.tell() # Get the position of EOF
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file.seek(0) # Reset the file position to the beginning
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return size
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def write_blob(self, data, info):
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blob = files.blobstore.create(
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mime_type=info['type'],
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_blobinfo_uploaded_filename=info['name']
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)
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with files.open(blob, 'a') as f:
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f.write(data)
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files.finalize(blob)
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return files.blobstore.get_blob_key(blob)
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def handle_upload(self):
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results = []
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blob_keys = []
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for name, fieldStorage in self.request.POST.items():
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if type(fieldStorage) is unicode:
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continue
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result = {}
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result['name'] = re.sub(
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r'^.*\\',
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'',
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fieldStorage.filename
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)
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result['type'] = fieldStorage.type
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result['size'] = self.get_file_size(fieldStorage.file)
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if self.validate(result):
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blob_key = str(
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self.write_blob(fieldStorage.value, result)
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)
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blob_keys.append(blob_key)
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result['deleteType'] = 'DELETE'
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result['deleteUrl'] = self.request.host_url +\
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'/?key=' + urllib.quote(blob_key, '')
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if (IMAGE_TYPES.match(result['type'])):
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try:
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result['url'] = images.get_serving_url(
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blob_key,
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secure_url=self.request.host_url.startswith(
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'https'
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)
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)
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result['thumbnailUrl'] = result['url'] +\
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THUMBNAIL_MODIFICATOR
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except: # Could not get an image serving url
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pass
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if not 'url' in result:
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result['url'] = self.request.host_url +\
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'/' + blob_key + '/' + urllib.quote(
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result['name'].encode('utf-8'), '')
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results.append(result)
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deferred.defer(
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cleanup,
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blob_keys,
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_countdown=EXPIRATION_TIME
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)
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return results
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def options(self):
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pass
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def head(self):
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pass
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def get(self):
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self.redirect(WEBSITE)
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def post(self):
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if (self.request.get('_method') == 'DELETE'):
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return self.delete()
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result = {'files': self.handle_upload()}
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s = json.dumps(result, separators=(',', ':'))
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redirect = self.request.get('redirect')
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if redirect:
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return self.redirect(str(
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redirect.replace('%s', urllib.quote(s, ''), 1)
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))
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if 'application/json' in self.request.headers.get('Accept'):
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self.response.headers['Content-Type'] = 'application/json'
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self.response.write(s)
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def delete(self):
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key = self.request.get('key') or ''
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blobstore.delete(key)
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s = json.dumps({key: True}, separators=(',', ':'))
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if 'application/json' in self.request.headers.get('Accept'):
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self.response.headers['Content-Type'] = 'application/json'
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self.response.write(s)
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class DownloadHandler(blobstore_handlers.BlobstoreDownloadHandler):
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def get(self, key, filename):
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if not blobstore.get(key):
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self.error(404)
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else:
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# Prevent browsers from MIME-sniffing the content-type:
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self.response.headers['X-Content-Type-Options'] = 'nosniff'
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# Cache for the expiration time:
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self.response.headers['Cache-Control'] = 'public,max-age=%d' % EXPIRATION_TIME
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# Send the file forcing a download dialog:
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self.send_blob(key, save_as=filename, content_type='application/octet-stream')
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app = webapp2.WSGIApplication(
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[
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('/', UploadHandler),
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('/([^/]+)/([^/]+)', DownloadHandler)
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],
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debug=True
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)
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