如何在GAE 上动态生成zip 文件

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9	zipfile is available at GAE and example of its use exactly like yours was copied here from http://www.tareandshare.com/2008/09/28/Zip-Google-App-Engine-GAE/

 

 

from google.appengine.ext import webapp
from google.appengine.api import urlfetch
import zipfile
from cStringIO import StringIO
def addFile(self,zipstream,url,fname):
    # get the contents          
    result = urlfetch.fetch(url)

    # store the contents in a stream
    f=StringIO(result.content)
    length = result.headers['Content-Length']
    f.seek(0)

    # write the contents to the zip file
    while True:
    buff = f.read(int(length))
    if buff=="":break
    zipstream.writestr(fname,buff)
    return zipstream

def ZipFiles(self):
    # create the zip stream
    zipstream=StringIO()
    file = zipfile.ZipFile(zipstream,"w")

    url = 'http://someplace.tld/outimage.jpg'

    # repeat this for every URL that should be added to the zipfile
    file =self.addFile(file,url,"ourimage.jpg")

    # we have finished with the zip so package it up and write the directory
    file.close()
    zipstream.seek(0)

    # create and return the output stream
    self.response.headers['Content-Type'] ='application/zip'
    self.response.headers['Content-Disposition'] = 'attachment; filename="outfile.zip"' 
    while True:
    buf=zipf.read(2048)
    if buf=="": break
    self.response.out.write(buf)