如何使用 zipfile 和 urllib2 导出多个图像 - django [英] how can I export multiple images using zipfile and urllib2 - django

问题描述

我正在尝试将多个图像文件添加到我的 zip 文件中.我四处搜索，知道如何添加一个.我尝试遍历多个图像然后写入其中，但没有成功.

I am trying to add multiple image files into my zip. I have searched around and knows how to add a single one. I tried to loop through multiple images then write into it but it didn't work.

我对 txt 格式做了同样的事情，它的工作原理是我可以将一些文件压缩到 zip 中，但在使用图像时却不能.

I kind of did the same thing with txt format and it works that I can compress a few files into the zip but somehow not when with image.

有人可以帮我一把吗?提前致谢.

Can someone please give me a hand? Thanks in advance.

# get all photos in db which will be a queryset as result
photos = Photo.objects.all()

# loop through the queryset
for photo in photos:
    # open the image url
    url = urllib2.urlopen(photo.image.url)
    # get the image filename including extension
    filename = str(photo.image).split('/')[-1]
    f = StringIO()
    zip = ZipFile(f, 'w')
    zip.write(filename, url.read())
zip.close()
response = HttpResponse(f.getvalue(), content_type="application/zip")
response['Content-Disposition'] = 'attachment; filename=image-test.zip'
return response

这会给我最后一张图片，我可以理解为什么.

This would give me the last image which in a way I can see why.

推荐答案

不要在每次迭代中都创建一个新的 zip 文件.相反，将所有文件写入同一个存档(您在循环之前实例化):

Don't create a new zip file in every iteration. Instead, write all the files to the same archive (which you instantiate before the loop):

f = StringIO()
zip = ZipFile(f, 'w')

for photo in photos:
    url = urllib2.urlopen(photo.image.url)
    filename = str(photo.image).split('/')[-1]
    zip.write(filename, url.read())
zip.close()

这篇关于如何使用 zipfile 和 urllib2 导出多个图像 - django的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！