提交multipart/form-data表单时在app引擎中编码问题

Question

我有一个简单的表单,提交图像到blobstore和图像的标题.这适用于我的本地devserver但是当我部署我的代码时,标题中的非ascii字母变成了乱码,带有ascii和hex的某种混合.例如,Ísland成为= CDsland.注意,我<meta http-equiv="Content-Type" content="text/html; charset=utf-8">在标题中使用 第一个值.此外,utf-8适用于我的所有其他形式.只是多部分形式变得乱码.无论如何这是我的形式:

<form action="{{ uploadurl }}" enctype="multipart/form-data" method="post">
  <div><label>Title</label><input type="text" name="title" class="string" /></div>
  <div><label>Picture</label><input type="file" name="img"/></div>
  <div style="margin-top:10px;"><input type="submit" value="Add picture" /></div>
  <input type="hidden" value="{{ album.key }}" name="alid"/>
</form>

这是处理表单的类:

# handler for posting photos
class PostPhoto(blobstore_handlers.BlobstoreUploadHandler):
    def post(self):
        upload_files =  self.get_uploads('img')
        photourl = images.get_serving_url(str(upload_files[0].key()))
        photo = Photo()
        #because of multipart/form-data
        photo.title = self.request.get("title")
        photo.photourl = photourl
        photo.photoalbum = PhotoAlbum.get(self.request.get('alid'))     
        photo.put()

有谁知道如何解决这个问题？我是否必须进行一些服务器端编码/解码？我试过google搜索没有结果(python newb),所以这是我最后的手段,我只是改变我的设计并拆分表格.

Answer 1

这是一个已知的错误.http://code.google.com/p/googleappengine/issues/detail?id=3761

回到原始数据是一个问题:

>>> import quopri
>>> t = unicode(quopri.decodestring('=CD'), 'iso_8859-2')
>>> print t
Í

Answer 2

我正在使用Django nonrel并使用此中间件修复它:

http://code.google.com/p/googleappengine/issues/detail?id=2749#c33

import logging
import quopri
log = logging.getLogger(__name__)

class BlobRedirectFixMiddleware(object):
    def process_request(self, request):
        if request.method == 'POST' and 'HTTP_X_APPENGINE_BLOBUPLOAD' in request.META and request.META['HTTP_X_APPENGINE_BLOBUPLOAD'] == 'true':
            request.POST = request.POST.copy()
            log.info('POST before decoding: %s' % request.POST)
            for key in request.POST:
                if key.startswith('_') or key == u'csrfmiddlewaretoken':
                    continue
                value = request.POST[key]
                if isinstance(value,(str, unicode)):
                    request.POST[key] = unicode(quopri.decodestring(value), 'iso_8859-2')
            log.info('POST after decoding: %s' % request.POST) 
        return None

Answer 3

你试过 photourl = images.get_serving_url(unicode

(upload_files[0].key())) 插入 photourl = images.get_serving_url(str(upload_files[0].key()))