Question

我有一些编码,可以打上电子邮件,然后把附件存放在数据库中。 BlabProperties (might change that to Blubstore subsequently). 问题是,当我寄出一个UTF8编码文本时,就会产生错误。

该法典基本上节省了档案,并将钥匙转归母电子邮件实体储存的护卫。由于你可以看到I编码,然后把档案储存起来。我已寄出许多附件,该法典除与统法协会编码的案文外,还涉及所有事项。是否有更好的办法这样做? 我能做些什么来处理统法协会编码案文附件?

code

    my_file = []
    my_list = []
    if hasattr(mail_message,  attachments ):
        file_name = ""
        file_blob = ""
        for filename, filecontents in mail_message.attachments:
            file_name = filename
            file_blob = filecontents.decode()
            my_file.append(file_name)
            my_list.append(str(库存——档案(self, file_name, file_blob)))

库存——档案

def 库存——档案(self, file_name, file_blob):
    new_file = myblob(file_name = file_name, 
                      file_blob = file_blob)
    return new_file.put()

我在上文尝试使用<代码>file_blob = str(file_blob)。这只是打破了该法典,档案从未储存过。

统法协会文本文档中的第1号记录

Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not unicode)
Traceback (most recent call last):
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1530, in __call__
    rv = self.router.dispatch(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/webapp/mail_handlers.py", line 65, in post
    self.receive(mail.InboundEmailMessage(self.request.body))
  File "/base/data/home/apps/s~ae-baseapp/1.359073377819595139/controllers/InboundHandler.py", line 51, in receive
    file_list.append(str(库存——档案(self, file_name, file_blob)))
  File "/base/data/home/apps/s~ae-baseapp/1.359073377819595139/models/MyModel.py", line 63, in 库存——档案
    file_blob = file_blob)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 974, in __init__
    prop.__set__(self, value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 614, in __set__
    value = self.validate(value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 2780, in validate
    (self.name, self.data_type.__name__, err))
BadValueError: Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not unicode)

清除案卷的2号记录。 a. 编码,仅用档案材料替换。

Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not EncodedPayload)
Traceback (most recent call last):
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1530, in __call__
    rv = self.router.dispatch(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/webapp/mail_handlers.py", line 65, in post
    self.receive(mail.InboundEmailMessage(self.request.body))
  File "/base/data/home/apps/s~ae-baseapp/1.359097282640216691/controllers/InboundHandler.py", line 57, in receive
    file_list.append(str(库存——档案(self, file_name, file_blob)))
  File "/base/data/home/apps/s~ae-baseapp/1.359097282640216691/models/MyModel.py", line 64, in 库存——档案
    file_blob = file_blob)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 974, in __init__
    prop.__set__(self, value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 614, in __set__
    value = self.validate(value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 2780, in validate
    (self.name, self.data_type.__name__, err))
BadValueError: Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not EncodedPayload)

Answer 1

沥青有效载荷是。 EncodedPayload 班级。各项附件载有一套编码和一套任择性质。前者是指转让编码,如基64;后者指诸如UTF-8(此处指过时和误导的术语)等编码。 <代码>EncodedPayload.decode() 方法编码既包括转让编码,也包括文本编码编码,如果你只是想让用户了解其电文所附的原件,则这并不十分有益。

各位可以在此采取一些做法,但我建议的是,“EncodedPayload”与脱编码转移编码编码的逻辑相重复,这种逻辑认为:

if filecontents.encoding and filecontents.encoding.lower() !=  7bit :
  try:
    payload = filecontents.payload.decode(filecontents.encoding)
  except LookupError:
    raise UnknownEncodingError( Unknown decoding %s.  % filecontents.encoding)
  except (Exception, Error), e:
    raise PayloadEncodingError( Could not decode payload: %s  % e)
else:
  payload = filecontents.payload

请注意,如果附件was案文,你在储存时需要列入编码,或如果你将其送回用户,则无办法解释,原案文本可以用任何特性编码编码。

Likewise, you should also save the mimetype of the attachment if you can, but this doesn t appear to be exposed anywhere in the API. You might want to consider avoiding using the IncomingMessage class at all, and instead decoding the body of the POST request using Python s mime message module.

Answer 2

如果该守则有助于:

================================================================================================================================================================================================================================================================

   my_file = []
    my_list = []
    if hasattr(mail_message,  attachments ):
        file_name = ""
        for filename, filecontents in mail_message.attachments:
            file_name = filename
            file_blob = filecontents.payload
            file_blob = file_blob.decode(filecontents.encoding)
            my_file.append(file_name)
            my_list.append(str(store_file(self, file_name, file_blob)))

友情链接