我正在以字符串格式发送文件和json对象，如下面multipart/form-data中的POST请求中所示。我无法确定我在这里做错了什么。请求，Django视图代码和堆栈跟踪 -
请求：
curl -X POST \
http://127.0.0.1:8000/api/capshots/send-capshot-new-capset/ \
-H 'authorization: Token 534cec0c2d7f81808600fee15751b4de2b7c1bd1' \
-H 'cache-control: no-cache' \
-H 'content-type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW' \
-F media_file=@/Users/ankit/Desktop/logo.png \
-F thumbnail_image=@/Users/ankit/Desktop/logo.png \
-F 'payload='\''{"allow_capset_sharing": true, "description": "Bla blah", "media_type": 1, "content_type_list": ["group", "directmessagegroup", "temporarygroup"], "object_id_list": [3, 2, 4], "userprofiles_pk": [2, 4, 6], "direct": false}'\'''
代码
@api_view(['POST'])
@permission_classes((IsAuthenticated,))
@authentication_classes((TokenAuthentication,))
def send_capshot_new_capset(request):
# content_type could be `group`, `temporarygroup`, `directmessagegroup`
"""
{
"content_type_list" : ['group', 'directmessagegroup', 'temporarygroup'],
"object_id_list" : ['3', '2', '4'],
"userprofiles_pk" : [2, 4, 6],
"direct" : false
}
"""
created_by = request.user.userprofile
payload_json_str = request.data['payload']
print(payload_json_str)
payload_json = json.loads(payload_json_str)
content_type_list = payload_json['content_type_list']
object_id_list = payload_json['object_id_list']
allow_sharing = payload_json['allow_capset_sharing']
description=payload_json['description']
media_type=payload_json['media_type']
# Upload capshot's media file and thumbnail
from boto.s3.connection import S3Connection
from boto.s3.key import Key
media_file = request.FILES['media_file']
thumbnail_image = request.FILES['thumbnail_image']
conn = S3Connection(settings.AWS_ACCESS_KEY, settings.AWS_SECRET_KEY)
bucket = conn.get_bucket('capshot-data')
k = Key(bucket)
k.key = "capshots/media/" + datetime.datetime.now().strftime("%d-%m-%y-%H-%M-%S.%f")
k.set_contents_from_file(media_file)
media_url = "https://some-url/" + k.key
k.key = "capshots/thumbnail/" + datetime.datetime.now().strftime("%d-%m-%y-%H-%M-%S.%f")
k.set_contents_from_file(thumbnail_image)
thumbnail_image_url = "https://some-url/" + k.key
# Create Capsets for existing conversations
for content_type, object_id in zip(content_type_list, object_id_list):
content_type = ContentType.objects.get(app_label='groups', model=content_type)
object_id = object_id
capset = Capset.objects.create(created_by=created_by,
allow_sharing=allow_sharing,
content_type=content_type,
object_id=object_id)
capshot = Capshot.objects.create(created_by=created_by,
capset=capset,
order=1,
description=description,
media_type=media_type,
media_url=media_url,
thumbnail_image_url=thumbnail_image_url
)
# Create CapsetReadActivity
CapsetReadActivity.objects.create(userprofile=request.user.userprofile, capset=capset)
try:
userprofiles_pk = payload_json["userprofiles_pk"]
if len(userprofiles_pk) > 0:
# DirectMessageGroup
if payload_json["direct"] is True:
for userprofile_pk in userprofiles_pk:
sender_directmessagegroups_pk = set(UserProfileDirectMessageGroupMembership.objects.filter(userprofile=created_by).values_list('directmessagegroup', flat=True))
receiver_directmessagegroups_pk = set(UserProfileDirectMessageGroupMembership.objects.filter(userprofile__pk=userprofile_pk).values_list('directmessagegroup', flat=True))
common_directmessagegroup_pk_list = list(sender_directmessagegroups_pk & receiver_directmessagegroups_pk)
# if direct message group exists:
if len(common_directmessagegroup_pk_list) == 1:
# get dmg
directmessagegroup = DirectMessageGroup.objects.get(pk=common_directmessagegroup_pk_list[0])
else:
# create dmg
directmessagegroup = DirectMessageGroup.objects.create(created_by=created_by)
UserProfileDirectMessageGroupMembership.objects.create(userprofile=created_by, directmessagegroup=directmessagegroup)
UserProfileDirectMessageGroupMembership.objects.create(userprofile=UserProfile.objects.get(pk=userprofile_pk), directmessagegroup=directmessagegroup)
# create capset, capshot
content_type = ContentType.objects.get(app_label='groups', model='directmessagegroup')
object_id = directmessagegroup.pk
capset = Capset.objects.create(created_by=created_by,
allow_sharing=allow_sharing,
content_type=content_type,
object_id=object_id)
capshot = Capshot.objects.create(created_by=created_by,
capset=capset,
order=1,
description=description,
media_type=media_type,
media_url=media_url,
thumbnail_image_url=thumbnail_image_url
)
# Create CapsetReadActivity
CapsetReadActivity.objects.create(userprofile=created_by, capset=capset)
# TemporaryGroup
else:
common_temporarygroup_pk_list = None
for userprofile_pk in userprofiles_pk:
if common_temporarygroup_pk_list is None:
common_temporarygroup_pk_list = set(UserProfileTemporaryGroupMembership.objects.filter(userprofile__pk=userprofile_pk).values_list('temporarygroup', flat=True))
else:
common_temporarygroup_pk_list = common_temporarygroup_pk_list & set(UserProfileTemporaryGroupMembership.objects.filter(userprofile__pk=userprofile_pk).values_list('temporarygroup', flat=True))
common_temporarygroup_pk_list = list(common_temporarygroup_pk_list)
# if common TG exists
if len(common_temporarygroup_pk_list) == 1:
# get TG
temporarygroup = TemporaryGroup.objects.get(pk=common_temporarygroup_pk_list[0])
else:
temporarygroup = TemporaryGroup.objects.create(created_by=created_by)
UserProfileTemporaryGroupMembership.objects.create(userprofile=created_by, temporarygroup=temporarygroup)
for userprofile_pk in userprofiles_pk:
UserProfileTemporaryGroupMembership.objects.create(userprofile=UserProfile.objects.get(pk=userprofile_pk), temporarygroup=temporarygroup)
# create capset, capshot
content_type = ContentType.objects.get(app_label='groups', model='temporarygroup')
object_id = temporarygroup.pk
capset = Capset.objects.create(created_by=created_by,
allow_sharing=allow_sharing,
content_type=content_type,
object_id=object_id)
capshot = Capshot.objects.create(created_by=created_by,
capset=capset,
order=1,
description=description,
media_type=media_type,
media_url=media_url,
thumbnail_image_url=thumbnail_image_url
)
# Create CapsetReadActivity
CapsetReadActivity.objects.create(userprofile=created_by, capset=capset)
except: # key userprofiles_pk does not exist
pass
return Response({}, status=status.HTTP_201_CREATED)
Stacktrace ：
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
'{"allow_capset_sharing": true, "description": "Bla blah", "media_type": 1, "content_type_list": ["group", "directmessagegroup", "temporarygroup"], "object_id_list": [3, 2, 4], "userprofiles_pk": [2, 4, 6], "direct": false}'
Internal Server Error: /api/capshots/send-capshot-new-capset/
Traceback (most recent call last):
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
response = get_response(request)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/rest_framework/views.py", line 483, in dispatch
response = self.handle_exception(exc)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/rest_framework/views.py", line 443, in handle_exception
self.raise_uncaught_exception(exc)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/rest_framework/views.py", line 480, in dispatch
response = handler(request, *args, **kwargs)
File "/Users/ankit/projects/indiez/capshot/capshot-be/venv/lib/python3.6/site-packages/rest_framework/decorators.py", line 52, in handler
return func(*args, **kwargs)
File "/Users/ankit/projects/indiez/capshot/capshot-be/capshotbackend/capshots/views.py", line 46, in send_capshot_new_capset
payload_json = json.loads(payload_json_str)
File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/__init__.py", line 354, in loads
return _default_decoder.decode(s)
File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)