我遵循以下指南（https://abhaykashyap.com/blog/post/tutorial-how-build-facebook-messenger-bot-using-django-ngrok），了解如何创建聊天机器人，直到我更新的部分意见.py。方法声明似乎有一些问题，我不知道出了什么问题。除此之外，代码几乎与指南完全相同（指南创建者忘记添加一些导入）。这是我尝试在虚拟环境中运行服务器时遇到的错误：
(ivanteongbot) Ivans-MacBook-Pro:ivanteongbot ivanteong$ python manage.py runserver
Performing system checks...
Unhandled exception in thread started by <function wrapper at 0x1097a2050>
Traceback (most recent call last):
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 121, in inner_run
self.check(display_num_errors=True)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/core/management/base.py", line 385, in check
include_deployment_checks=include_deployment_checks,
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/core/management/base.py", line 372, in _run_checks
return checks.run_checks(**kwargs)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/core/checks/urls.py", line 14, in check_url_config
return check_resolver(resolver)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/core/checks/urls.py", line 24, in check_resolver
for pattern in resolver.url_patterns:
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/urls/resolvers.py", line 310, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/urls/resolvers.py", line 303, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/ivanteong/Desktop/comp9323/ivanteongbot/ivanteongbot/urls.py", line 24, in <module>
url(r'^fb_ivanteongbot/', include('fb_ivanteongbot.urls')),
File "/Users/ivanteong/Envs/ivanteongbot/lib/python2.7/site-packages/django/conf/urls/__init__.py", line 50, in include
urlconf_module = import_module(urlconf_module)
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/ivanteong/Desktop/comp9323/ivanteongbot/fb_ivanteongbot/urls.py", line 3, in <module>
from .views import IvanTeongBotView
File "/Users/ivanteong/Desktop/comp9323/ivanteongbot/fb_ivanteongbot/views.py", line 8, in <module>
class IvanTeongBotView(generic.View):
File "/Users/ivanteong/Desktop/comp9323/ivanteongbot/fb_ivanteongbot/views.py", line 15, in IvanTeongBotView
@method_decorator(csrf_exempt)
NameError: name 'method_decorator' is not defined
以下代码是我的应用程序目录的views.py 中的代码：
from django.shortcuts import render
# ivanteongbot/fb_ivanteongbot/views.py
from django.views import generic
from django.http.response import HttpResponse
from django.views.decorators.csrf import csrf_exempt # add this
# Create your views here.
class IvanTeongBotView(generic.View):
def get(self, request, *args, **kwargs):
if self.request.GET['hub.verify_token'] == '2318934571':
return HttpResponse(self.request.GET['hub.challenge'])
else:
return HttpResponse('Error, invalid token')
@method_decorator(csrf_exempt)
def dispatch(self, request, *args, **kwargs):
return generic.View.dispatch(self, request, *args, **kwargs)
# Post function to handle Facebook messages
def post(self, request, *args, **kwargs):
# Converts the text payload into a python dictionary
incoming_message = json.loads(self.request.body.decode('utf-8'))
# Facebook recommends going through every entry since they might send
# multiple messages in a single call during high load
for entry in incoming_message['entry']:
for message in entry['messaging']:
# Check to make sure the received call is a message call
# This might be delivery, optin, postback for other events
if 'message' in message:
# Print the message to the terminal
print(message)
return HttpResponse()
这就是我的 urls.py 中的内容：
# ivanteongbot/fb_ivanteongbot/urls.py
from django.conf.urls import include, url # add this
from .views import IvanTeongBotView
urlpatterns = [
url(r'^99789126bd00b5454d999cf3a9c3f8a9274d4e1460ac4b9863/?$', IvanTeongBotView.as_view())
]
不确定方法声明有什么问题，因为我做了一些谷歌搜索，它似乎以正确的方式声明，就像我的用户指南一样。