Django異常中間件：TypeError：object（）不帶參數

Question

我正在使用Django 1.10並嘗試捕獲異常中間件的所有異常。

下面的代碼使得一個內部服務器錯誤：

mw_instance = middleware(handler) 
TypeError: object() takes no parameters 

views.py

from django.http import HttpResponse 

def my_view(request): 
    x = 1/0 # cause an exception 
    return HttpResponse("ok") 

settings.py

MIDDLEWARE = [ 
    'django.middleware.security.SecurityMiddleware', 
    'django.contrib.sessions.middleware.SessionMiddleware', 
    'django.middleware.common.CommonMiddleware', 
    'django.middleware.csrf.CsrfViewMiddleware', 
    'django.contrib.auth.middleware.AuthenticationMiddleware', 
    'django.contrib.messages.middleware.MessageMiddleware', 
    'django.middleware.clickjacking.XFrameOptionsMiddleware', 
    'myproject.middleware.ExceptionMiddleware', 

] 

middleware.py

from django.http import HttpResponse 

class ExceptionMiddleware(object): 
    def process_exception(self, request, exception): 
     return HttpResponse("in exception") 

我已經看到這些object() takes no parameters in django 1.10和其他有關中間件和中間件類的問題，但我不確定這是如何適用於這種情況，或者我真的需要更改以解決問題。

Answer 1

由於您使用的是新MIDDLEWARE設置，您的中間件類必須接受get_response說法：https://docs.djangoproject.com/en/1.10/topics/http/middleware/#writing-your-own-middleware

你可以寫你的類是這樣的：

from django.http import HttpResponse 

class ExceptionMiddleware(object): 
    def __init__(self, get_response): 
     self.get_response = get_response 

    def __call__(self, request): 
     return self.get_response(request) 

    def process_exception(self, request, exception): 
     return HttpResponse("in exception") 

您也可以使用MiddlewareMixin使您的中間件與Pre-1.10和後1.10 Django版本兼容：https://docs.djangoproject.com/en/1.10/topics/http/middleware/#upgrading-pre-django-1-10-style-middleware

from django.http import HttpResponse 
from django.utils.deprecation import MiddlewareMixin 

class ExceptionMiddleware(MiddlewareMixin): 
    def process_exception(self, request, exception): 
     return HttpResponse("in exception")