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类似java中的过滤器
from django.utils.deprecation import MiddlewareMixin
# settings.py 中间件列表中加入 类路径
class MyMiddlewareMixin(MiddlewareMixin):
# 无返回值,或者返回None,请求继续往后走
# 有返回值 redirect HttpResponse render,直接执行process_response
def process_request(self, request):
pass
def process_response(self, request, response):
return response
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',
'utils.MyMiddleware.MyMiddlewareMixin',
]
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