django中间件

# 适用于django2.0以上版本
from django.http import HttpResponse
from django.utils.deprecation import MiddlewareMixin  # django2.0


# 中间件类
class BlockedIPSmiddleware(MiddlewareMixin):
    ON_IP=['127.0.0.1']     # 禁止IP
    def process_view(self,request,view_func,*view_args,**view_kwargs):
        """视图调用之前会调用"""
        # 客户端IP
        user_ip = request.META['REMOTE_ADDR']
        if user_ip in BlockedIPSmiddleware.ON_IP:
            # ip在就禁止 不在就什么也不做
            return HttpResponse("%s被禁止仿问"%user_ip)
        
        
    # 写完之后要注册
    # 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',
    #     'blogtest.middleware.BlockedIPSmiddleware',         # 注册中间件类
    # ]