中间件流程

》请求流程

中间件示例代码

》通过中间件，过滤黑名单用户

from django.utils.deprecation import MiddlewareMixin

from django.shortcuts import HttpResponse

class MyTestMiddleware(MiddlewareMixin):
    black_list = ["127.0.0.1"]

    def __init__(self, getresponse):
        print('at init', getresponse)
        self.get_response = getresponse
        print(111)
        # return self.get_response

    def process_view(self,request, view_func, *view_args, **view_kwargs):
        print('URL后，VIEW前，执行process_view')

    def process_request(self, request):
        print("收到请求，产生request对象后，process_request")
        print(request.META.get("REMOTE_ADDR"))
        remote_ip = request.META.get("REMOTE_ADDR")
        if remote_ip in MyTestMiddleware.black_list:
            return HttpResponse("非法用户，禁止通行")

    def process_response(self,request,response):
        print("产生响应对象，返给客户前，process_response ")
        return response