django 程序，想把不到www301到待www，如何做呢？

Question

想学习下，这样的操作怎么在中间件里面完成呢？

Answer 1

用中间件搞定了。

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',
    'zq_zzc.middleware.CommonMiddleware',]

MIDDLEWARE .py

from django.utils.deprecation import MiddlewareMixin
from django import http
class CommonMiddleware(MiddlewareMixin):
    def process_request(self, request):
        if request.get_host().split('.')[0]!='www' and request.get_host().split('.')[0]!='m' and request.get_host().split('.')[0]!='127':
            return http.HttpResponsePermanentRedirect("http://www.{}{}".format(request.get_host(),request.get_full_path()))
        return None


    def process_response(self, request, response):
        return response
        
        

Answer 2

取 host 头，判断后作 301 返回。