（1）创建校验中间件文件：

utils/middleware.py文件内容如下：

from django.utils.deprecation import MiddlewareMixin
from django.shortcuts import redirect


class AuthMiddleware(MiddlewareMixin):

    def process_request(self, request):
        # 1.不用登录就可以访问处理
        if request.path_info in ["/login/", "/img/code/"]:
            return

        # 2.获取session
        info_dict = request.session.get("info")

        # 未登录
        if not info_dict:
            return redirect('/login/')

        # 已登录, 无return默认return None
        request.info_dict = info_dict

（2）设置settings.py文件中添加中间件：

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.middleware.AuthMiddleware'
]

myweb/views.py文件中定义home函数

def home(request):
    # request.info_dict['name']
    return render(request, 'home.html')

（3）访问测试：

直接打开http://xxxx/home，跳转到login页面

Django项目：五、基于中间件进行用户校验_django