1.配置文件
MIDDLEWARE = [ 'django.middleware.cache.UpdateCacheMiddleware' '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', 'django.middleware.cache.FetchFromCacheMiddleware', ] CACHE_MIDDLEWARE_SECONDS = 20 # 设置超时时间20秒第一行和最后一行，位置不能放错，只能放第一，和最后一行， 又报错是 ModuleNotFoundError: No module named ‘django.middleware.cache.UpdateCacheMiddlewaredjango’; ‘django.middleware.cache’ is not a package 因为： 这里的逗号没写
