每当我在django项目中运行本地服务器时，都会收到警告和错误消息，提示在Django 1.7中全局中间件类已更改-
即使我使用的是1.8。我的博客http://127.0.0.1:8000/可以很好地加载，但是当我尝试加载管理站点时，我得到了AttributeError at /admin/ 'WSGIRequest' object has no attribute 'user'，据我所知，这与中间件有关。谢谢您的帮助

编辑：我的中间件：

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

错误信息：

Warnings
?: (1_7.W001) Middleware_Classes is not set.
    Hint: Django 1.7 changed the global defaults for the middleware_classes. django.contrib.auth.middleware.AuthenticationMiddleware, django.contrib.sessions.middleware.SessionMiddleware, and django.contrib.messages.middleware.MessageMiddleware, were removed from the defaults. If your project needs this middleware then you should configure this middleware.