Python3之Django Web框架中间件

中间件的使用:

主要用来处理页面的登录校验、跨站请求伪造防御、日志记录、session设置，权限管理等

具体代码:

class MiddlewareMixin(object):
    def __init__(self, get_response=None):
        self.get_response = get_response
        super(MiddlewareMixin, self).__init__()

    def __call__(self, request):
        response = None
        if hasattr(self, 'process_request'):
            response = self.process_request(request)
        if not response:
            response = self.get_response(request)
        if hasattr(self, 'process_response'):
            response = self.process_response(request, response)
        return response


class DealLoginMiddleware(MiddlewareMixin):
    def process_request(self, request):
        if request.path_info == '/crm/login/':
            return None
        if not request.session.get('user_info'):
            return redirect('/crm/login/')

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

还要在settings中注册一下:

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',
#注册下自定义中间件
'middleware.controller.DealLoginMiddleware'

]