def checkLogin(func):
 
  """
  查看session值用来判断用户是否已经登录
  :param func:
  :return:
  """
  def warpper(request,*args,**kwargs):
    if request.session.get('username', False):
      return func(request, *args, **kwargs)
 
    else:
      return HttpResponse('/login')
  return warpper

from proApp import models, article, base
@base.checkLogin
def index(request):
  dict = {
    "article_list": article.getArticle(),
  }
  return render(request, 'index.html',dict)

from django.shortcuts import render,render_to_response,redirect
def checkLogin(func):
 
  """
  查看session值用来判断用户是否已经登录
  :param func:
  :return:
  """
  def warpper(request,*args,**kwargs):
    if request.session.get('username', False):
      return func(request, *args, **kwargs)

    else:
      return redirect('/login')
  return warpper

from django.views import View
class ClassView(View):
  """类视图的介绍"""

  def get(self, request):
    """get请求方法"""
    print('get请求方法进次函数')
    return HttpResponse('get请求方法')

  def post(self, request):
    """post请求方法进此函数"""
    print('post请求方法')
    return HttpResponse('post请求方法')
  """
 在url中配置
 """
 urlpatterns = [
  url(r"^classview/$", views.ClassView.as_view())
  #ClassView是一个类 需要调用Django自带的as_view方法转换为view

]

#先在子应用文件下新建(自定义).py文件
# 自定义中间键
def outer(fuc):
  print('调用前')
  def inner(*args, **kwargs):
    print('执行前')
    data = fuc(*args, **kwargs)
    print(' 执行后')
    return data
  return inner
#2. settings.py的middleware下面加入自定义的中间件
'user1.middlewares.outer' # 自定义中间件