Django视图函数和视图类

from django.shortcuts import render, HttpResponse, redirect
from django.views import View

def index(request):
    return ***

class login(View):
    def get(self):
        return ***

    def post(self):
        return ***

return render(request, ‘login.html‘, {‘error‘: ‘用户名或密码错误‘})　　#返回页面及参数
return redirect(reverse(‘blog:index‘))　　#重定向
return HttpResponse(‘返回值‘)　　#通用返回