逻辑: 首先返回一个登录页面, 认证登录的用户名密码，验证无误后设置cookie， 返回index页面 输入错误返回login重新验证登录。

视图逻辑配置

  1. from django.shortcuts import render,HttpResponse,redirect
  2. from django.views import View
  3. # Create your views here.
  4. def login_auth(func):
  5.     def inner(request,*args,**kwargs):
  6.         is_login = request.COOKIES.get('is_login')
  7.         if is_login == "True":
  8.             ret = func(request,*args,**kwargs)
  9.             return  ret
  10.         else:
  11.             return redirect('login')
  12.     return inner
  14. class Loginview(View):
  15.     '''
  16.     首先返回一个登录页面, 认证登录的用户名密码，验证无误后设置cookie， 返回index页面 输入错误返回login让重新登录
  17.     '''
  18.     def get(self,request):
  19.         return  render(request,'login.html')
  21.     def post(self,request):
  22.         user = request.POST.get('user')
  23.         pwd = request.POST.get('pass')
  25.         if user == 'guo' and pwd == 'guo':
  26.             # 登录成功后设置 cookie
  27.             ret =  render(request,'index.html') # url别名跳转
  28.             ret.set_cookie('is_login',True)
  29.             return ret # 返回home页面
  30.         else:
  31.             return render(request,'login.html')
  33. @login_auth # 判断用户是否登录 判断cookie
  34. def home(request):
  35.     '''
  36.     返回home页面
  37.     '''
  38.     # is_login = request.COOKIES.get('is_login')
  39.     # if is_login == 'True':
  40.     return render(request,'home.html')
  41.     # else:
  42.     #     return render(request,'login.html')

url配置

  1. from django.contrib import admin
  2. from django.urls import path
  3. from test01 import views
  4. urlpatterns = [
  5.     path('admin/', admin.site.urls),
  6.     path('login/',views.Loginview.as_view(),name='login'),
  7.     path('home/', views.home, name='home'),
  9. ]

Html配置

login.html

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>Login</title>
  6. </head>
  7. <body>
  8. <h1> 登录 </h1>
  9.     <form action="/login/" method="post">
  10.         {% csrf_token %}
  11.         用户名<input type="text" name="user">
  12.         密码 <input type="text" name="pass">
  13.         <button>提交</button>
  14.     </form>
  16. </body>
  17. </html>

index.html

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>Index</title>
  6. </head>
  7. <body>
  8. <h1> 这是首页!</h1>
  9.     <a href="/home/">home目录</a>
  11. </body>
  12. </html>

home.html

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>home</title>
  6. </head>
  7. <body>
  8.     <h1> 这里是home目录 </h1>
  9. </body>
  10. </html>