• Django-session相关操作+redis


    • 项目结构 demo中的url配置
    from django.urls import path,include
    
    
    urlpatterns = [
        path(r'sess/', include('sess.urls'))
    ]
    • sess中url配置
     1 from django.urls import path
     2 from sess import views
     3 
     4 
     5 urlpatterns = [
     6     path('index/', views.index),
     7     path('info/', views.info),
     8     path('delete/session/', views.delete_session),
     9     path('login/', views.login)
    10 ]
    • sess-views中实现了未登录跳转至登录页面,登录后跳转至首页功能,
      delete_session,清除数据
    • session的操作

      - 添加session:request.session['name'] = 'zhangsan'
      - 获取session中的值: request.session.get('name')
      - 删除一条key-value: del request.session['name']
      - 删除全部内容: request.session.clear()
      - 删除在存储中session记录: request.session.flush()

     1 import datetime
     2 
     3 from django.http import HttpResponse, JsonResponse
     4 from django.shortcuts import redirect
     5 from django.shortcuts import render
     6 
     7 
     8 def index(request):
     9     print(type(request.session))
    10     #设置session
    11     #request.session['username'] = 'chen'
    12     #设置过期时间
    13     #request.session.set_expiry(30)
    14     # 返回Json字符串
    15     return HttpResponse('首页')
    16 
    17 
    18 def login(request):
    19     if request.method == 'GET':
    20         # 渲染页面
    21         return render(request, 'login.html')
    22     else:
    23         # post请求,说明要提交登录的数据
    24         username = request.POST.get('username')
    25         password = request.POST.get('password')
    26         # 登录成功
    27         # 在session中记录用户信息
    28         request.session['username'] = username
    29         request.session['password'] = password
    30         return redirect('/sess/index/')
    31 
    32 
    33 #登录之后才可访问页面
    34 def info(request):
    35     # 先判断是否登录
    36     # 如果登录了那么可以正常访问.
    37     # 如果没登录, 就跳转到登录页面.
    38     username = request.session.get('username')
    39     if username:
    40         # 登录成功, 正常显示页面
    41         return HttpResponse(f"hell {username}")
    42     else:
    43         # 没登录, 跳转去登录页面
    44         return redirect('/sess/login/')
    45 
    46 def delete_session(request):
    47     #单独删除key的session
    48     #del request.session['username']
    49     #request.session.clear()
    50     request.session.flush()
    51     return HttpResponse('deleting success')
    • 连接redis做30秒缓存数据-30秒后刷新数据清除
    • django本身没有实现存储session到redis的功能, 需要借助第三方的包django-redis
    • pip install django-redis==4.10.0 -i https://pypi.douban.com/simple
    • demo中需填写下redis配置
    •  1 STATIC_URL = '/static/'
       2 
       3 CACHES = {
       4     "default": {
       5         "BACKEND": "django_redis.cache.RedisCache",
       6         "LOCATION": "redis://127.0.0.1:6379/1",
       7         "OPTIONS": {
       8             "CLIENT_CLASS": "django_redis.client.DefaultClient",
       9         }
      10     }
      11 }
      12 SESSION_ENGINE = "django.contrib.sessions.backends.cache"
    •  

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  • 原文地址:https://www.cnblogs.com/cheng10/p/13955238.html
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