Django操作session实例

session项目文件：

templates模板：

login.html

 1 {% load static %}
 2 <!DOCTYPE html>
 3 <html lang="en">
 4 <head>
 5     <meta charset="UTF-8">
 6     <title>login</title>
 7 </head>
 8 <body>
 9 <div>
10     用户名：<input type="text" id="username"><br>
11     密码：<input type="password" id="password"> <br>
12     <button id="submit">登录</button><pan id="warning" style="color: red"></pan>
13     {% csrf_token %}
14 </div>
15 </body>
16 <script src="{% static 'jquery-3.4.1.js' %}"></script>
17 {#<!--<script src="{% static 'js/login.js' %}"></script>--><!--ajax中有url的反向解析，只能放在html模板中-->#}
18 <script>
19  $(function () {
20         $('#submit').click(function () {
21             $.ajax({
22                 url:"{% url 'login' %}",
23                 type:'post',
24                 data:{
25                     username:$('#username').val(),
26                     password:$('#password').val(),
27                     csrfmiddlewaretoken:$('input[name=csrfmiddlewaretoken]').val(),//可以直接放在headers里边
28                 },
29                 success:function (response) {
30                     console.log(response)
31                     if (response.status===0){
32                         //$('#submit').after('<span><i>账号或密码有误</i></span>')
33                         $('#warning').text('账号或密码有误')
34                     }else if (response.status===1){
35                         location.href=response.url
36                     }
37                 }
38             })
39         })
40     });
41 </script>
42 </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 <div>
 9     <h1>欢迎来到首页</h1>
10 </div>
11 <a href='{% url 'more' %}'>more</a>
12 </body>
13 </html>

index.html

　　more.html

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>more</title>
 6 </head>
 7 <body>
 8 <div><h1>更多信息</h1></div>
 9 </body>
10 </html>

more.html

viwes.py

 1 from django.shortcuts import render,redirect
 2 from django.http import JsonResponse
 3 from django.urls import reverse
 4 # Create your views here.
 5 def login(request):
 6     if request.method=='GET':
 7         return render(request,'login.html')
 8     elif request.method=='POST':
 9         name=request.POST.get('username')
10         psd=request.POST.get('password')
11         if name=='yang' and psd=='123':
12             #在使用session之前必须在数据库创建相关的表(django_session)
13             #调用request.session首先会接收请求头部的cookie是否有sessionid，进行表查询对比
14             #如果有重新生成一个sessionid进行覆盖更新记录，
15             # 没有则新建存进表中的session_key,同时将字典信息加密自动存进表中的session_data字段
16             request.session['status']=True
17             request.session['name']=name
18             status=1
19             url=reverse('index')
20         else:
21             status=0
22             url=''
23         return JsonResponse({'status':status,'url':url})
24  
25 def login_auth(func):
26     def inner(request):
27         if request.session.get('status'):#在判断网页请求的状态时，直接调用request.session从djang_session表中读取数据验证
28             return func(request)
29         else:
30             return redirect('login')
31     return inner
32 @login_auth
33 def index(request):
34     return render(request,'index.html')
35  
36 @login_auth
37 def more(request):
38     # request.session.flush()#同时删除客户端和服务端的session
39     return render(request,'more.html')

views.py

urls.py

 1 from django.conf.urls import url
 2 from django.contrib import admin
 3 from app01 import views
 4  
 5 urlpatterns = [
 6     url(r'^admin/', admin.site.urls),
 7     url(r'^login/', views.login, name='login'),
 8     url(r'^index/', views.index, name='index'),
 9     url(r'^more/', views.more, name='more'),
10 ]

urls.py