Cookie:
1.保存在用户浏览器
2.可以主动清除
3.可以被伪造
4.跨域名 Cookie 不共享
创建一个项目：user_manager 和应用： app01
创建数据库，添加 models.py
from django.db import models
# Create your models here.
class Classes(models.Model):
caption = models.CharField(max_length=32)
class Student(models.Model):
name = models.CharField(max_length=32)
cls = models.ForeignKey(Classes, on_delete=models.CASCADE)
class Teacher(models.Model):
name = models.CharField(max_length=32)
cls = models.ForeignKey(Classes, on_delete=models.CASCADE)
class Administrator(models.Model):
username = models.CharField(max_length=32)
password = models.CharField(max_length=32)修改 urls.py
from django.contrib import admin
from django.urls import path
from app01 import views
urlpatterns = [
path('admin/', admin.site.urls),
path('login.html', views.login),
path('index.html', views.index),
]在 templates 文件夹下创建两个 html 文件
# login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="login.html" method="post">
{% csrf_token %}
<div>
<label for="user">用户名: </label>
<input id="user" type="text" name="user">
</div>
<div>
<label for="pwd">密码: </label>
<input id="pwd" type="password" name="pwd">
</div>
<div>
<label></label>
<input type="submit" value="登录">
<span style="color: red;">{{ msg }}</span>
</div>
</form>
</body>
</html>
# index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1> Hello {{ username }} </h1>
</body>
</html>添加 views.py
from django.shortcuts import render, redirect
# Create your views here.
from app01 import models
def login(req):
# models.Administrator.objects.create(
# username='klvchen',
# password='klvchen'
# )
message = ""
if req.method == "POST":
user = req.POST.get('user')
pwd = req.POST.get('pwd')
c = models.Administrator.objects.filter(username=user, password=pwd).count()
if c:
rep = redirect('index.html')
rep.set_cookie('username', user)
return rep
else:
message = "用户名或密码错误"
return render(req, 'login.html', {'msg': message})
def index(req):
username = req.COOKIES.get('username')
if username:
return render(req, 'index.html', {'username': username})
else:
return redirect('/login.html')初始化数据库
python manage.py makemigrations
python manage.py migrate启动
python manage.py runserver 8000访问 http://127.0.0.1:8000/index.html
输入错误的用户名或密码
输入正确的用户名和密码
