Django 中 Cookie 使用即三天免登陆
Django cookie 使用即三天免登陆
需求
访问 http://127.0.0.1:8000/student/login/
点击记住密码，设置缓存保存三天，三天免登陆
不点击记住密码，再次登录时需要手动输入密码
#新创建项目 test31
#新创建 app student
python manage.py startapp student
#配置 settings.py
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'student'
]
# 配置urls test31/urls.py
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^student/',include('student.urls'))
]
#配置子路由
#coding=utf-8
from django.conf.urls import url
import views
urlpatterns = [
url(r'^login/$',views.login_view)
]
#配置视图 views.py
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.http import HttpResponse
from django.shortcuts import render, redirect
# Create your views here.
def login_view(request):
if request.method == 'GET':
#判断登录时是否有cookies
if request.COOKIES.has_key('loginUser'):
#获取用户名和密码
loginUser = request.COOKIES.get('loginUser','').split(',')
uname = loginUser[0]
pwd = loginUser[1]
#传递给前端页面渲染
return render(request,'login.html',{'uname':uname,'pwd':pwd})
else:
return render(request,'login.html')
else:
#获取请求参数
uname = request.POST.get('uname','')
pwd = request.POST.get('pwd','')
response = HttpResponse()
if uname == 'zhangsan' and pwd == '123':
#赋值响应内容
response.content = 'login success!'
# 是否记住密码；判断前端页面传过来的 flag 是否为1 ，为1 那么再次登录界面的时候成为 get 请求，将cookie 信息填入空白处
if request.POST.get('flag') == '1':
response.set_cookie('loginUser',uname+','+pwd,max_age=3*24*60*60,path='/student/')
return response
else:
#清空cookie 信息中的 loginUser
response.delete_cookie('loginUser',path='/student/')
return response
else:
# 重定向至重新登录页面
return redirect('/student/login')
#配置 templates/login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/student/login/" method="post">
{% csrf_token %}
<p>
<label for="sn">姓名：</label><input type="text" name="uname" id="sn" value="{{ uname }}"/>
</p>
<p>
<label for="pd">密码：</label><input type="password" name="pwd" id="pd" value="{{ pwd }}"/>
</p>
<p>
<input type="checkbox" name="flag" value="1" checked/>记住密码
</p>
<p>
<input type="submit" value="login"/>
</p>
</form>
</body>
</html>
效果： 未点击记住密码时没有 cookie：
再次访问http://127.0.0.1:8000/student/login/ 时候不会自动填充账号和密码，也没有cookie
效果： 点击登录时记住密码
再次访问http://127.0.0.1:8000/student/login/ 时候会自动填充账号和密码，并有cookie
补充python3 代码
from django.shortcuts import render
from django.http import HttpResponse
# Create your views here.
def login(request):
if request.method=='POST':
uname=request.POST.get('uname')
passwd=request.POST.get('passwd')
if uname=='lisi' and passwd=='123':
#HttpResponse 源代码是一个类class，创建一个类对象
response=HttpResponse()
#创建一个类实例属性
response.content='登录成功---'
print ('---------------------------')
print (request.POST.get('remeber'))
if request.POST.get('remeber') == '1':
#设置cookie 内容为(键，值，有效期,生效的路径)
response.set_cookie('loginUser',uname + ',' + passwd, max_age=3 * 24 * 60 * 60, path='/student/login')
return response
else:
#清除cookie 信息中的loginUser
response.delete_cookie('loginUser',path='/student/login')
print ('xxxxxxxxxxxxxxxxxxxxxxxxx')
return response
else:
response=HttpResponse()
response.content='账号密码不对！'
return response
else:
if request.COOKIES.get('loginUser'):
#获取用户名和密码
loginUser = request.COOKIES.get('loginUser','').split(',')
print (loginUser)
uname = loginUser[0]
pwd = loginUser[1]
#传递给前端页面渲染
return render(request,'login/login.html',{'uname':uname,'pwd':pwd})
else:
return render(request,'login/login.html')
