概述
1.获取cookie
request.COOKIES['key']
request.COOKIES.get('key')
request.get_signed_cookie(key, default=RAISE_ERROR, salt='', max_age=None)
参数：
default: 默认值
salt: 加密盐
max_age: 后台控制过期时间
2.设置cookie
rep = HttpResponse(...) 或 rep ＝ render(request, ...) #return的对象 rep.set_cookie(key,value,...)
rep.set_signed_cookie(key,value,salt='加密盐',...)
参数：
key, 键
value='', 值
max_age=None, 超时时间 单位秒
expires=None, 超时时间(IE requires expires, so set it if hasn't been already.) 单位日期
path='/', Cookie生效的路径，/ 表示根路径，特殊的：跟路径的cookie可以被任何url的页面访问 指定生效路径
domain=None, Cookie生效的域名
secure=False, https传输改为True
httponly=False 只能http协议传输，无法被JavaScript获取（不是绝对，底层抓包可以获取到也可以被覆盖
# max_age 10秒失效
result.set_cookie('username',u,max_age=10) # expires 设置失效日期
import datetime
current_date = datetime.datetime.utcnow()
current_date = current_date + datetime.timedelta(seconds=5)
result.set_cookie('username',u,expires=current_date) # 加密
obj = HttpResponse('s')
obj.set_signed_cookie('username',"kangbazi",salt="asdfasdf")
request.get_signed_cookie('username',salt="asdfasdf")
用户登录
利用cookie做用户登录，只有登录成功才能进入后台界面
login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<form action="/login/" method="POST">
<input type="text" name="username" placeholder="用户名" />
<input type="password" name="pwd" placeholder="密码" />
<input type="submit" />
</form>
</body>
</html>
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>欢迎登录：{{ current_user }}</h1>
</body>
</html>
views.py
from django.shortcuts import render,HttpResponse,redirect
from django.core.handlers.wsgi import WSGIRequest
from django.utils.safestring import mark_safe user_info = {
'derek':{'pwd':''},
'jack':{'pwd':''}
} def login(request):
if request.method == 'GET':
return render(request,'login.html') if request.method == 'POST':
u = request.POST.get('username')
p = request.POST.get('pwd')
dic = user_info.get(u) #获取key的value
if not dic:
return render(request,'login.html')
if dic['pwd'] == p:
result = redirect('/index/')
result.set_cookie('username',u) #设置cookie值
#result.set_cookie('username', u, max_age=10) # 设置cookie失效时间10s
return result
else:
return render(request,'login.html') def index(request):
v = request.COOKIES.get('username')
if not v:
return redirect('/login/')
return render(request,'index.html',{'current_user':v})
另外一种设置cookie失效时间的方法
from django.shortcuts import render,HttpResponse,redirect
from django.core.handlers.wsgi import WSGIRequest
from django.utils.safestring import mark_safe user_info = {
'derek':{'pwd':''},
'jack':{'pwd':''}
} def login(request):
if request.method == 'GET':
return render(request,'login.html') if request.method == 'POST':
u = request.POST.get('username')
p = request.POST.get('pwd')
dic = user_info.get(u) #获取key的value
if not dic:
return render(request,'login.html')
if dic['pwd'] == p:
result = redirect('/index/')
result.set_cookie('username',u) #设置cookie值
#result.set_cookie('username', u, max_age=10) # 设置cookie失效时间10s
# 第二种方法 设置失效时间
import datetime
current_date = datetime.datetime.utcnow() #获取当前时间
current_date = current_date + datetime.timedelta(seconds=5)
result.set_cookie('username',u,expires = current_date)
return result
else:
return render(request,'login.html') def index(request):
v = request.COOKIES.get('username')
if not v:
return redirect('/login/')
return render(request,'index.html',{'current_user':v})
定制分页
user_list.html
<body>
<ul>
{% for item in li %}
<li>{{ item }}</li>
{% endfor %}
</ul>
<div>
<select id='pg' onchange="ChangePageSize(this)">
<option value="10">10</option>
<option value="30">30</option>
<option value="50">100</option>
</select>
</div> <div class="pagination">
{{ page_str }}
</div> <script src="/static/jquery-1.12.4.js"></script>
<script src="/static/jquery.cookie.js"></script> <script> $(function () {
var v = $.cookie('per_page_count',{'path':'/user_list/'});
$('#pg').val(v);
}); function ChangePageSize(ths) {
var v = $(this).val();
$.cookie('per_page_count',v,{'path':'/user_list/'});
location.reload()
}
</script>
</body>
views.py
def user_list(request):
current_page = request.GET.get('p', 1)
current_page = int(current_page) per_page_count = request.COOKIES.get('per_page_count',10) #获取cookie值
per_page_count = int(per_page_count) page_obj = Page(current_page,len(LIST),per_page_count) data = LIST[page_obj.start:page_obj.end] page_str = page_obj.page_str("/user_list/") return render(request, 'user_list.html', {'li': data,'page_str': page_str})
登录认证（装饰器）
1.FBV
from django.shortcuts import render,HttpResponse,redirect
from django.core.handlers.wsgi import WSGIRequest
from django.utils.safestring import mark_safe
from django.shortcuts import reverse user_info = {
'derek':{'pwd':''},
'jack':{'pwd':''}
} def login(request):
if request.method == 'GET':
return render(request,'login.html') if request.method == 'POST':
u = request.POST.get('username')
p = request.POST.get('pwd')
dic = user_info.get(u)
if not dic:
return render(request,'login.html')
if dic['pwd'] == p:
result = redirect('/index/')
result.set_cookie('username',u)
return result
else:
return render(request,'login.html') def auth(func):
def inner(request,*args,**kwargs):
v = request.COOKIES.get('username')
if not v:
return redirect('/login/')
return func(request,*args,**kwargs)
return inner @auth
def index(request):
v = request.COOKIES.get('username')
return render(request,'index.html',{'current_user':v})
2.CBV
from django import views
from django.utils.decorators import method_decorator @method_decorator(auth, name='dispatch') # 第一种方式
class Order(views.View):
# @method_decorator(auth) #第二种方式
# def dispatch(self, request, *args, **kwargs):
# return super(Order,self).dispatch(request, *args, **kwargs) # @method_decorator(auth) #单独添加
def get(self, reqeust):
v = reqeust.COOKIES.get('username111') return render(reqeust, 'index.html', {'current_user': v}) v = reqeust.COOKIES.get('username111')
return render(reqeust, 'index.html', {'current_user': v})