cookie是在客户端的键值对
# 0 会话跟踪，会话保持
# 1 cookie规范
-记住：当前网站在浏览器上cookie个数和大小有限制
-Cookie大小上限为4KB；
-一个服务器最多在客户端浏览器上保存20个Cookie；
-一个浏览器最多保存300个Cookie；
# 2 django中操作cookie
-增：obj.set_cookie('key','value')
-删: obj.delete_cookie('key') # 设置过期
-查: request.COOKIES.get('key')
-改: obj.set_cookie('key','value1')
# 3 带签名的cookie（加盐，加密）
-增：obj.set_signed_cookie('name','lqz','123')
-删: obj.delete_cookie('name') # 设置过期
-查: request.get_signed_cookie('name',salt='123')
-改: obj.set_signed_cookie('name','lqz','123')
2 cookie版登陆校验例
路由：
# cookie版登录
path('login/', views.login),
path('order/', views.order),
path('logout/', views.logout),
path('userinfo/', views.userinfo),
视图函数：
## 登录认证装饰器
def login_auth(func):
def inner(request, *args, **kwargs):
# 登录校验
name = request.COOKIES.get('name')
if name:
res = func(request, *args, **kwargs)
return res
else:
path = request.get_full_path()
return redirect('/login/?returnUrl=%s' % path)
return inner
### cookie版登录
def login(request):
if request.method == 'GET':
return render(request, 'login.html')
else:
name = request.POST.get('name')
password = request.POST.get('password')
if name == 'lqz' and password == '123':
# 写入cookie
# 登录成功，重定向
path = request.GET.get('returnUrl')
if path:
obj = redirect(path)
else:
obj = redirect('/index/')
obj.set_cookie('name', name)
return obj
else:
return HttpResponse('用户名或密码错误')
# def order(request):
# name = request.COOKIES.get('name')
# if name:
# return render(request,'order.html')
# else:
# return redirect('/login')
## 装饰器版本（只要加了装饰器，一旦进入这个视图函数，就表明登录成了）
@login_auth
def order(request):
return render(request, 'order.html')
@login_auth
def userinfo(request):
return render(request, 'userinfo.html')
def logout(request):
obj = HttpResponse('退出登录成功')
obj.delete_cookie('name')
return obj
模板：login.html:
<form action="" method="post">
<p>用户名：<input type="text" name="name"></p>
<p>密码：<input type="password" name="password"></p>
<p><input type="submit" value="提交"></p>
</form>
order.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<a href="/logout/">点我退出</a>
</body>
</html>
userinfo.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>用户信息页面</h1>
</body>
</html>
标签：obj,name,request,django,cookie,使用,return,login From： https://www.cnblogs.com/97zs/p/17914254.html