Django入门到放弃之cookies
request.COOKIES
request.COOKIES['key']
# 获取带签名的cookie
request.get_signed_cookie(key, default=RAISE_ERROR, salt='', max_age=None) #获取signed类型cookies
default: 默认值
salt: 加密盐
max_age: 后台控制过期时间
rep = HttpResponse(...)
rep = render(request, ...)
rep.set_cookie(key,value,...)
# 带签名的cookie
rep.set_signed_cookie(key,value,salt='加密盐', max_age=None, ...)
return rep
参数:
key, 键
value='', 值
max_age=None, 超时时间
expires=None, 超时时间(IE requires expires, so set it if hasn't been already.)
path='/', Cookie生效的路径,/ 表示根路径,特殊的:根路径的cookie可以被任何url的页面访问
domain=None, Cookie生效的域名
secure=False, https传输
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)
def logout(request):
rep = redirect("/login/")
rep.delete_cookie("user") # 删除用户浏览器上之前设置的usercookie值,实质是将浏览器的cookies清空
return rep
# 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')
def login_auth(func):
def inner(request,*args,**kwargs):
is_login = request.COOKIES.get('is_login')
print(is_login)
if is_login == 'True':
res = func(request,*args,**kwargs)
print('##############################')
return res
else:
return redirect('login')
return inner
@login_auth
def index(request):
return render(request, 'cookies/index.html')
@login_auth
def home(request):
return render(request, 'cookies/home.html')
def login(request):
if request.method == 'GET':
return render(request, 'cookies/login.html')
else:
username = request.POST.get('username')
password = request.POST.get('password')
if username == 'bge' and password == '666':
path = request.GET.get('returnurl')
if path:
ret = redirect(path})
else
ret = redirect('index')
ret.set_cookie('is_login',True)
return ret
else:
return HttpResponse('登录失败')
"一劳永逸" 的话,有是有的,而 "一劳永逸" 的事却极少