django笔记10 cookie整理

感谢武沛齐老师 Alex老师
cookie  没有cookie所有的网站都登录不上
    客户端浏览器上的一个文件
        {'user':'ljc'}
        {"user":'zpt'}
        request.COOKIES.get('..')
        response.set_cookie('..')

        加密
        obj = HttpResponse('s')
        obj.set_signed_cookie('username',"kangbazi",salt="afajkfa")

        解密
        var w = request.get_signed_cookie('username',salt="afajkfa")

        import hashlib
        m = hashlib.md5('fdaf')
        m.update('afda')

装饰器：

        def auth(func):    #装饰器
            def inner(request,*args, **kwargs):
                v = request.COOKIES.get('username111')
                if not v:
                    return redirect('/login/')
                return func(request,*args, **kwargs)
            return inner

        FBV:
        def auth(func):
            def inner(request,*args, **kwargs):
                v = request.COOKIES.get('username111')
                if not v:
                    return redirect('/login/')
                return func(request,*args, **kwargs)
            return inner

        CBV:
        from django import views
        from django.utils.decorators import method_decorator

        @method_decorator(auth, name='dispatch')
        class Order(views.View):
            # @method_decorator(auth)
            # def dispatch(self, request, *args, **kwargs):
            #     return super(Order,self).dispatch(request,*args, **kwargs)

            @method_decorator(auth)
            def get(self,request):
                v = request.COOKIES.get('username111')
                return render(request, 'index.html', {'current_user': v})

            def post(self,request):
                v = request.COOKIES.get('username111')
                return render(request, 'index.html', {'current_user': v})
cookie1:
    request.COOKIES.get('username111')  #获取用户端发来的cookie  获取

    response = render(request,"index.html")
    response = redirect('/index/')
    #设置cookie 关闭浏览器失效（还可以设置超时时间）
    response.set_cookie('key',"value")  #关闭浏览器时 才失效     设置
    return response

cookie2:
    request.COOKIES.get('username111')  #获取用户端发来的cookie

    response = render(request,"index.html")
    response = redirect('/index/')
    #设置cookie 10秒后会过期 max_age =   截止时间失效
    response.set_cookie('key',"value",max_age = )
    import datetime
    current_time = datetime.datetime.utcnow()
    current_time = current_date + datetime.timedelta(seconds=)
    #expires 具体到哪个时间节点
    response.set_cookie('key',"value", expires = current_time)
    return response

cookie3:    #document.cookie
    request.COOKIES.get('username111')  #获取用户端发来的cookie

    response = render(request,"index.html")
    response = redirect('/index/')
    #设置cookie 关闭浏览器失效（还可以设置超时时间）
    #path='/'默认的地址
    #domain=None  生效的域名
    #secure=False  https传输 如果是 要设置为true
    #httponly=True  加上他好一点 在js获取cookie时 获取不到
    response.set_cookie('key',"value")  #关闭浏览器时 才失效
    return response

user_info = {
    'dachengzi':{'pwd':''},
    'kanbazi':{'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:
            res = redirect('/index/')
            res.set_cookie('username111',u)
            return res
        else:
            return render(request, 'login.html')

def index(request):
    #获取当前已经登录的用户名
    v = request.COOKIES.get('username111')
    if not v:
        return redirect('/login')

    return render(request,'index.html',{'current_user':v})

    缓存
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