03: django进阶篇

我不是女神ヾ 2021-11-23 16:58 244阅读 0赞

### 1.1 cookie ###

**　　1、cookie简介**

1. cookie实质就是客户端硬盘中存放的键值对，利用这个特性可以用来做用户验证

2. 比如：\{“username”: “dachengzi”\} \#再次访问url就会携带这些信息过来

**　　2、前端操作cookie**  
　　　　　　说明： 使用下面方法操cookie必须先引入jquery.cookie.js

1. 前端获取cookie值：**  var v = $.cookie**('per\_page\_count');

2. 前端设置cookie值：**  $.cookie**('per\_page\_count',v);

**　　3、后端操作cookie**

说明： response = HttpResponse(...)  或  response ＝ render(request, ...)

1. 后端设置cookie值：**  response.set\_cookie**('username',"zhangsan")

2. 后端后去cookie值：**  request.COOKIES.get**('username')

**　　4、使用cookie实现用户登录、注销 **

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from django.contrib import admin
    from django.urls import path,re_path
    from app01 import views
    
    urlpatterns = [
        path('admin/', admin.site.urls),
        re_path(r'login/$',views.login),
        re_path(r'index/$',views.index),
        re_path(r'logout/$',views.logout),
    ]

urls.py

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from django.shortcuts import render,HttpResponse,redirect
    
    def index(request):
        username = request.COOKIES.get('username')        # 获取cookie
        if not username:
            return redirect('/login/')
        return HttpResponse(username)
    
    def login(request):
        if request.method == "GET":
            return render(request,'login.html',{
         'msg':''})
        if request.method == "POST":
            u = request.POST.get('username')
            p = request.POST.get('pwd')
            print(u,p)
            if u == 'tom' and p == '123':
                res = redirect('/index/')
                res.set_cookie('username',u ,max_age=10)        # 设置500s免登陆
                return res
            else:
                return render(request,'login.html', {
         'msg':'用户名或密码错误'})
    
    def logout(req):
        response = redirect('/login/')
        #清理cookie里保存username
        response.delete_cookie('username')
        return response

views.py

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转载于:https://www.cnblogs.com/xiaonq/p/10962188.html

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