Django:cookie

一，Django中操作cookie

　　1，获取cookie

request.COOKIES[=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 =rep.set_cookie(key,value,...)
rep.set_signed_cookie(key,salt='加密盐',...)

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

3，删除cookie

= redirect() rep

inner(request,*args,**= request.get_signed_cookie(,salt=,default=None) == func(request,** redirect(def login(request):
if request.method == "POST":
username = request.POST.get("username")
passwd = request.POST.get("password")
if username == "xxx" and passwd == "dashabi":
next_url = request.GET.get("next")
if next_url and next_url != "/logout/":
response = redirect(next_url)
else:
response = redirect("/class_list/")
response.set_signed_cookie("login","yes",salt="SSS")
return response
return render(request,"login.html")

cookie版登录

# 检查用户session的随机字符串在数据库中是否 request.session.exists("session_key") # 删除当前用户的所有Session数据

request.session.set_expiry(value) * 如果value是个整数，session会在些秒数后失效。 * 如果value是个datatime或timedelta，session就会在这个时间后失效。 * 如果value是0,用户关闭浏览器session就会失效。 * 如果value是None,session会依赖全局session失效策略。</pre>

if user == "alex" and pwd == "alex1234": # 设置session request.session["user"] = user # 获取跳到登陆页面之前的URL next_url = request.GET.get("next") # 如果有，就跳转回登陆之前的URL if next_url: return redirect(next_url) # 否则默认跳转到index页面 else: return redirect("/index/") return render(request,"login.html")

Django中默认支持Session，其内部提供了5种类型的Session供开发者使用。

def dispatch(self,request,**kwargs): return super(HomeView,self).dispatch(request,**kwargs) def get(self,request): return render(request,"home.html") @method_decorator(check_login) def post(self,request): print("Home View POST method...") return redirect("/index/")</pre>

@method_decorator(check_login) def dispatch(self,"home.html") def post(self,request): print("Home View POST method...") return redirect("/index/")</pre>

from django.utils.decorators import method_decorator

@method_decorator(check_login,name="get")
@method_decorator(check_login,name="post")
class HomeView(View):

def dispatch(self,**kwargs):
    return super(HomeView,**kwargs)

def get(self,request):
    return render(request,"home.html")

def post(self,request):
    print("Home View POST method...")
    return redirect("/index/")</pre>

from django.views.decorators.csrf import csrf_exempt,csrf_protect

class HomeView(View):

@method_decorator(csrf_exempt)
def dispatch(self,request):
    print("Home View POST method...")
    return redirect("/index/")</pre>

# user_list = data[0:10] # user_list = data[10:20] try: current_page = int(request.GET.get("page")) except Exception as e: current_page = 1 per_page = 10 # 数据总条数 total_count = len(data) # 总页码 total_page,more = divmod(total_count,per_page) if more: total_page += 1 # 页面最多显示多少个页码 max_show = 11 half_show = int((max_show-1)/2) if current_page <= half_show: show_start = 1 show_end = max_show else: if current_page + half_show >= total_page: show_start = total_page - max_show show_end = total_page else: show_start = current_page - half_show show_end = current_page + half_show # 数据库中获取数据 data_start = (current_page - 1) * per_page data_end = current_page * per_page user_list = data[data_start:data_end] # 生成页面上显示的页码 page_html_list = [] # 加首页 first_li = '<li><a href="/user_list/?page=1">首页</a></li>' page_html_list.append(first_li) # 加上一页 if current_page == 1: prev_li = '<li><a href="#">上一页</a></li>' else: prev_li = '<li><a href="/user_list/?page={}">上一页</a></li>'.format(current_page - 1) page_html_list.append(prev_li) for i in range(show_start,show_end+1): if i == current_page: li_tag = '<li class="active"><a href="/user_list/?page={0}">{0}</a></li>'.format(i) else: li_tag = '<li><a href="/user_list/?page={0}">{0}</a></li>'.format(i) page_html_list.append(li_tag) # 加下一页 if current_page == total_page: next_li = '<li><a href="#">下一页</a></li>' else: next_li = '<li><a href="/user_list/?page={}">下一页</a></li>'.format(current_page+1) page_html_list.append(next_li) # 加尾页 page_end_li = '<li><a href="/user_list/?page={}">尾页</a></li>'.format(total_page) page_html_list.append(page_end_li) page_html = "".join(page_html_list) return render(request,"user_list.html",{"user_list": user_list,"page_html": page_html})</pre>

def user_list(request): pager = Pagination(request.GET.get("page"),len(data),request.path_info) user_list = data[pager.start:pager.end] page_html = pager.page_html() return render(request,"user_list.html",{"user_list": user_list,"page_html": page_html})

Django:cookie

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