基础版
写2个路由和视图函数，一个是登录，写入cookie，访问order，必须登录以后才能访问，否则重定向到登录页面，order页面实现退出功能，清除cookie，利用登录认证装饰器，必须登录之后获取到了cookie才能进入order函数
模板文件：login页面三个input标签，分别为用户名，密码，提交按钮。out页面只有一个退出按钮。代码略
def login_auth(func):
def inner(request,*args,**kwargs):
cookies = request.COOKIES.get('username')
if cookies:
res = func(request,*args,**kwargs)
return res
else:
return redirect('/login/')
return inner
def login(request):
if request.method == 'GET':
return render(request,'login.html')
else:
username = request.POST.get("username")
passwd = request.POST.get("passwd")
if username == 'yang' and passwd == '123':
obj = redirect("/out/")
obj.set_cookie("username",'yang')
return obj
else:
return HttpResponse('账号或密码错误')
@login_auth
def out(request):
if request.method == 'GET':
# cookies = request.COOKIES.get('username')
# if cookies:
return render(request,'out.html')
# else:
# return redirect('/login/')
else:
obj = HttpResponse('退出成功')
obj.delete_cookie('username')
return obj
改进版:
实现每个网站都需要登录，且登录后直接返回原页面
cookie版登陆校验
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')
@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
<!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>