Python的Bottle框架中获取制定cookie的教程

这两天为用bottle+mongodb写的一个项目加上登录功能,无奈怎么都获取不到保存的cookie,文档给出让我们这样操作cookie的代码片段:

@route('/login')
def login ():
  username = request .forms .get('username ')
  password = request .forms .get('password ')
  if check_user_credentials(username, password):
     response .set_cookie("account", username, secret= 'some-secret-key')
     return "Welcome ％s!You are now logged in." ％ username
  else :
     return "Login failed."

@route('/restricted')
def restricted_area ():
  username = request .get_cookie("account", secret= 'some-secret-key')
  if username:
     return "Hello ％s.Welcome back." ％ username

虽然文档上没有但是还有一种操作cookie的方式:

from bottle import request, response

@route('/login', method="POST")
def login():
 user = request.POST['user']
 passwd = request.POST['passwd']

if check_user_right(user,passwd):
   response.COOKIES['account'] = user
 else:
   pass

@route('/admin')
def admin():
 user = request.COOKIES['user']
 if user:
   pass

但是无论我用哪种方式操作我都无法获取cookie,为什么呢.百思不得其解.但是我的一个处理文章点击率的提醒了我,代码如下:

@route('/archrives/:aid#\d+#')
def article_show(aid):
 db = dbconn.ConnDB()
 artid = int(aid)
 # 获取客户端ip
 remoteip = request.environ.get('REMOTE_ADDR')

artcookie = remoteip+'ip'+aid
 print request.COOKIES.keys()

# 判断cookie是否存在
 if artcookie in request.COOKIES.keys():
   # 存在则更新有效时间
   response.COOKIES[artcookie] = True
   response.COOKIES[artcookie]['max-age'] = 500
 else:
   # 不存在则更新文章查看次数
   db.posts.update({"id":artid}, {"$inc":{"views":1}})

# 并设置cookie
   response.COOKIES[artcookie] = True
   response.COOKIES[artcookie]['max-age'] = 500

TEMPLATE['posts'] = getArtList({"id":artid})
 TEMPLATE.update(setTempVar())

return template('article.html', TEMPLATE)

这里是可以正常获取到cookie的,而且代码没有任何区别.唯一的区别就是用户认证是跳转了页面.所以我help了一下:

from bottle import response
help(response.set_cookie)

help的结果其中有两个参数一个是path,和domain:

:param domain: the domain that is allowed to read the cookie.
  (default: current domain)
 :param path: limits the cookie to a given path (default: current path)

明显bottle的cookie默认只在当前路径下能读取的到,所以要别的页面读取到cookie我们的代码须改成如下:

from bottle import request, response

@route('/login', method="POST")
def login():
 user = request.POST['user']
 passwd = request.POST['passwd']

if check_user_right(user,passwd):
   response.COOKIES['account'] = user
   response.COOKIES['account']['path'] = '/admin'
 else:
   pass

@route('/admin')
def admin():
 user = request.COOKIES['user']

这样我们就能在别的路径下访问我们设定的cookie.