Python的Bottle框架中獲取制定cookie的教程

更新時(shí)間：2015年04月24日 15:45:03 作者：C Wong

這篇文章主要介紹了Python的Bottle框架中獲取制定cookie的教程,主要是針對(duì)別的路徑而不是當(dāng)前頁(yè)面的cookie,需要的朋友可以參考下

這兩天為用bottle+mongodb寫的一個(gè)項(xiàng)目加上登錄功能,無(wú)奈怎么都獲取不到保存的cookie,文檔給出讓我們這樣操作cookie的代碼片段:

@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

雖然文檔上沒有但是還有一種操作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

但是無(wú)論我用哪種方式操作我都無(wú)法獲取cookie,為什么呢.百思不得其解.但是我的一個(gè)處理文章點(diǎn)擊率的提醒了我,代碼如下:

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

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

  # 判斷cookie是否存在
  if artcookie in request.COOKIES.keys():
    # 存在則更新有效時(shí)間
    response.COOKIES[artcookie] = True
    response.COOKIES[artcookie]['max-age'] = 500
  else:
    # 不存在則更新文章查看次數(shù)
    db.posts.update({"id":artid}, {"$inc":{"views":1}})

    # 并設(shè)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)

這里是可以正常獲取到cookie的,而且代碼沒有任何區(qū)別.唯一的區(qū)別就是用戶認(rèn)證是跳轉(zhuǎn)了頁(yè)面.所以我help了一下:

from bottle import response
help(response.set_cookie)

help的結(jié)果其中有兩個(gè)參數(shù)一個(gè)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)

明顯bottle的cookie默認(rèn)只在當(dāng)前路徑下能讀取的到,所以要?jiǎng)e的頁(yè)面讀取到cookie我們的代碼須改成如下:

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']

這樣我們就能在別的路徑下訪問我們?cè)O(shè)定的cookie.

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