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') deflogin(): username=request.forms.get('username') password=request.forms.get('password') ifcheck_user_credentials(username,password): response.set_cookie("account",username,secret='some-secret-key') return"Welcome%s!Youarenowloggedin."%username else: return"Loginfailed." @route('/restricted') defrestricted_area(): username=request.get_cookie("account",secret='some-secret-key') ifusername: return"Hello%s.Welcomeback."%username
虽然文档上没有但是还有一种操作cookie的方式:
frombottleimportrequest,response @route('/login',method="POST") deflogin(): user=request.POST['user'] passwd=request.POST['passwd'] ifcheck_user_right(user,passwd): response.COOKIES['account']=user else: pass @route('/admin') defadmin(): user=request.COOKIES['user'] ifuser: 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+#') defarticle_show(aid): db=dbconn.ConnDB() artid=int(aid) #获取客户端ip remoteip=request.environ.get('REMOTE_ADDR') artcookie=remoteip+'ip'+aid printrequest.COOKIES.keys() #判断cookie是否存在 ifartcookieinrequest.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()) returntemplate('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:
frombottleimportresponse help(response.set_cookie)
help的结果其中有两个参数一个是path,和domain:
:paramdomain:thedomainthatisallowedtoreadthecookie. (default:currentdomain) :parampath:limitsthecookietoagivenpath(default:currentpath)
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:
frombottleimportrequest,response @route('/login',method="POST") deflogin(): user=request.POST['user'] passwd=request.POST['passwd'] ifcheck_user_right(user,passwd): response.COOKIES['account']=user response.COOKIES['account']['path']='/admin' else: pass @route('/admin') defadmin(): user=request.COOKIES['user']
这样我们就能在别的路径下访问我们设定的cookie.