Python cookie未保存或以某种方式无法访问CGI脚本 [英] Python cookie is either not saved or somehow not accessible to CGI script

问题描述

我认为这将有一个明显的答案...我一直在查看一堆Cookie的例子在Python中，并收集，正确的顺序来呈现东西是：获取cookie如果存在，设置cookie数据，打印内容类型头，输出cookie，然后打印一切。我已经建立在小部分，我不能告诉什么是使这个版本不工作。它创建一个cookie（一个数字字符串，只要我在Firefox / Chrome中可以看到），但它似乎没有创建UID，所以当另一个脚本尝试使用UID时，它会创建一个错误。

I think this is going to have an obvious answer... I've been looking at a bunch of examples of cookies in Python and have gathered that the proper order to present things is: get the cookie if it exists, set cookie data, print the content type header, output the cookie, and then print everything else. I've built this up in small parts and I can't tell what's making this version not work. It does create a cookie (with a string of numbers, as far as I can see in Firefox/Chrome) but it doesn't seem to create the UID, so that when another script tries to use the UID, it create an error.

这里是它的肉，跳过导入（似乎都没关系），数据库连接器等：

Here's the meat of it, skipping imports (all seem to be okay), database connector, etc.:

c = Cookie.SimpleCookie(os.environ.get("HTTP_COOKIE"))
mode = "first"
when = c.get("lastvisit")

if when is None: 
    if form.has_key("username") and form.has_key("passwd"):
        username = form['username'].value
        cursor.execute('SELECT passwd, uid FROM user WHERE username="%s"' % (username))
        person = cursor.fetchall()[0] 
        check = person[0]
        if check == md5.new(form['passwd'].value).hexdigest():
            c = Cookie.SimpleCookie()
            c["lastvisit"] = str(time.time())
            c["uid"] = person[1]
            mode = "redirect"
        else: # reload login page with error message
            mode = "tryagain"
    else: # go to first login form
        mode = "first"
else: # was already logged in
    mode = "redirect"

if mode == "redirect":
    print("Location:http://somewhere.com\nContent-Type: text/html\n\n")
else:
    print("Content-Type: text/html")
    print c.output()
    print("\n\n")
    if mode == "first":
        print("<h2>Please log in</h2>")
    elif mode == "tryagain":
        print("<h2>Please try again</h2>")
    print('<form method=POST action="self.cgi">Username: <input type=textarea name="username">Password: <input type=password name="passwd"><input type=submit value="Submit">')

我尝试做

c = Cookie.SimpleCookie(os.environ.get("HTTP_COOKIE"))
uid = c.get("uid")

是我真正想做的），uid返回为None。

here (or in another script in the same directory, which is what I actually want to do), uid gets returned as None.

推荐答案

您正在创建cookie对象，然后运行重定向代码路径，而不设置cookie。

I think you just had tired eyes. You're creating the cookie object and then you're running the "redirect" codepath, which doesn't set the cookie.

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