在应用程序中使用会话 [英] Using session in flask app

问题描述

我确定有一些事情我很清楚在Flask中没有了解会话，但是我想在请求之间保存一个ID。我没有能够得到会议工作，所以我尝试了一个简单的Flask应用程序下面，当我加载它，我得到一个内部服务器错误

I'm sure there is something that I'm clearly not understanding about session in Flask but I want to save an ID between requests. I haven't been able to get session to work so I tried a simple Flask app below and when I load it I get an internal server error

#!/usr/bin/env python

from flask import Flask, session

app = Flask(__name__)

@app.route('/')
def run():
    session['tmp'] = 43
    return '43'

if __name__ == '__main__':
    app.run()

为什么我不能使用该值在会议中？

Why can't I use store that value in session?

推荐答案

根据 Flask会议文档：

According to Flask sessions documentation:

...
这意味着用户可以查看您的
cookie的内容，但不能修改它，除非他们知道用于
签名的密钥。

... What this means is that the user could look at the contents of your cookie but not modify it, unless they know the secret key used for signing.

为了使用会话，必须设置密钥。

In order to use sessions you have to set a secret key.

设置密钥 。你应该返回字符串，而不是int。

Set secret key. And you should return string, not int.

#!/usr/bin/env python

from flask import Flask, session

app = Flask(__name__)

@app.route('/')
def run():
    session['tmp'] = 43
    return '43'

if __name__ == '__main__':
    app.secret_key = 'A0Zr98j/3yX R~XHH!jmN]LWX/,?RT'
    app.run()

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