当我连接到我的站点时,出现以下错误:
RuntimeError:会话不可用,因为未设置任何秘密密钥。将应用程序上的secret_key设置为唯一且秘密的内容。
下面是我的服务器代码。
from flask import Flask, session from flask.ext.session import Session SESSION_TYPE = 'memcache' app = Flask(__name__) sess = Session() nextId = 0 def verifySessionId(): global nextId if not 'userId' in session: session['userId'] = nextId nextId += 1 sessionId = session['userId'] print ("set userid[" + str(session['userId']) + "]") else: print ("using already set userid[" + str(session['userId']) + "]") sessionId = session.get('userId', None) return sessionId @app.route("/") def hello(): userId = verifySessionId() print("User id[" + str(userId) + "]") return str(userId) if __name__ == "__main__": app.secret_key = 'super secret key' sess.init_app(app) app.debug = True app.run()
如您所见,我确实设置了应用密钥。我究竟做错了什么?
还有其他会话选项吗?
其他信息:在Linux Mint上运行Python 2.7
全贴:
Traceback (most recent call last): File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__ return self.wsgi_app(environ, start_response) File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app response = self.make_response(self.handle_exception(e)) File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception reraise(exc_type, exc_value, tb) File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app response = self.full_dispatch_request() File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request rv = self.handle_user_exception(e) File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception reraise(exc_type, exc_value, tb) File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request rv = self.dispatch_request() File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request return self.view_functions[rule.endpoint](**req.view_args) File "/home/sean/code/misc/session/sessiontest.py", line 27, in hello userId = verifySessionId() File "/home/sean/code/misc/session/sessiontest.py", line 16, in verifySessionId session['userId'] = nextId File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/werkzeug/local.py", line 341, in __setitem__ self._get_current_object()[key] = value File "/home/sean/code/misc/hangman/venv/lib/python2.7/site-packages/flask/sessions.py", line 126, in _fail raise RuntimeError('the session is unavailable because no secret ' RuntimeError: the session is unavailable because no secret key was set. Set the secret_key on the application to something unique and secret.
在你的情况下,NullSessionInterface会话实现会引发异常,这是使用Flask-Session时的默认会话类型。这是因为你从未真正将SESSION_TYPE配置提供给Flask;仅在模块中将其设置为全局变量是不够的。所述瓶会话快速启动的示例代码并设置一个全局,但随后通过调用使用当前模块作为配置对象app.config.from_object(__name__)。
NullSessionInterface
SESSION_TYPE
app.config.from_object(__name__)
对于Flask 0.10或更高版本,此默认设置没有太大意义;NullSessionFlask 0.8或0.9可能是有意义的,但是在当前版本中,flask.session.NullSession该类用作错误信号。就你而言,它现在给你错误的错误消息。
NullSessionFlask 0.8
flask.session.NullSession
将SESSION_TYPE配置选项设置为其他内容。挑一个redis,memcached,filesystem或mongodb,并确保其设置在app.config(直接或通过各种Config.from_*方法)。
redis,memcached,filesystem
mongodb
Config.from_*
为了进行快速测试,将其设置filesystem为最简单。那里有足够的默认配置,无需额外的依赖即可正常工作:
filesystem
if __name__ == "__main__": app.secret_key = 'super secret key' app.config['SESSION_TYPE'] = 'filesystem' sess.init_app(app) app.debug = True app.run()
如果你看到此错误并且没有使用Flask-Session,则说明设置密码时出了点问题。如果你正在设置app.config[‘SECRET_KEY’]或app.secret_key处于上述if __name__ == "__main__":防护状态,则出现此错误,则可能是通过将Flask项目作为模块导入的WSGI服务器运行了Flask应用程序,并且该__name__ == "__main__"块永远不会运行。
app.secret_key
if __name__ == "__main__"
__name__ == "__main__"