没有密钥...我想这是别的东西
No Secret Key... I imagine it was something else
我正在使用 Flask/Socketio/Javascript 制作一个聊天应用程序，当我设计“创建频道”功能时，当应用程序 运行 它说 RuntimeError: The session is unavailable because no secret key was set. Set the secret_key on the application to something unique and secret. .
我看过其他与“密钥”相关的主题，但首先：我没有将 secret_key 声明放在奇怪的地方，其次：我记得添加 app.config['SESSION_TYPE']，因为这是我上次绊倒的地方。
我认为问题与 flash 函数有关，因为当我删除它时，一切正常。有什么方法可以让我闪烁一条消息但不会收到错误消息吗？
我的代码：
application.py
import os
import requests
from flask import Flask, jsonify, render_template, request, redirect, url_for, flash
from flask_socketio import SocketIO, emit, join_room, leave_room
app = Flask(__name__)
app.config["SECRET_KEY"] = os.getenv("SECRET_KEY")
app.config['SESSION_TYPE'] = 'filesystem'
app.config['SESSION_PERMANENT']= False
socketio = SocketIO(app)
channels = {"1":0,"2":0,"3":0}
@app.route("/")
def home():
return render_template('home.html', channels = channels)
@app.route("/chat")
def chat():
username = request.args.get('username')
channel_id = request.args.get("channel_id")
if username and channel_id:
channels[channel_id] +=1
return render_template("index.html", username=username, channel_id=channel_id)
print("Wait")
return redirect(url_for('home'))
@app.route("/create")
def make_channel():
channel_name = request.args.get("channel_name")
if channel_name and not str.isspace(channel_name):
channels[channel_name] = 0
flash("Channel created!")
return redirect(url_for('home'))
flash('You have not filled in the channel name!')
return render_template('home.html', channels=channels)
@socketio.on('join_room')
def join_room_event(data):
app.logger.info("{} has joined channel {}. ".format(data['username'], data['channel']))
join_room(data['channel'])
socketio.emit('joined_room', data)
@socketio.on('leave_room')
def leave_room_event(data):
app.logger.info("{} has left channel {}.".format(data['username'], data['channel']))
leave_room(data['channel'])
socketio.emit('left_room', data)
channel_id = data['channel']
channels[channel_id] -= 1
@socketio.on("send")
def vote(data):
emit("announce message", data, broadcast=True)
if __name__ == '__main__':
app.run(debug=True)
home.html
<!DOCTYPE HTML>
<html>
<head>
<title>Hello, world!</title>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
{% if message != () %}
<h4 class="text-danger">{{ message }}</h4>
{% endif %}
<form action="{{ url_for('chat') }}">
<div>
<label>Enter your name:</label>
<label>
<input type="text" name="username">
</label>
</div>
<div>
<label>Enter Channel ID:</label>
<select name="channel_id">
{% for channel in channels %}
<option value="{{ channel }}">{{ channel }} --- {{ channels[channel] }} users online</option>
{% endfor %}
</select>
</div>
<button type="submit">Enter Room</button>
</form>
<form action="{{ url_for('make_channel') }}">
<label>Enter Channel Name:</label>
<label>
<input type="text" name="channel_name">
</label>
<button type="submit">Create Channel</button>
</form>
<script>
document.addEventListener('DOMContentLoaded')
</script>
</body>
</html>
index.html
注意：我知道我不应该将 javascript 和 HTML 放在同一个文件中，所以不要谈论那个。
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://cdn.jsdelivr.net/npm/handlebars@latest/dist/handlebars.js"></script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/socket.io/1.3.6/socket.io.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', () => {
// Connect to websocket
var socket = io.connect(location.protocol + '//' + document.domain + ':' + location.port);
socket.on('connect', () => {
socket.emit('join_room', {
'username': "{{ username }}",
'channel': '{{ channel_id }}'
})
});
// The button should emit the value of the textbox
document.getElementById('send').onclick = e => {
e.preventDefault();
let message_input = document.getElementById('textbox');
const message = message_input.value.trim();
if(message.length){
socket.emit('send', {
'message': message,
'username': "{{ username }}",
'channel': "{{ channel_id }}"
});
}
message_input.value = '';
message_input.focus();
};
document.getElementById('leave').onclick = () =>{
const data = {
'username': '{{ username }}',
'channel': '{{ channel_id }}'
};
socket.emit('leave_room', data);
window.location.href = "{{ url_for('home') }}";
};
socket.on('left_room', data =>{
if (data.channel === "{{ channel_id }}"){
const inner = document.createElement('div');
inner.innerHTML = `<b>${data.username}</b> has left the room.`;
inner.style.backgroundColor = "#e1f3fb";
inner.style.fontFamily = "sans-serif";
inner.style.fontSize = "12px";
inner.style.borderColor = "#d5cec7";
inner.className = "rounded";
inner.style.display= "inline-block";
inner.style.border= '2px solid #d5cec7';
const div = document.createElement('div');
div.appendChild(inner);
div.style.width = "100%";
document.getElementById('message').appendChild(div);
}
});
socket.on('joined_room', data => {
if (data.channel === "{{ channel_id }}"){
const inner = document.createElement('div');
if (data.username !== "{{ username }}"){
console.log('not me.');
inner.innerHTML = `<b>${data.username}</b> has joined the channel!`;
} else {
console.log('me.');
inner.innerHTML = `<b>You</b> joined the channel.`;
}
inner.style.backgroundColor = "#e1f3fb";
inner.style.fontFamily = "sans-serif";
inner.style.fontSize = "12px";
inner.style.borderColor = "#d5cec7";
inner.className = "rounded";
inner.style.display= "inline-block";
inner.style.border= '2px solid #d5cec7';
const div = document.createElement('div');
div.appendChild(inner);
div.style.width = "100%";
document.getElementById('message').appendChild(div);
}
});
socket.on('announce message', data => {
console.log(data.channel);
console.log("{{ channel_id }}");
if (data.channel === "{{ channel_id }}") {
const inner = document.createElement('div');
const div = document.createElement('div');
inner.innerHTML = `${data.username}: ${data.message}`;
inner.style.fontFamily = "sans-serif";
inner.style.fontSize = "12px";
inner.style.borderColor = "#d5cec7";
inner.className = "rounded";
inner.style.display = "inline-block";
inner.style.border = '2px solid #d5cec7';
if (data.username === "{{username}}") {
inner.style.backgroundColor = "#dcf8c7";
div.style.textAlign = "right";
} else {
inner.style.backgroundColor = "#ffffff";
div.style.textAlign = "left";
}
div.appendChild(inner);
div.style.width = "100%";
document.getElementById('message').appendChild(div);
}
});
});
</script>
<style>
body{
font-family: Arial, sans-serif;
}
div{
padding: 2px 12px;
text-align: center;
}
</style>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css">
<title>Messages on Channel {{ channel_id }}</title>
</head>
<body>
<h1>Welcome to Channel {{ channel_id }}</h1>
<button id="leave">Leave Channel</button>
<label for="textbox"></label><input id="textbox" placeholder="Message..." type="text">
<button id="send">Send</button>
<hr>
<div id="message">
</div>
</body>
</html>
有人能帮忙吗？
错误信息：
127.0.0.1 - - [11/Jul/2020 14:22:35] "GET /create?channel_name=Hi HTTP/1.1" 500 -
Traceback (most recent call last):
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 2464, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask_socketio/__init__.py", line 46, in __call__
start_response)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/engineio/middleware.py", line 74, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/Users/scythia/Desktop/Project2/application.py", line 33, in make_channel
flash("Channel created!")
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/helpers.py", line 423, in flash
session["_flashes"] = flashes
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/werkzeug/local.py", line 350, in __setitem__
self._get_current_object()[key] = value
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/sessions.py", line 103, in _fail
"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.
编辑
您是否尝试按照 Flask-SocketIO docs 中的说明将 app.run(debug=True) 更改为 socketio.run(app, debug=True)？
from flask import Flask, render_template
from flask_socketio import SocketIO
app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO(app)
if __name__ == '__main__':
socketio.run(app)
未测试。
原回答
这是来自 Flask docs 的片段：
from flask import Flask, session, redirect, url_for, request
from markupsafe import escape
app = Flask(__name__)
# Set the secret key to some random bytes. Keep this really secret!
app.secret_key = b'_5#y2L"F4Q8z\n\xec]/'
所以你应该把app.config["SECRET_KEY"] = os.getenv("SECRET_KEY")改成app.secret_key = os.getenv("SECRET_KEY").
https://flask-socketio.readthedocs.io/en/latest/#initialization
不需要改变你的code.In你的命令提示符，在设置环境（如果你正在使用）和其他东西之后，写这个；
设置 SECRET_KEY=你的密钥
在“您的密钥”的位置设置一些字符串作为您的密钥。
检查您是否安装了 python-dotenv，如果您的 .env 文件没有自动加载（使用 python-dotenv），您将永远无法获得具有 os.getenv() 功能的环境变量
在此之前，您可以手动设置app.secret_key = 'xxx'看看是否是我上面提到的问题。
我正在使用 Flask/Socketio/Javascript 制作一个聊天应用程序，当我设计“创建频道”功能时，当应用程序 运行 它说 RuntimeError: The session is unavailable because no secret key was set. Set the secret_key on the application to something unique and secret. .
我看过其他与“密钥”相关的主题，但首先：我没有将 secret_key 声明放在奇怪的地方，其次：我记得添加 app.config['SESSION_TYPE']，因为这是我上次绊倒的地方。
我认为问题与 flash 函数有关，因为当我删除它时，一切正常。有什么方法可以让我闪烁一条消息但不会收到错误消息吗？
我的代码：
application.py
import os
import requests
from flask import Flask, jsonify, render_template, request, redirect, url_for, flash
from flask_socketio import SocketIO, emit, join_room, leave_room
app = Flask(__name__)
app.config["SECRET_KEY"] = os.getenv("SECRET_KEY")
app.config['SESSION_TYPE'] = 'filesystem'
app.config['SESSION_PERMANENT']= False
socketio = SocketIO(app)
channels = {"1":0,"2":0,"3":0}
@app.route("/")
def home():
return render_template('home.html', channels = channels)
@app.route("/chat")
def chat():
username = request.args.get('username')
channel_id = request.args.get("channel_id")
if username and channel_id:
channels[channel_id] +=1
return render_template("index.html", username=username, channel_id=channel_id)
print("Wait")
return redirect(url_for('home'))
@app.route("/create")
def make_channel():
channel_name = request.args.get("channel_name")
if channel_name and not str.isspace(channel_name):
channels[channel_name] = 0
flash("Channel created!")
return redirect(url_for('home'))
flash('You have not filled in the channel name!')
return render_template('home.html', channels=channels)
@socketio.on('join_room')
def join_room_event(data):
app.logger.info("{} has joined channel {}. ".format(data['username'], data['channel']))
join_room(data['channel'])
socketio.emit('joined_room', data)
@socketio.on('leave_room')
def leave_room_event(data):
app.logger.info("{} has left channel {}.".format(data['username'], data['channel']))
leave_room(data['channel'])
socketio.emit('left_room', data)
channel_id = data['channel']
channels[channel_id] -= 1
@socketio.on("send")
def vote(data):
emit("announce message", data, broadcast=True)
if __name__ == '__main__':
app.run(debug=True)
home.html
<!DOCTYPE HTML>
<html>
<head>
<title>Hello, world!</title>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
{% if message != () %}
<h4 class="text-danger">{{ message }}</h4>
{% endif %}
<form action="{{ url_for('chat') }}">
<div>
<label>Enter your name:</label>
<label>
<input type="text" name="username">
</label>
</div>
<div>
<label>Enter Channel ID:</label>
<select name="channel_id">
{% for channel in channels %}
<option value="{{ channel }}">{{ channel }} --- {{ channels[channel] }} users online</option>
{% endfor %}
</select>
</div>
<button type="submit">Enter Room</button>
</form>
<form action="{{ url_for('make_channel') }}">
<label>Enter Channel Name:</label>
<label>
<input type="text" name="channel_name">
</label>
<button type="submit">Create Channel</button>
</form>
<script>
document.addEventListener('DOMContentLoaded')
</script>
</body>
</html>
index.html
注意：我知道我不应该将 javascript 和 HTML 放在同一个文件中，所以不要谈论那个。
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://cdn.jsdelivr.net/npm/handlebars@latest/dist/handlebars.js"></script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/socket.io/1.3.6/socket.io.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', () => {
// Connect to websocket
var socket = io.connect(location.protocol + '//' + document.domain + ':' + location.port);
socket.on('connect', () => {
socket.emit('join_room', {
'username': "{{ username }}",
'channel': '{{ channel_id }}'
})
});
// The button should emit the value of the textbox
document.getElementById('send').onclick = e => {
e.preventDefault();
let message_input = document.getElementById('textbox');
const message = message_input.value.trim();
if(message.length){
socket.emit('send', {
'message': message,
'username': "{{ username }}",
'channel': "{{ channel_id }}"
});
}
message_input.value = '';
message_input.focus();
};
document.getElementById('leave').onclick = () =>{
const data = {
'username': '{{ username }}',
'channel': '{{ channel_id }}'
};
socket.emit('leave_room', data);
window.location.href = "{{ url_for('home') }}";
};
socket.on('left_room', data =>{
if (data.channel === "{{ channel_id }}"){
const inner = document.createElement('div');
inner.innerHTML = `<b>${data.username}</b> has left the room.`;
inner.style.backgroundColor = "#e1f3fb";
inner.style.fontFamily = "sans-serif";
inner.style.fontSize = "12px";
inner.style.borderColor = "#d5cec7";
inner.className = "rounded";
inner.style.display= "inline-block";
inner.style.border= '2px solid #d5cec7';
const div = document.createElement('div');
div.appendChild(inner);
div.style.width = "100%";
document.getElementById('message').appendChild(div);
}
});
socket.on('joined_room', data => {
if (data.channel === "{{ channel_id }}"){
const inner = document.createElement('div');
if (data.username !== "{{ username }}"){
console.log('not me.');
inner.innerHTML = `<b>${data.username}</b> has joined the channel!`;
} else {
console.log('me.');
inner.innerHTML = `<b>You</b> joined the channel.`;
}
inner.style.backgroundColor = "#e1f3fb";
inner.style.fontFamily = "sans-serif";
inner.style.fontSize = "12px";
inner.style.borderColor = "#d5cec7";
inner.className = "rounded";
inner.style.display= "inline-block";
inner.style.border= '2px solid #d5cec7';
const div = document.createElement('div');
div.appendChild(inner);
div.style.width = "100%";
document.getElementById('message').appendChild(div);
}
});
socket.on('announce message', data => {
console.log(data.channel);
console.log("{{ channel_id }}");
if (data.channel === "{{ channel_id }}") {
const inner = document.createElement('div');
const div = document.createElement('div');
inner.innerHTML = `${data.username}: ${data.message}`;
inner.style.fontFamily = "sans-serif";
inner.style.fontSize = "12px";
inner.style.borderColor = "#d5cec7";
inner.className = "rounded";
inner.style.display = "inline-block";
inner.style.border = '2px solid #d5cec7';
if (data.username === "{{username}}") {
inner.style.backgroundColor = "#dcf8c7";
div.style.textAlign = "right";
} else {
inner.style.backgroundColor = "#ffffff";
div.style.textAlign = "left";
}
div.appendChild(inner);
div.style.width = "100%";
document.getElementById('message').appendChild(div);
}
});
});
</script>
<style>
body{
font-family: Arial, sans-serif;
}
div{
padding: 2px 12px;
text-align: center;
}
</style>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css">
<title>Messages on Channel {{ channel_id }}</title>
</head>
<body>
<h1>Welcome to Channel {{ channel_id }}</h1>
<button id="leave">Leave Channel</button>
<label for="textbox"></label><input id="textbox" placeholder="Message..." type="text">
<button id="send">Send</button>
<hr>
<div id="message">
</div>
</body>
</html>
有人能帮忙吗？ 错误信息：
127.0.0.1 - - [11/Jul/2020 14:22:35] "GET /create?channel_name=Hi HTTP/1.1" 500 -
Traceback (most recent call last):
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 2464, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask_socketio/__init__.py", line 46, in __call__
start_response)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/engineio/middleware.py", line 74, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/Users/scythia/Desktop/Project2/application.py", line 33, in make_channel
flash("Channel created!")
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/helpers.py", line 423, in flash
session["_flashes"] = flashes
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/werkzeug/local.py", line 350, in __setitem__
self._get_current_object()[key] = value
File "/Users/scythia/Desktop/Project2/venv/lib/python3.7/site-packages/flask/sessions.py", line 103, in _fail
"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.
编辑
您是否尝试按照 Flask-SocketIO docs 中的说明将 app.run(debug=True) 更改为 socketio.run(app, debug=True)？
from flask import Flask, render_template from flask_socketio import SocketIO app = Flask(__name__) app.config['SECRET_KEY'] = 'secret!' socketio = SocketIO(app) if __name__ == '__main__': socketio.run(app)
未测试。
原回答
这是来自 Flask docs 的片段：
from flask import Flask, session, redirect, url_for, request from markupsafe import escape app = Flask(__name__) # Set the secret key to some random bytes. Keep this really secret! app.secret_key = b'_5#y2L"F4Q8z\n\xec]/'
所以你应该把app.config["SECRET_KEY"] = os.getenv("SECRET_KEY")改成app.secret_key = os.getenv("SECRET_KEY").
https://flask-socketio.readthedocs.io/en/latest/#initialization
不需要改变你的code.In你的命令提示符，在设置环境（如果你正在使用）和其他东西之后，写这个； 设置 SECRET_KEY=你的密钥 在“您的密钥”的位置设置一些字符串作为您的密钥。
检查您是否安装了 python-dotenv，如果您的 .env 文件没有自动加载（使用 python-dotenv），您将永远无法获得具有 os.getenv() 功能的环境变量
在此之前，您可以手动设置app.secret_key = 'xxx'看看是否是我上面提到的问题。