使用 Flask-SocketIO 5.0.1 加入房间时出现 TypeError

Question

我正在尝试使用 Flask 在 Python 中设置一个网络应用程序，为不同的用户提供多个房间，但是使用 Flask-SocketIO 提供的 join_room 并执行脚本时出现此错误返回：

Exception in thread Thread-10:
Traceback (most recent call last):
  File "D:\Python\Python39\lib\threading.py", line 954, in _bootstrap_inner
    self.run()
  File "D:\Python\Python39\lib\threading.py", line 892, in run
    self._target(*self._args, **self._kwargs)
  File "D:\Python\Python39\lib\site-packages\socketio\server.py", line 688, in _handle_event_internal
    r = server._trigger_event(data[0], namespace, sid, *data[1:])
  File "D:\Python\Python39\lib\site-packages\socketio\server.py", line 712, in _trigger_event
    return self.handlers[namespace][event](*args)
  File "D:\Python\Python39\lib\site-packages\flask_socketio\__init__.py", line 283, in _handler
    return self._handle_event(handler, message, namespace, sid,
  File "D:\Python\Python39\lib\site-packages\flask_socketio\__init__.py", line 751, in _handle_event
    ret = handler(*args)
  File "D:\master-thesis\safety-detector\server.py", line 30, in join_room
    join_room(roomId)
  File "D:\master-thesis\safety-detector\server.py", line 28, in join_room
    roomId = data['roomId']
TypeError: string indices must be integers

如果我注释掉 join_room(roomId)，camId 的分配将按预期工作，所以我不知道为什么会出现此错误。

后端代码：

@socketio.on('connect')
def connection():
    @socketio.on('join-room')
    def join_room(data):
        roomId = data['roomId']
        camId = data['camId']
        join_room(roomId)
        emit('cam-connected', {'camId': camId}, broadcast=True)
        @socketio.on('disconnect')
        def on_disconnect():
            leave_room(roomId)
            emit('cam-disconnected', {'camId': camId}, broadcast=True)

Answer 1

您的代码中有一个名为 join_room() 的函数，它隐藏了 Flask-SocketIO 中的 join_room() 函数。

您的 Socket.IO 处理程序的结构也很奇怪，内部函数不太可能正常工作（或者当您 copy/pasted 您问题中的代码时缩进弄乱了？ ).尝试这样的事情：

@socketio.on('connect')
def connection():
    pass

@socketio.on('join-room')
def my_join_room(data):      # <--- rename this to something other than join_room
    roomId = data['roomId']
    camId = data['camId']
    join_room(roomId)
    emit('cam-connected', {'camId': camId}, broadcast=True)

@socketio.on('disconnect')
def on_disconnect():
    leave_room(roomId)
    emit('cam-disconnected', {'camId': camId}, broadcast=True)

使用 Flask-SocketIO 5.0.1 加入房间时出现 TypeError

TypeError while joining a room with Flask-SocketIO 5.0.1

python

flask

python-3.x

socket.io

flask-socketio