在 rasa 中遇到错误运行自定义操作

Question

我最近开始研究 rasa。我的聊天机器人很简单。每当用户提出问题时，机器人都会从 sqlite3 数据库中过滤数据并 return 结果。我添加了训练示例，为流程创建了故事，并编写了一个自定义操作来从数据库中过滤数据。对于自定义操作，我指定了一个端点并启动了操作服务器。到目前为止，这是我的代码

actions.py

from typing import Any, Text, Dict, List
from rasa_core_sdk import Action, Tracker
import sqlite3

class TestAction(Action):

    def name(self) -> Text:
        return "action_testAction"

    def run(self, dispatcher, tracker, domain):

        UserId = tracker.get_slot('UserID')
        query = 'SELECT User_name FROM sales WHERE UserID=?'

        conn = sqlite3.connect("test.db")
        cursor = conn.cursor()
        cursor.execute(query, (UserId,))
        name = cursor.fetchall()

        msg = 'Hello {}!'.format(name)
        dispatcher.utter_message(msg)

endpoints.yml

action_endpoint:
  url: "http://localhost:5055/"

对于运行端点，我运行在单独的终端中输入以下代码 window

python -m rasa_sdk --actions actions

但是当我运行基于这个的rasa shell --endpoints endpoints.yml命令的程序时，我得到以下错误

rasa.core.processor  - Encountered an exception while running action 'action_testAction'. Bot will continue, but the actions events are lost. Please check the logs of your action server for more information.

这就是我的操作端点服务器 returned

127.0.0.1 - - [2019-09-09 11:07:23] "POST / HTTP/1.1" 404 342 0.005443

我不确定，我做错了什么。我检查了代码 actions.py 文件。我似乎没有在那里犯任何错误。

[编辑 1]

我在网上查找并发现了这个 tutorial。

在本教程中，端点定义为

action_endpoint:   
    url: "http://localhost:5055/webhook"

现在我对我的代码进行了同样的尝试。当我运行具有更新代码的聊天机器人时，我在 action_server

中得到以下异常

Exception: No registered Action found for name 'action_testAction'.

[编辑 2]

运行在调试模式下启用操作服务器的结果

(base) SASHAANKs-MacBook-Pro:speechbot2 sashaanksekar$ rasa run actions -vv
2019-09-09 19:38:33 INFO     rasa_sdk.endpoint  - Starting action endpoint server...
2019-09-09 19:38:38 INFO     rasa_sdk.endpoint  - Action endpoint is up and running. on ('0.0.0.0', 5055)
2019-09-09 19:39:06 DEBUG    rasa_sdk.executor  - Received request to run 'action_testAction'
2019-09-09 19:39:06 ERROR    flask.app  - Exception on /webhook [POST]
Traceback (most recent call last):
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask/app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask_cors/extension.py", line 161, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask/app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask/app.py", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/flask_cors/decorator.py", line 128, in wrapped_function
    resp = make_response(f(*args, **kwargs))
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/rasa_sdk/endpoint.py", line 59, in webhook
    response = executor.run(action_call)
  File "/Users/sashaanksekar/anaconda3/lib/python3.7/site-packages/rasa_sdk/executor.py", line 246, in run
    "No registered Action found for name '{}'.".format(action_name)
Exception: No registered Action found for name 'action_testAction'.

请帮帮我

Answer 1

您收到 Exception: No registered Action found for name 'action_testAction'. 错误的原因是您在运行操作服务器时出现第一个异常，即因为：

rasa.core.processor  - Encountered an exception while running action 'action_testAction'. Bot will continue, but the actions events are lost. Please check the logs of your action server for more information.

尝试运行 debug mode 中的操作服务器使用调试标志 -vv 就像 rasa run actions -vv 以查看代码中的问题所在。（问题可能是因为您可能没有导入 Action 或 sqlite3 或其他任何东西）。

希望对您有所帮助。

编辑：

Make sure that the name of the action file matches.

运行 rasa run actions --actions action -vv 产量

(chatbot) PS C:\Users\user\Documents\Python\rasa-test> python -m rasa_sdk --actions action -vv
2019-09-09 21:02:56 INFO     rasa_sdk.endpoint  - Starting action endpoint server... 
2019-09-09 21:02:56 INFO     rasa_sdk.executor  - Registered function for 'action_testAction'.
2019-09-09 21:02:56 INFO     rasa_sdk.endpoint  - Action endpoint is up and running. on ('0.0.0.0', 5055)

action.py

import sqlite3

from rasa_sdk import Action

class TestAction(Action):

    def name(self):
        return "action_testAction"

    def run(self, dispatcher, tracker, domain):

        UserId = tracker.get_slot('UserID')
        query = 'SELECT User_name FROM sales WHERE UserID=?'

        conn = sqlite3.connect("test.db")
        cursor = conn.cursor()
        cursor.execute(query, (UserId,))
        name = cursor.fetchall()

        msg = 'Hello {}!'.format(name)
        dispatcher.utter_message(msg)

Answer 2

我遇到了这个错误，简单的解决方案是观察 actions.py 文件下面部分中的错误和代码。

class TestAction(Action):

    def name(self) -> Text:
        return "action_testAction"

class 的名称是 'TestAction'，'name' 函数的 return 值是 'action_testAction'。所以错误是 - 您在域文件中使用的操作名称与此 class 中此 'name' 方法编辑的名称 return 不匹配。在 NLU 训练数据和域文件中使用此 'action_testAction'。

在 rasa 中遇到错误运行自定义操作

Encountering error running custom actions in rasa

python

chatbot

rasa-nlu

rasa-core

rasa

actions.py

endpoints.yml

[编辑 1]

[编辑 2]

在 rasa 中遇到错误 运行 自定义操作

Encountering error running custom actions in rasa

python

chatbot

rasa-nlu

rasa-core

rasa

actions.py

endpoints.yml

[编辑 1]

[编辑 2]

在 rasa 中遇到错误运行自定义操作