Django 的 mongodb 支持库 djongo 会自动关闭数据库

我使用MongoDB作为Django的数据库，使用djongo进行操作，它似乎会自动关闭连接，并且无法恢复。例如，我创建了一个简单的视图来显示所有记录，如前所述：

book_res = Book.object.all()
...
return Response(res)

它会在我第一次访问视图的 url 地址时起作用，如果我刷新页面或重定向到相同的 url，系统将崩溃并显示错误消息“关闭后无法使用 mongoclient”，这会导致模棱两可的错误“ django.db.utils.DatabseError"

这是完整的回溯错误，顺便说一下，这个网址在我第一次得到它时会起作用，刷新时会发生这个错误

Traceback (most recent call last):
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\sql2mongo\query.py", line 808, in __iter__
    yield from iter(self._query)
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\sql2mongo\query.py", line 166, in __iter__
    for doc in cursor:
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\cursor.py", line 1248, in next
    if len(self.__data) or self._refresh():
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\cursor.py", line 1165, in _refresh
    self.__send_message(q)
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\cursor.py", line 1052, in __send_message
    response = client._run_operation(
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\mongo_client.py", line 1267, in _run_operation
    return self._retryable_read(
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\mongo_client.py", line 1364, in _retryable_read
    server = self._select_server(read_pref, session, address=address)
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\mongo_client.py", line 1186, in _select_server
    topology = self._get_topology()
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\mongo_client.py", line 1143, in _get_topology
    self._topology.open()
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\topology.py", line 188, in open
    self._ensure_opened()
  File "C:\Program Files (x86)\Python38\lib\site-packages\pymongo\topology.py", line 573, in _ensure_opened
    raise InvalidOperation("Cannot use MongoClient after close")

The above exception (Cannot use MongoClient after close) was the direct cause of the following exception:
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\cursor.py", line 65, in fetchmany
    ret.append(self.result.next())
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\sql2mongo\query.py", line 797, in __next__
    result = next(self._result_generator)
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\sql2mongo\query.py", line 830, in __iter__
    raise exe from e

The above exception (

    Keyword: FAILED SQL: SELECT "ey_io_compname"."ey_inputName", "ey_io_compname"."ey_outputName" FROM "ey_io_compname" WHERE "ey_io_compname"."ey_inputName" = %(0)s LIMIT 21
Params: ('上海伟仕佳杰科技有限公司',)
Version: 1.3.6
    Sub SQL: None
    FAILED SQL: None
    Params: None
    Version: None) was the direct cause of the following exception:
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\utils.py", line 98, in inner
    return func(*args, **kwargs)
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\cursor.py", line 70, in fetchmany
    raise db_exe from e

The above exception () was the direct cause of the following exception:
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\core\handlers\exception.py", line 55, in inner
    response = get_response(request)
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\core\handlers\base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\views\generic\base.py", line 84, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\Program Files (x86)\Python38\lib\site-packages\rest_framework\views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "C:\Program Files (x86)\Python38\lib\site-packages\rest_framework\views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "C:\Program Files (x86)\Python38\lib\site-packages\rest_framework\views.py", line 480, in raise_uncaught_exception
    raise exc
  File "C:\Program Files (x86)\Python38\lib\site-packages\rest_framework\views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "C:\Trigger\project\EBISre\apis\views.py", line 62, in get
    print(data_ormio)
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\query.py", line 296, in __repr__
    data = list(self[: REPR_OUTPUT_SIZE + 1])
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\query.py", line 302, in __len__
    self._fetch_all()
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\query.py", line 1507, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\query.py", line 130, in __iter__
    for row in compiler.results_iter(
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\sql\compiler.py", line 1312, in results_iter
    results = self.execute_sql(
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\sql\compiler.py", line 1394, in execute_sql
    return list(result)
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\sql\compiler.py", line 1873, in cursor_iter
    for rows in iter((lambda: cursor.fetchmany(itersize)), sentinel):
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\models\sql\compiler.py", line 1873, in 
    for rows in iter((lambda: cursor.fetchmany(itersize)), sentinel):
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\utils.py", line 98, in inner
    return func(*args, **kwargs)
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\utils.py", line 91, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "C:\Program Files (x86)\Python38\lib\site-packages\django\db\utils.py", line 98, in inner
    return func(*args, **kwargs)
  File "C:\Program Files (x86)\Python38\lib\site-packages\djongo\cursor.py", line 70, in fetchmany
    raise db_exe from e

Exception Type: DatabaseError at /api/verifyCompanyRes/
Exception Value: