TypeError：類型為'JsonResponse'的對象在返回json值時(shí)沒有l(wèi)en（）。但是print（dicts）和print（json.dumps（dicts）），它顯示了值，但是當(dāng)返回JsonResponse（json.dumps（dicts），safe=False）顯示一個(gè)錯(cuò)誤，如“TypeError：'JsonResponse'類型的對象沒有l(wèi)en（）'，如何解決這個(gè)問題。錯(cuò)誤Internal Server Error: /api/v2/usernewslist/Traceback (most recent call last):File "C:\duklr\Duklr-web\venv\lib\site- packages\django\core\handlers\exception.py", line 41, in innerresponse = get_response(request)File "C:\duklr\Duklr-web\venv\lib\site- packages\django\core\handlers\base.py", line 187, in _get_responseresponse = self.process_exception_by_middleware(e, request)File "C:\duklr\Duklr-web\venv\lib\site- packages\django\core\handlers\base.py", line 185, in _get_responseresponse = wrapped_callback(request, *callback_args, **callback_kwargs)File "C:\duklr\Duklr-web\venv\lib\site- packages\django\views\decorators\csrf.py", line 58, in wrapped_viewreturn view_func(*args, **kwargs)File "C:\duklr\Duklr-web\venv\lib\site-packages\rest_framework\viewsets.py", line 116, in viewreturn self.dispatch(request, *args, **kwargs)File "C:\duklr\Duklr-web\venv\lib\site-packages\rest_framework\views.py", line 495, in dispatchresponse = self.handle_exception(exc)File "C:\duklr\Duklr-web\venv\lib\site-packages\rest_framework\views.py",  line 455, in handle_exceptionself.raise_uncaught_exception(exc) File "C:\duklr\Duklr-web\venv\lib\site-packages\rest_framework\views.py",  line 492, in dispatchresponse = handler(request, *args, **kwargs) File "C:\duklr\Duklr-web\venv\lib\site-packages\rest_framework\mixins.py", line 42, in list