執行UI自動化專案時，某一天瀏覽器後臺執行，程式執行到visibility_of_element_located時報錯。
阿新 • • 發佈：2021-01-05
執行UI自動化專案時，某一天瀏覽器後臺執行，程式報錯，報錯資訊如下：
self = <selenium.webdriver.remote.errorhandler.ErrorHandler object at 0x0E23FDB0> response = {'sessionId': '948dc9be0bc706782ff514b323417379', 'status': 10, 'value': {'message': 'stale element reference: element...ver info: chromedriver=2.36.540470 (e522d04694c7ebea4ba8821272dbef4f9b818c91),platform=Windows NT 10.0.17763 x86_64)'}} def check_response(self, response): """ Checks that a JSON response from the WebDriver does not have an error. :Args: - response - The JSON response from the WebDriver server as a dictionary object. :Raises: If the response contains an error message. """ status = response.get('status', None) if status is None or status == ErrorCode.SUCCESS: return value = None message = response.get("message", "") screen = response.get("screen", "") stacktrace = None if isinstance(status, int): value_json = response.get('value', None) if value_json and isinstance(value_json, basestring): import json try: value = json.loads(value_json) if len(value.keys()) == 1: value = value['value'] status = value.get('error', None) if status is None: status = value["status"] message = value["value"] if not isinstance(message, basestring): value = message message = message.get('message') else: message = value.get('message', None) except ValueError: pass exception_class = ErrorInResponseException if status in ErrorCode.NO_SUCH_ELEMENT: exception_class = NoSuchElementException elif status in ErrorCode.NO_SUCH_FRAME: exception_class = NoSuchFrameException elif status in ErrorCode.NO_SUCH_WINDOW: exception_class = NoSuchWindowException elif status in ErrorCode.STALE_ELEMENT_REFERENCE: exception_class = StaleElementReferenceException elif status in ErrorCode.ELEMENT_NOT_VISIBLE: exception_class = ElementNotVisibleException elif status in ErrorCode.INVALID_ELEMENT_STATE: exception_class = InvalidElementStateException elif status in ErrorCode.INVALID_SELECTOR \ or status in ErrorCode.INVALID_XPATH_SELECTOR \ or status in ErrorCode.INVALID_XPATH_SELECTOR_RETURN_TYPER: exception_class = InvalidSelectorException elif status in ErrorCode.ELEMENT_IS_NOT_SELECTABLE: exception_class = ElementNotSelectableException elif status in ErrorCode.ELEMENT_NOT_INTERACTABLE: exception_class = ElementNotInteractableException elif status in ErrorCode.INVALID_COOKIE_DOMAIN: exception_class = InvalidCookieDomainException elif status in ErrorCode.UNABLE_TO_SET_COOKIE: exception_class = UnableToSetCookieException elif status in ErrorCode.TIMEOUT: exception_class = TimeoutException elif status in ErrorCode.SCRIPT_TIMEOUT: exception_class = TimeoutException elif status in ErrorCode.UNKNOWN_ERROR: exception_class = WebDriverException elif status in ErrorCode.UNEXPECTED_ALERT_OPEN: exception_class = UnexpectedAlertPresentException elif status in ErrorCode.NO_ALERT_OPEN: exception_class = NoAlertPresentException elif status in ErrorCode.IME_NOT_AVAILABLE: exception_class = ImeNotAvailableException elif status in ErrorCode.IME_ENGINE_ACTIVATION_FAILED: exception_class = ImeActivationFailedException elif status in ErrorCode.MOVE_TARGET_OUT_OF_BOUNDS: exception_class = MoveTargetOutOfBoundsException elif status in ErrorCode.JAVASCRIPT_ERROR: exception_class = JavascriptException elif status in ErrorCode.SESSION_NOT_CREATED: exception_class = SessionNotCreatedException elif status in ErrorCode.INVALID_ARGUMENT: exception_class = InvalidArgumentException elif status in ErrorCode.NO_SUCH_COOKIE: exception_class = NoSuchCookieException elif status in ErrorCode.UNABLE_TO_CAPTURE_SCREEN: exception_class = ScreenshotException elif status in ErrorCode.ELEMENT_CLICK_INTERCEPTED: exception_class = ElementClickInterceptedException elif status in ErrorCode.INSECURE_CERTIFICATE: exception_class = InsecureCertificateException elif status in ErrorCode.INVALID_COORDINATES: exception_class = InvalidCoordinatesException elif status in ErrorCode.INVALID_SESSION_ID: exception_class = InvalidSessionIdException elif status in ErrorCode.UNKNOWN_METHOD: exception_class = UnknownMethodException else: exception_class = WebDriverException if value == '' or value is None: value = response['value'] if isinstance(value, basestring): if exception_class == ErrorInResponseException: raise exception_class(response, value) raise exception_class(value) if message == "" and 'message' in value: message = value['message'] screen = None if 'screen' in value: screen = value['screen'] stacktrace = None if 'stackTrace' in value and value['stackTrace']: stacktrace = [] try: for frame in value['stackTrace']: line = self._value_or_default(frame, 'lineNumber', '') file = self._value_or_default(frame, 'fileName', '<anonymous>') if line: file = "%s:%s" % (file, line) meth = self._value_or_default(frame, 'methodName', '<anonymous>') if 'className' in frame: meth = "%s.%s" % (frame['className'], meth) msg = " at %s (%s)" msg = msg % (meth, file) stacktrace.append(msg) except TypeError: pass if exception_class == ErrorInResponseException: raise exception_class(response, message) elif exception_class == UnexpectedAlertPresentException: alert_text = None if 'data' in value: alert_text = value['data'].get('text') elif 'alert' in value: alert_text = value['alert'].get('text') raise exception_class(message, screen, stacktrace, alert_text) > raise exception_class(message, screen, stacktrace) E selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document E (Session info: chrome=87.0.4280.88) E (Driver info: chromedriver=2.36.540470 (e522d04694c7ebea4ba8821272dbef4f9b818c91),platform=Windows NT 10.0.17763 x86_64) Python\lib\site-packages\selenium\webdriver\remote\errorhandler.py:242: StaleElementReferenceException
出現報錯時，並沒有改動任何程式碼就突然報錯了。所以考慮是環境問題。和元素定位有關的一個是selenium一個是瀏覽器。
pip list檢視selenium的版本並沒有改變，則考慮瀏覽器問題。突然想到前幾天升級了chrome瀏覽器，但是沒有替換對應的chromedriver.exe。替換chromedriver.exe後執行程式不會報錯。