selenium grid运行脚本报错

hub和节点都已经正常启动,Chromedriver配置了环境变量,selenium的普通脚本启动正常,但是只要启动grid脚本就报错,请教一下啥情况


脚本
import pytest
from selenium.webdriver import DesiredCapabilities
from selenium.webdriver import Remote

class TestGrid:
def test_grid(self):
selenium_grid_url = ‘http://127.0.0.1:4444/wd/hub
capabilities = DesiredCapabilities.CHROME.copy()
capabilities[‘platform’] = “WINDOWS”
capabilities[‘version’] = “10”
driver = Remote(desired_capabilities=capabilities,
command_executor=selenium_grid_url)
driver.get(‘https://www.baidu.com’)

报错
“D:\Program Files\Python39\python.exe” D:/study/10、test/5、客户端进阶/test_demo.py
============================= test session starts =============================
platform win32 – Python 3.9.2, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: D:\study\10、test\5、客户端进阶
plugins: allure-pytest-2.8.40
collected 1 item

test_demo.py F [100%]

================================== FAILURES ===================================
_____________________________ TestGrid.test_grid ______________________________

self = <test_demo.TestGrid object at 0x000001B838D637C0>

def test_grid(self):
    selenium_grid_url = 'http://127.0.0.1:4444/wd/hub'
    capabilities = DesiredCapabilities.CHROME.copy()
    capabilities['platform'] = "WINDOWS"
    capabilities['version'] = "10"
  driver = Remote(desired_capabilities=capabilities,
                              command_executor=selenium_grid_url)

test_demo.py:11:


D:\Program Files\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py:157: in init
self.start_session(capabilities, browser_profile)
D:\Program Files\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py:252: in start_session
response = self.execute(Command.NEW_SESSION, parameters)
D:\Program Files\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py:321: in execute
self.error_handler.check_response(response)


self = <selenium.webdriver.remote.errorhandler.ErrorHandler object at 0x000001B838D9E730>
response = {‘status’: 500, ‘value’: ‘{\n “sessionId”: null,\n “status”: 13,\n “value”: {\n “class”: “org.openqa.grid.common…rg.openqa.grid.web.servlet.handler.RequestHandler.process(RequestHandler.java:111)\r\n\t… 34 more\r\n”\n }\n}’}

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.WebDriverException: Message: Error forwarding the new session cannot find : Capabilities {browserName: chrome, platform: WINDOWS, version: 10}
E Stacktrace:
E at org.openqa.grid.web.servlet.handler.RequestHandler.process (RequestHandler.java:118)
E at org.openqa.grid.web.servlet.DriverServlet.process (DriverServlet.java:85)
E at org.openqa.grid.web.servlet.DriverServlet.doPost (DriverServlet.java:69)
E at javax.servlet.http.HttpServlet.service (HttpServlet.java:707)
E at javax.servlet.http.HttpServlet.service (HttpServlet.java:790)
E at org.seleniumhq.jetty9.servlet.ServletHolder.handle (ServletHolder.java:865)
E at org.seleniumhq.jetty9.servlet.ServletHandler.doHandle (ServletHandler.java:535)
E at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle (ScopedHandler.java:146)
E at org.seleniumhq.jetty9.security.SecurityHandler.handle (SecurityHandler.java:548)
E at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle (HandlerWrapper.java:132)
E at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle (ScopedHandler.java:257)
E at org.seleniumhq.jetty9.server.session.SessionHandler.doHandle (SessionHandler.java:1595)
E at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle (ScopedHandler.java:255)
E at org.seleniumhq.jetty9.server.handler.ContextHandler.doHandle (ContextHandler.java:1340)
E at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope (ScopedHandler.java:203)
E at org.seleniumhq.jetty9.servlet.ServletHandler.doScope (ServletHandler.java:473)
E at org.seleniumhq.jetty9.server.session.SessionHandler.doScope (SessionHandler.java:1564)
E at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope (ScopedHandler.java:201)
E at org.seleniumhq.jetty9.server.handler.ContextHandler.doScope (ContextHandler.java:1242)
E at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle (ScopedHandler.java:144)
E at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle (HandlerWrapper.java:132)
E at org.seleniumhq.jetty9.server.Server.handle (Server.java:503)
E at org.seleniumhq.jetty9.server.HttpChannel.handle (HttpChannel.java:364)
E at org.seleniumhq.jetty9.server.HttpConnection.onFillable (HttpConnection.java:260)
E at org.seleniumhq.jetty9.io.AbstractConnection$ReadCallback.succeeded (AbstractConnection.java:305)
E at org.seleniumhq.jetty9.io.FillInterest.fillable (FillInterest.java:103)
E at org.seleniumhq.jetty9.io.ChannelEndPoint$2.run (ChannelEndPoint.java:118)
E at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.runTask (EatWhatYouKill.java:333)
E at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.doProduce (EatWhatYouKill.java:310)
E at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.tryProduce (EatWhatYouKill.java:168)
E at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.run (EatWhatYouKill.java:126)
E at org.seleniumhq.jetty9.util.thread.ReservedThreadExecutor$ReservedThread.run (ReservedThreadExecutor.java:366)
E at org.seleniumhq.jetty9.util.thread.QueuedThreadPool.runJob (QueuedThreadPool.java:765)
E at org.seleniumhq.jetty9.util.thread.QueuedThreadPool$2.run (QueuedThreadPool.java:683)
E at java.lang.Thread.run (None:-1)

D:\Program Files\Python39\lib\site-packages\selenium\webdriver\remote\errorhandler.py:242: WebDriverException
=========================== short test summary info ===========================
FAILED test_demo.py::TestGrid::test_grid - selenium.common.exceptions.WebDriv…
============================== 1 failed in 0.17s ==============================

Process finished with exit code 0

已经远程解决,如果再有问题,可以把问题贴到帖子

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