Question

示例代码：

public void submitFocusAreaRect(final Camera.Area focusArea)
  {
    if (mCameraParameters.getMaxNumFocusAreas() == 0) { return; }

    // Submit focus area to camera
    ArrayList<Camera.Area> focusAreas = new ArrayList<Camera.Area>();
    //focusAreas.add(focusArea);
    focusAreas.add(new Camera.Area(new Rect(0, -1000, 1000, 1000), 1000));

    mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
    mCameraParameters.setFocusAreas(focusAreas);
    mCamera.setParameters(mCameraParameters);

    // Start the autofocus operation
    mCamera.autoFocus(new Camera.AutoFocusCallback() {
      @Override
      public void onAutoFocus(boolean success, Camera camera) {
        mCamera.cancelAutoFocus();
      }
    });
  }

返回以下异常：

from selenium import webdriver

browser = webdriver.Chrome() 
browser.minimize_window()

添加行

  File "myScript.py", line 4, in <module>
    browser.minimize_window()
  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 738, in minimize_window
    self.execute(Command.MINIMIZE_WINDOW)
  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 312, in execute
    self.error_handler.check_response(response)
  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 208, in check_response
    raise exception_class(value)
selenium.common.exceptions.WebDriverException: Message: unknown command: session/8252be05ea571a2c623450db8ba097c0/window/minimize

表明print dir(browser)是浏览器列出的功能。那有什么呢？此功能是否仅与Chrome不兼容？

Python 2.7

Answer 1

此错误消息...

selenium.common.exceptions.WebDriverException: Message: unknown command: session/8252be05ea571a2c623450db8ba097c0/window/minimize

...表示未重新调用 minimize_window（）函数的调用。

您发现它是正确的。由于现在 WebDriver规范是 W3C建议，用于最大化的功能定义根据 W3C推荐规范进行了调整>如下：

def maximize_window(self):
    """
    Maximizes the current window that webdriver is using
    """
    params = None
    command = Command.W3C_MAXIMIZE_WINDOW
    if not self.w3c:
        command = Command.MAXIMIZE_WINDOW
        params = {'windowHandle': 'current'}
    self.execute(command, params)

但是，最小化窗口的功能定义仍在 Python客户端中与 W3C 兼容，这仍然定义为：

def minimize_window(self):
    """
    Invokes the window manager-specific 'minimize' operation
    """
    self.execute(Command.MINIMIZE_WINDOW)

因此您会看到错误 unknown command: session/8252be05ea571a2c623450db8ba097c0/window/minimize

Answer 2

只需尝试将我的chromedriver版本降级到2.25并得到...

selenium.common.exceptions.WebDriverException：消息：未知命令：session / f35727d2129895c35b24deeb7090eb26 / window / minimize

具有相同的代码。

但是如果使用最后一个（2.43），它就可以正常工作

因此，只需升级到最新的chromedriver版本即可使用minimize_window方法

获取“未知命令”异常调用“ minimize_window”方法

2 个答案: