find_element_by_id 无法定位元素

Question

我正在使用 Selenium Python 并使用以下命令创建了一个 Web 驱动程序实例 driver = webdriver.Firefox() 并且正确创建了 Web 驱动程序实例。

在此之后，我试图通过以下方式获取具有 id 的元素：str_title = driver.find_element_by_id("banner-section-title")。但我收到以下错误：

NoSuchElementException: Message: Unable to locate element: {"method":"id","selector":"banner-section-title"}
Stacktrace:
    at FirefoxDriver.prototype.findElementInternal_ (file:///tmp/tmpR0IR8T/extensions/fxdriver@googlecode.com/components/driver-component.js:10299)
    at FirefoxDriver.prototype.findElement (file:///tmp/tmpR0IR8T/extensions/fxdriver@googlecode.com/components/driver-component.js:10308)
    at DelayedCommand.prototype.executeInternal_/h (file:///tmp/tmpR0IR8T/extensions/fxdriver@googlecode.com/components/command-processor.js:12282)
    at DelayedCommand.prototype.executeInternal_ (file:///tmp/tmpR0IR8T/extensions/fxdriver@googlecode.com/components/command-processor.js:12287)
    at DelayedCommand.prototype.execute/< (file:///tmp/tmpR0IR8T/extensions/fxdriver@googlecode.com/components/command-processor.js:12229)

Answer 1

首先，您必须确定要查找的 'id'。根据您发布的错误，似乎找不到该元素。

所以您也可以尝试使用

driver.implicitly_wait(<seconds>)

或

WebDriverWait(self.driver, 10).until(lambda s: s.find_element_by_id(<element>).is_displayed())

试试这个来自 selenium.webdriver.support.ui 导入 WebDriverWait 来自 selenium.webdriver.common.keys 导入密钥

page="www.yourwebsite.com"
self.driver = webdriver.Firefox()
driver = self.driver
driver.get(page)
buffer = self.driver.find_element_by_id("foo")

然后，如果有按钮，您可以添加 .send_keys(Keys.RETURN)（这是我的登录表单示例）

    from selenium.webdriver.support.ui import WebDriverWait
    from selenium.webdriver.common.keys import Keys

    username="myUserName"
    password="myPassword"
    WebDriverWait(self.driver, 10).until(lambda s: s.find_element_by_id("username").is_displayed()
    textUserName = self.driver.find_element_by_id("username")
    textUserName.send_keys(userName)
    WebDriverWait(self.driver, 10).until(lambda s: s.find_element_by_id("password").is_displayed()
    textPassword = self.driver.find_element_by_id("password")
    textPassword.clear()
    textPassword.send_keys(password)
    btnLogin =  self.driver.find_element_by_xpath("//input[@value='Login']")
    btnLogin.send_keys(Keys.RETURN)

希望对您有所帮助

find_element_by_id 无法定位元素

find_element_by_id is not able to locate the elements

python

selenium-webdriver

robotframework

selenium-firefoxdriver