Question

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

在此之后，我试图通过str_title = driver.find_element_by_id("banner-section-title")获取带有id的元素。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，你必须确定你正在寻找的'id'。您发布的错误似乎找不到该元素。

所以你也可以尝试使用

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，如果有一个按钮，你可以添加.send_keys（Keys.RETURN）（这是我登录表单的例子）

    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)

我希望这可以帮助

find_element_by_id无法找到元素

1 个答案: