Question

每当我尝试执行以下错误时，我都会尝试使用selenium访问网站：

ElementNotVisibleException: Message: element not visible

代码如下：

from urllib import parse
from selenium import webdriver
from selenium.webdriver.support.ui import Select
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.keys import Keys

class ICAIScraper(object):
    def __init__(self):
        self.url = "https://www.icaionlineregistration.org/Admin_Module/Login.aspx"
        self.driver = webdriver.Chrome('C:\\chromedriver.exe')

    def scrape(self):
        self.driver.get(self.url)
        wait = WebDriverWait(self.driver, 10)
        wait.until(lambda driver: driver.find_element_by_id('txt_username').is_displayed() == False)
        print('Yay! on the first page')
        username = self.driver.find_element_by_id('txt_username')
        username.click()
        username.send_keys('username')
        password = self.driver.find_element_by_id('txt_password')
        password.send_keys('password')
        password.send_keys(Keys.ENTER)
        self.driver.quit()

if __name__ == '__main__':
   scraper = ICAIScraper()
   scraper.scrape()

Answer 1

编写一个简单的函数，通过id滚动到任何UI元素（或者您可以使用By类来自定义它）。通过提供元素的id属性来调用该方法将使元素成为driver的焦点。

def scroll_to_element_by_id(driver, element_id):
    driver.execute_script("return arguments[0].scrollIntoView();", driver.find_element_by_id(element_id))

示例调用：

scroll_to_element_by_id(self.driver, 'txt_password')

Answer 2

错误说明了一切：

ElementNotVisibleException: Message: element not visible

由于您尝试通过Username属性找到Password和id字段，因此字段未唯一标识。因此，我们必须采用Locator Strategy来唯一标识Username和Password字段，如下所示：

# populate the Username field
self.driver.find_element_by_xpath("//td/img[@src='../images/login_userName.png']//following::input[2]").send_keys("username")
# populate the Password field
self.driver.find_element_by_xpath("//td/img[@src='../images/login_password.png']//following::input[2]").send_keys("password")

Python：使用Selenium自动填充表单会产生错误

2 个答案: