Selenium 找不到元素，即使它们存在
问题描述
我正在创建一个简单的 selenium 脚本来输入用户名和密码以登录.这是我的代码:
I'm creating a simple selenium script to enter username and password to log in. Here is my code:
driver = webdriver.Chrome(executable_path=r'C:\Users\Aspire5\Downloads\chromedriver_win32\chromedriver.exe')
driver.get("https://ven02207.service-now.com/")
username = driver.find_element_by_xpath('//*[@id="user_name"]')
username.send_keys('username')
password = driver.find_element_by_xpath('//*[@id="user_password"]')
password.send_keys('this_is_password')
但我得到以下异常:
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//*[@id="user_name"]"}
我正在通过代码访问 此 网站.我在代码中提供的 XPath 存在于页面上，但它仍然返回 No such Element Exception.
I'm accessing this website from code. The XPath I've provided in code are exists on the page, but still it's returning No Such Element Exception.
我在这里缺少什么?我看过 这个，this 对此提出疑问，但找不到确切答案.
What I'm missing here? I've seen this, this questions for this, but couldn't find exact answer.
解决方案
你需要先切换到frame..因为input标签在frame里面
you need to first switch to the frame.. since the input tag is inside the frame
frame = driver.find_element_by_xpath('//*[@id="gsft_main"]')
driver.switch_to.frame(frame)
driver.find_element_by_id('user_name').send_keys('sarthak')
driver.find_element_by_id('user_password').send_keys('sarthak')
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