Selenium即使从源代码中复制元素后也未发现元素异常

Question

我正在尝试简单地登录到这个页面来访问LexisNexis。下面是我的代码：

from selenium import webdriver
browser = webdriver.Firefox(executable_path='/usr/local/bin/geckodriver')
type(browser)

browser.get('https://sfx.carli.illinois.edu/sfxuiu?url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&ctx_enc=info:ofi/enc:UTF-8&ctx_ver=Z39.88-2004&rfr_id=info:sid/sfxit.com:azlist&sfx.ignore_date_threshold=1&rft.object_id=63750000000001351&svc.fulltext=yes')
linkElem2 = browser.find_element_by_link_text('LEXIS NEXIS DATABASES') 
type(linkElem2)
linkElem2.click()
alert = browser.switch_to.alert
alert.accept()

loginElem = browser.find_element_by_id('j_username')
loginElem.send_keys('username')
passElem = browser.find_element_by_id('j_password')
passElem.send_keys('password')
passElem.submit()

下面是html源代码：

div class="form_row"

label for="j_username"
Enter your strongNetID:/strong/label

input id="j_username" name="j_username" autocomplete="OFF" autocapitalize="off" autocorrect="off" value="" type="text"
/div

Answer 1

1.问题“lexis NEXIS databases”链接打开新窗口，您必须切换到它才能登录，在python中处理多个窗口：

from selenium import webdriver

browser = webdriver.Firefox(executable_path='/usr/local/bin/geckodriver')
browser.implicitly_wait(5)

browser.get('https://sfx.carli.illinois.edu/sfxuiu?url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&ctx_enc=info:ofi/enc:UTF-8&ctx_ver=Z39.88-2004&rfr_id=info:sid/sfxit.com:azlist&sfx.ignore_date_threshold=1&rft.object_id=63750000000001351&svc.fulltext=yes')
browser.find_element_by_link_text('LEXIS NEXIS DATABASES').click()

browser.close()
browser.switch_to.window(browser.window_handles[0])

browser.find_element_by_id('j_username').send_keys('username')
passElem = browser.find_element_by_id('j_password')
passElem.send_keys('password')
passElem.submit()

from selenium import webdriver

browser = webdriver.Firefox(executable_path='/usr/local/bin/geckodriver')
browser.implicitly_wait(5)

browser.get('https://compass2g.illinois.edu/webapps/login/')
browser.find_element_by_link_text('Login with your Illinois NetID').click()

browser.implicitly_wait(5)

browser.find_element_by_id('j_username').send_keys('username')
passElem = browser.find_element_by_id('j_password')
passElem.send_keys('password')
passElem.submit()