一尘不染

Selenium单击一次,但单击一次将返回StaleElementReferenceException

selenium

import sys
import urllib2
import time
from bs4 import BeautifulSoup
from selenium import webdriver
import string
import re

reload(sys)
sys.setdefaultencoding('utf8')

baseUrl = 'https://www.breastsurgeons.org/new_layout/membership/membersearch/index.php'

driver = webdriver.Chrome('/usr/local/Cellar/chromedriver/2.36/bin/chromedriver')
driver.get(baseUrl)
time.sleep(20)

for p in range(1,282):

    driver.find_element_by_xpath("//a[contains(text(),'>>')]").click()
    time.sleep(2)

driver.quit()

打开baseUrl后,我手动单击同意,然后搜索要显示的医生列表。我想翻阅清单。现在,Selenium仅通过找到“

”来第一次单击。之后它停止并给出以下错误。

   driver.find_element_by_xpath("//a[contains(text(),'>>')]").click()


  File "/Library/Python/2.7/site-packages/selenium-3.11.0-py2.7.egg/selenium/webdriver/remote/webelement.py", line 80, in click


    self._execute(Command.CLICK_ELEMENT)


  File "/Library/Python/2.7/site-packages/selenium-3.11.0-py2.7.egg/selenium/webdriver/remote/webelement.py", line 628, in _execute


    return self._parent.execute(command, params)


  File "/Library/Python/2.7/site-packages/selenium-3.11.0-py2.7.egg/selenium/webdriver/remote/webdriver.py", line 312, in execute


    self.error_handler.check_response(response)


  File "/Library/Python/2.7/site-packages/selenium-3.11.0-py2.7.egg/selenium/webdriver/remote/errorhandler.py", line 242, in check_response


    raise exception_class(message, screen, stacktrace)


selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document

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2020-06-26

共1个答案

一尘不染

错误说明了一切:

selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document

for()循环内的程序中,您将在页面上找到<a>文本标记为 > >*的tag元素并进行调用,click()并且由于 HTML DOM
发生更改而导致该click()事件。当您的程序第二次迭代循环时,也许未加载标识为的 WebElement ,但是 Selenium
尝试引用以前已经 过时的 迭代中的搜索。因此,您会看到 StaleElementReferenceExceptionfor()
driver.find_element_by_xpath("//a[contains(text(),'>>')]") __
***

一种令人信服的迭代页面的方法是:

driver.find_element_by_xpath("//a[contains(text(),'>>')]").click()

可以诱导WebDriverWait在-结合expected_conditions子句设置为element_to_be_clickable
WebElement 与特定 页码 (例如 345 ,等)是 可点击 如下:

WebDriverWait(self.driver, 30).until(EC.element_to_be_clickable((By.XPATH, "//a[contains(text(),'3')]"))).click()
2020-06-26