问题描述
我正在尝试使用 Selenium for Python 和 Chrome 网络驱动程序来自动下载文件.
I am trying to use Selenium for Python eith the Chrome webdriver to automate the download of a file.
我的程序完美运行到最后一步(点击下载"按钮)，此时会触发一个带有文本的对话框:
My program works perfectly up to the last step (clicking on the 'download' button) at which point a dialog box is triggered with the text:
‘站点 url’出现错误:未捕获的 TypeError:无法读取 undefined41 的属性‘getColomnSet’"
这个错误是什么意思，最可能的原因是什么?
What does this error mean and what are the most probable causes?
作为参考，这里是我程序的最后几个命令:
For reference, here are the last few commands of my program:
try:
elem = wait.until(EC.presence_of_element_located((By.ID,'element_1_id')))
finally:
elem1 = driver.find_element_by_id('element_1_id')
elem2 = driver.find_element_by_id('element_2_id')
action = ActionChains(driver).move_to_element(elem1).move_to_element(elem2)
action.perform()
elem2.click()
推荐答案
这个错误信息...
An error has occured in 'site url': Uncaught TypeError: Cannot read property 'getColomnSet' of undefined
...暗示您的程序在尝试下载所需文件时无法读取属性getColomnSet.
...implies that your program was unable to read the property getColomnSet while trying to download the desired file.
可能，主要问题是在客户端呈现 js" rel="nofollow noreferrer">HTML DOM 完全.
Possibly, the main problem is the js involved to download the document is invoked before the client renders the HTML DOM completely.
相关的HTML、更多的之前的代码行和错误堆栈跟踪会让我们对怎么了.
The relevant HTML, a bit more of your previous lines of code and the error stack trace would have given us some more idea about what's going wrong.
- 您可以诱导一些措施等到完成 DOM 树在讨论之后呈现:
- 检查页面是否已在 Selenium 中完全加载的通用函数
- 在您的代码试验中，我没有看到您与元素
(By.ID,'element_1_id')交互，因此您可能可以删除presence_of_element_located() 的步骤对于元素(By.ID,'element_1_id'). - 如果您仍然需要
presence_of_element_located((By.ID,'element_1_id'))捕获异常并启动所需步骤. - 当您在 elem1 和 elem2 上调用
move_to_element()并继续调用perform()时，您需要用 WebDriverWait.webdriver.support.expected_conditions" rel="nofollow noreferrer">expected_conditions 作为element_to_be_clickable(locator)
- In your code trials I don't see you interacting with the element
(By.ID,'element_1_id')so possibly you can remove the step ofpresence_of_element_located()for the element(By.ID,'element_1_id'). - If you still require
presence_of_element_located((By.ID,'element_1_id'))catch the exception and initiate required steps. - As you invoke
move_to_element()over elem1 and elem2 and moving ahead invokeperform()you need to induce WebDriverWait with expected_conditions aselement_to_be_clickable(locator)
- 无法使用画布读取 null 的属性getContext"
- 未捕获的类型错误:无法读取未定义的属性getContext"
- 未捕获的错误 remote.js
这篇关于“站点 url"中发生错误:未捕获的类型错误:无法使用 Selenium 和 Python 读取未定义的属性“getColomnSet"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！