問題描述

我正在嘗試使用 Selenium for Python 和 Chrome 網絡驅動程序來自動下載文件.

I am trying to use Selenium for Python eith the Chrome webdriver to automate the download of a file.

我的程序完美運行到最后一步(點擊下載"按鈕)，此時會觸發一個帶有文本的對話框:

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:

‘站點 url’出現錯誤:未捕獲的 TypeError:無法讀取 undefined41 的屬性‘getColomnSet’"

這個錯誤是什么意思，最可能的原因是什么?

What does this error mean and what are the most probable causes?

作為參考，這里是我程序的最后幾個命令:

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()

推薦答案

這個錯誤信息...

An error has occured in 'site url': Uncaught TypeError: Cannot read property 'getColomnSet' of undefined

...暗示您的程序在嘗試下載所需文件時無法讀取屬性getColomnSet.

...implies that your program was unable to read the property getColomnSet while trying to download the desired file.

可能，主要問題是在客戶端呈現 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.

相關的HTML、更多的之前的代碼行和錯誤堆棧跟蹤會讓我們對怎么了.

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.

• 您可以誘導一些措施等到完成 DOM 樹在討論之后呈現:
  • 檢查頁面是否已在 Selenium 中完全加載的通用函數
  • 在您的代碼試驗中，我沒有看到您與元素 (By.ID,'element_1_id') 交互，因此您可能可以刪除 presence_of_element_located() 的步驟 對于元素 (By.ID,'element_1_id').
  • 如果您仍然需要 presence_of_element_located((By.ID,'element_1_id')) 捕獲異常并啟動所需步驟.
  • 當您在 elem1 和 elem2 上調用 move_to_element() 并繼續調用 perform() 時，您需要用 WebDriverWait.webdriver.support.expected_conditions" rel="nofollow noreferrer">expected_conditions 作為 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 of presence_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 invoke perform() you need to induce WebDriverWait with expected_conditions as element_to_be_clickable(locator)
  • 無法使用畫布讀取 null 的屬性getContext"
  • 未捕獲的類型錯誤:無法讀取未定義的屬性getContext"
  • 未捕獲的錯誤 remote.js

  這篇關于“站點 url"中發生錯誤:未捕獲的類型錯誤:無法使用 Selenium 和 Python 讀取未定義的屬性“getColomnSet"的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！

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