Click Hidden Link Using Selenium in Python

问题

I am using Selenium in Python to try to click a link within a drop down menu that appears when the mouse hovers over that drop down menu. Here is the drop down menu info:

<div id="DownloadMenu">
    <ul id="DownloadMenu_control" class="topmenu" widgetid="DownloadMenu_control">
    <li class="horizontal-list-item-2 leftFloatedItem" id="DownloadMenu_control@BatchPrintSaveMenu_1" widgetid="DownloadMenu_control@BatchPrintSaveMenu_1" style="">
    <a class="horizontal-list-item-2 leftFloatedItem" href="javascript:void(0)">Download</a>
    <ul id="common_navigation_MenuControl_6" class="submenu" style="display: none; left: 0px; visibility: hidden;" widgetid="common_navigation_MenuControl_6">
    <li class="subitems" id="DownloadMenu_control@DownloadSelectedDocumentsMenuItem" widgetid="DownloadMenu_control@DownloadSelectedDocumentsMenuItem">
    <a href="javascript:com.reuters.rts.event(event, 'openMultiDocInfoViewerBatchViewEikon', 'itemsCollectionId', 'AllDocumentListView_items', 'researchTableManagerId', 'AllDocumentListView', 'summary', escape(encodeURIComponent(dijit.byId('advancedSearchManager').getFilterSubmittedSummary())), 'fileSizeLimitForMerging', '25','forBatchPrint','true', 'action','Save');">Documents</a>
    </li>
    </ul>
    </li>
    </ul>
</div>

I am trying to click on the "Documents" link in the "a href" tag. When I hover over the menu, the code changes as follows:

<div id="DownloadMenu">
    <ul id="DownloadMenu_control" class="topmenu" widgetid="DownloadMenu_control">
    <li class="topitemOn" id="DownloadMenu_control@BatchPrintSaveMenu_1" widgetid="DownloadMenu_control@BatchPrintSaveMenu_1" style="">
    <a class="horizontal-list-item-2 leftFloatedItem" href="javascript:void(0)">Download</a>
    <ul id="common_navigation_MenuControl_6" class="submenu" style="display: none; left: 0px;" widgetid="common_navigation_MenuControl_6">
    <li class="subitems" id="DownloadMenu_control@DownloadSelectedDocumentsMenuItem" widgetid="DownloadMenu_control@DownloadSelectedDocumentsMenuItem">
    <a href="javascript:com.reuters.rts.event(event, 'openMultiDocInfoViewerBatchViewEikon', 'itemsCollectionId', 'AllDocumentListView_items', 'researchTableManagerId', 'AllDocumentListView', 'summary', escape(encodeURIComponent(dijit.byId('advancedSearchManager').getFilterSubmittedSummary())), 'fileSizeLimitForMerging', '25','forBatchPrint','true', 'action','Save');">Documents</a>
    </li>
    </ul>
    </li>
    </ul>
</div>

You can see that the visibility:hidden part goes away in the second ul tag.

I have found the elements on the page using the following code:

download_menu = driver.find_element_by_id("DownloadMenu")
download_button = download_menu.find_elements_by_tag_name('a')[1]

If I try to click the download button using:

download_button.click()

I get an error that the element is not visible:

ElementNotVisibleException: Message: element not visible

So I tried,

ActionChains(driver).move_to_element(download_menu).move_to_element(download_button).click(download_button).perform()

When I do this, nothing happens. So, I tried executing the script to make the menu visible and then clicking and that didn't work either:

visibility_tag = download_menu.find_elements_by_tag_name('ul')[1]
driver.execute_script("arguments[0].style.display = 'block'; arguments[0].style.left = '0px'; arguments[0].style.visibility = ''", visibility_tag)

When I run the execute_script function, the menu DOES become visible on my browser. It just still can't be clicked. I'm going crazy here. Any ideas? I'm using the Chrome extension of Selenium in Python.

回答1:

You should try using ExplicitWaits to wait until Documents link visible and enable to click as below :-

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.action_chains import ActionChains

wait = WebDriverWait(driver, 10)

download_menu = driver.find_element_by_id("DownloadMenu")

action = ActionChains(driver)
#hover on download_menu first
action.move_to_element(download_menu).perform()

#now find Documents link and click
documents = wait.until(EC.element_to_be_clickable((By.LINK_TEXT, "Documents")))
documents.click()

来源：https://stackoverflow.com/questions/40474784/click-hidden-link-using-selenium-in-python

标签

python

selenium

hidden