ElementNotVisibleException仅在虚拟显示中 [英] ElementNotVisibleException only in virtual display

问题描述

我有一个脚本，该脚本需要通过硒与网页进行交互.我需要使用某种虚拟显示器来阻止浏览器显示.

I have a script that needs to interact with a webpage via selenium. I need to use some kind of virtual display to keep the browser from showing up.

在我将Xvfb引入混合脚本之前，该脚本总体上可以很好地发挥作用.当我这样做时，我第一次真正尝试与页面进行交互.

The script as a whole works great until I introduce Xvfb into the mix. When I do that I get an ElementNotVisibleException the first time I actually try to interact with the page.

我尝试使用xvfbwrapper和pyvirtualdisplay具有相同的效果.

I've tried using xvfbwrapper and pyvirtualdisplay with the same effect.

这是无效的代码:

from xvfbwrapper import Xvfb
vdisplay = Xvfb()
vdisplay.start()
oBrowser = Browser()
oBrowser.visit(sUrl)
oBrowser.find_by_id('some_field')[0].fill(sValue)  #<--ERROR
vdisplay.stop()

这是起作用的代码(但显示浏览器):

And here is the code that does work (but displays the browser):

oBrowser = Browser()
oBrowser.visit(sUrl)
oBrowser.find_by_id('some_field')[0].fill(sValue) #<--works every time

那我如何在虚拟显示器上运行我的代码?

So how can I run my code on a virtual display?

在尝试填写字段之前，我尝试过执行time.sleep的问题，但是问题似乎与缓慢加载页面无关.有什么想法吗?

I've tried doing a time.sleep before trying to fill the field in but the problem doesn't seem to have anything to do with the page loading slowly. Any ideas?

推荐答案

这是一种替代方法，而不是直接解决方案:

This is a workaround more than a direct solution:

我替换了这一行:

oBrowser.find_by_id('some_field')[0].fill(sValue)

与此:

oBrowser.execute_script("document.getElementById('some_field').value = {}".format(sValue))

它可靠地工作.我仍然不确定为什么它不能一开始就发挥作用.

And it works reliably. I'm still not sure why it didn't just work in the first place though.

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