在 Selenium 中使用等待元素可点击方法的随机错误 [英] Random errors using wait for element clickable method in Selenium

问题描述

我有一个自定义的等待方法定义为:

I have a custom wait method defined as:

public IWebElement WaitForElementClickable(IWebDriver _driver, By elementName)
{
    var wait = new WebDriverWait(_driver, TimeSpan.FromSeconds(20));
    return wait.Until(SeleniumExtras.WaitHelpers.ExpectedConditions.ElementToBeClickable(elementName))    

}

我有一个地方可以让我点击一个按钮并加载一个新页面，它停留在正在加载"状态.几秒钟(2-3 秒)，然后我想在加载后单击其他内容....

I have one place where I click on a button and a new page loads, it sticks on "loading" for a few seconds (2-3 secs) and then I want to click on something else once it loads....

        public void enterSearchInfo()
        {

            //Thread.Sleep(2000);
            IWebElement selectElement = utility.WaitForElementClickable(_driver, element);
            selectElement.Click();
        }

即使我将等待方法设置为 20 秒，这也只能在 10 次中起作用 5 次，另外 5 次我收到以下错误...

Even though I have the wait method set to 20 secs this only works 5 times out of 10, the other 5 times I get the following error...

OpenQA.Selenium.ElementClickInterceptedException: element click intercepted:

当我取消注释 Thread.Sleep(2000) 时，它可以运行 10 次 10 次

When I uncomment Thread.Sleep(2000) it works 10 out of 10 times

有没有比 wait for element clickable 方法更好的方法来处理这个问题?我宁愿不在我的代码中硬编码睡眠等待.

Is there a better way to handle this than the wait for element clickable method? I'd rather not be hardcoding sleep waits in my code.

推荐答案

这是我在我创建的框架中使用的.它吃掉 ElementClickInterceptedException 和 StaleElementReferenceException 并一直尝试直到超时或成功.它摆脱了很多问题，比如你所说的.还有其他特定于每个页面的方法，但我发现这在大量场景中非常有效.

This is what I use in a framework I've created. It eats ElementClickInterceptedException and StaleElementReferenceException and keeps trying until the timeout or success. It got rid of a lot of issues like what you are talking about. There are other ways to do it specific to each page but I found that this works really well in a large number of scenarios.

/// <summary>
/// Clicks on an element
/// </summary>
/// <param name="locator">The locator used to find the element.</param>
/// <param name="timeOut">[Optional] How long to wait for the element (in seconds). The default timeOut is 10s.</param>
public void Click(By locator, int timeOut = 10)
{
    DateTime now = DateTime.Now;
    while (DateTime.Now < now.AddSeconds(timeOut))
    {
        try
        {
            new WebDriverWait(Driver, TimeSpan.FromSeconds(timeOut)).Until(ExpectedConditions.ElementToBeClickable(locator)).Click();

            return;
        }

        catch (ElementClickInterceptedException)
        {
            // do nothing, loop again
        }
        catch (StaleElementReferenceException)
        {
            // do nothing, loop again
        }
    }

    throw new Exception($"Unable to click element <{locator}> within {timeOut}s.");
}

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