Question

我试图单击有时具有不可见叠加层的元素，尽管我可以在浏览器本身中单击它。偶尔会抛出一个异常，说该元素无法被单击，因为它被另一个元素遮盖了。

在检查SO之后，我发现其他人声称执行javascript click（）调用而不是Seleniums实现WebElement.Click可以解决问题。所以我尝试了一下，页面刷新了，而不是被点击的元素。

public class Scraper : INotifyPropertyChanged
{

    public List<string> Matches { get; set; } = new List<string>();
    public int MatchCount { get; set; }
    public string Name { get; set; }
    public string StartUrl { get; set; }
    public string RegexPattern { get; set; }
    public By NextPageButtonSelector { get; set; }
    public int WaitTimeout { get; set; } = 20;

    public event EventHandler<Match> NewMatchFound;
    public event PropertyChangedEventHandler PropertyChanged;

    public async Task<List<Match>> ScrapeAsync(IWebDriver driver, PauseOrCancelToken pct)
    {
        var newMatches = new List<Match>();
        try
        {
            await Task.Run(async () =>
            {
                driver.Navigate().GoToUrl(StartUrl);
                do
                {
                    await pct.PauseOrCancelIfRequestedAsync();
                    var mc = Regex.Matches(driver.PageSource, RegexPattern);
                    foreach (Match m in mc)
                    {
                        if (!Matches.Contains(m.Value))
                        {
                            newMatches.Add(m);
                            Matches.Add(m.Value);
                            MatchCount++;
                            OnNewMatchFound(m);
                        }
                    }
                    var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(WaitTimeout));
                    wait.Until(ExpectedConditions.ElementToBeClickable(NextPageButtonSelector));
                    var nextPageButton = driver.FindElement(NextPageButtonSelector);
                    ((IJavaScriptExecutor)driver).ExecuteScript("arguments[0].scrollIntoView(true);", nextPageButton);
                    ((IJavaScriptExecutor)driver).ExecuteScript("arguments[0].click();", nextPageButton);
                } while (true);
            });
        }
        catch (Exception ex)
        {
            System.Diagnostics.Debug.WriteLine(ex);
        }

        return newMatches;
    }

    private void OnNewMatchFound(Match m)
    {
        if (NewMatchFound != null)
        {
            NewMatchFound(this, m);
        }
    }
}

Answer 1

我自己解决了此问题，即使我尝试单击的元素上没有可见的覆盖层，也使用javascript单击并且WebElement.Click（）无法正常工作。我的解决方案是在单击按钮之前，使用以下代码隐藏所有模糊的元素。

var obscuringElements = driver.FindElements(By.ClassName("proxy__in"));
foreach (var element in obscuringElements)
{
    ((IJavaScriptExecutor)driver).ExecuteScript("arguments[0].style.visibility='hidden'", element);
}

C＃Selenium通过IJavaScriptExecutor执行click（）导致页面刷新

1 个答案: