Selenium C#正在等待页面加载-ExponptedJavaScripTerram

Question

/// <summary>
/// Ceka dokud neni stranka nastena
/// </summary>
public static void WaitForPageToLoad()
{
  try
  {
    Thread.Sleep(500);
    Log.Trace("Browser.WaitForPageToLoad() - Ceka dokud neni stranka nactena ...");
    new WebDriverWait(Browser.Driver, new TimeSpan(0, 0, 360)).Until(d => ((IJavaScriptExecutor)d).ExecuteScript("return document.readyState").Equals("complete"));
    Thread.Sleep(1000);
  }
  catch (Exception ex)
  {
    Log.Error(ex);
    throw;
  }
}

    2018-01-04 15:39:27.2266 - ERROR: System.InvalidOperationException: JavaScript error (UnexpectedJavaScriptError)
   at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
   at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
   at OpenQA.Selenium.Remote.RemoteWebDriver.ExecuteScriptCommand(String script, String commandName, Object[] args)
   at OpenQA.Selenium.Remote.RemoteWebDriver.ExecuteScript(String script, Object[] args)
   at BaseFramework.Browser.<>c.<WaitForPageToLoad>b__10_0(IWebDriver d) in C:\TFS\PRIVPMT\Selenium\BaseFramework\Browser.cs:line 97
   at OpenQA.Selenium.Support.UI.DefaultWait`1.Until[TResult](Func`2 condition)
   at BaseFramework.Browser.WaitForPageToLoad() in C:\TFS\PRIVPMT\Selenium\BaseFramework\Browser.cs:line 97
EXCEPTION: System.InvalidOperationException: JavaScript error (UnexpectedJavaScriptError)
   at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
   at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
   at OpenQA.Selenium.Remote.RemoteWebDriver.ExecuteScriptCommand(String script, String commandName, Object[] args)
   at OpenQA.Selenium.Remote.RemoteWebDriver.ExecuteScript(String script, Object[] args)
   at BaseFramework.Browser.<>c.<WaitForPageToLoad>b__10_0(IWebDriver d) in C:\TFS\PRIVPMT\Selenium\BaseFramework\Browser.cs:line 97
   at OpenQA.Selenium.Support.UI.DefaultWait`1.Until[TResult](Func`2 condition)
   at BaseFramework.Browser.WaitForPageToLoad() in C:\TFS\PRIVPMT\Selenium\BaseFramework\Browser.cs:line 103
   at Gamma.Tests.GammaICRM.AT82688_ICRM_SMOKE() in C:\TFS\PRIVPMT\Selenium\Gamma.UI.Tests\Gamma.Tests\GammaICRM.cs:line 72
   at Gamma.Tests.GammaICRM.AT82688_ICRM_SMOKE_PerformTest() in C:\TFS\PRIVPMT\Selenium\Gamma.UI.Tests\Gamma.Tests\GammaICRM.cs:line 23

下一个方法是：

public static void LeftClick(this IWebElement element)
    {
      //pockame dokud nelze na element kliknout
      new WebDriverWait(Browser.Driver, new TimeSpan(0, 0, 120)).Until(ExpectedConditions.ElementToBeClickable(element));

      Actions actions = new Actions(Browser.Driver);
      //posuneme cursor na element
      actions.MoveToElement(element).Perform();
      //klikeneme na element
      actions.Click().Build().Perform();
    }

通过的webElement是由XPath创建的（webElement总是正确的）

Answer 1

您可以尝试调用WebDriverWait类。您可以使用它来等待一个元素出现在页面上（即，如果该对象存在，页面将被加载）

public static IWebElement WaitUntilElementExists(By elementLocator, int timeout = 10)
{
    try
    {
        var wait = new WebDriverWait(Driver, TimeSpan.FromSeconds(timeout));
        return wait.Until(ExpectedConditions.ElementExists(elementLocator));
    }
    catch (NoSuchElementException)
    {
        Console.WriteLine("Element with locator: '" + elementLocator + "' was not found in current context page.");
        throw;
    }
}

在这段代码中，方法返回wait.，在此之前，应该在页面上的元素的elementexists条件。只要让它尝试在页面上找到一个当页面加载时应该在那里的元素就可以了。如果它在一定时间内不存在，它将给出NoSuchElementException（因此是超时）。抓住这个并给出自己的输出

来源：如何让webDriver等待页面加载(C#Selenium项目）