“消息=未知错误:无法聚焦元素"通过Selenium，ChromeDriver和Chrome执行测试时

问题描述

我正在尝试在Google Chrome浏览器中发送下拉列表的密钥，但是我收到此错误

I am trying to send key for a drop down list in google chrome browser but i am receiving this error

OpenQA.Selenium.WebDriverException
  HResult=0x80131500
  Message=unknown error: cannot focus element
  (Session info: chrome=68.0.3440.106)
  (Driver info: chromedriver=2.40.565498 (ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=Windows NT 10.0.17134 x86_64)
  Source=WebDriver
  StackTrace:
   at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
   at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
   at OpenQA.Selenium.Remote.RemoteWebElement.Execute(String commandToExecute, Dictionary`2 parameters)
   at OpenQA.Selenium.Remote.RemoteWebElement.SendKeys(String text)
   at BnI.UITests.Register.TheOfficialInfoValidTest() in C:\Users\me\UITests\Register.cs:line 382

这是我的方法:

driver.FindElement(By.XPath("(.//*[normalize-space(text()) and normalize-space(.)='Country:'])[1]/following::span[2]")).SendKeys("USA");

它在html中的外观:

This how its look in html :

<div _ngcontent-c4="" class="col-xs-8 no-padding-sides ng-star-inserted" style="">
   <kendo-dropdownlist _ngcontent-c4="" class="custom-dropdown k-widget k-dropdown k-header ng-pristine ng-invalid ng-touched" formcontrolname="countryId" dir="ltr">
      <span role="listbox" unselectable="on" class="k-dropdown-wrap k-state-default" id="k-d0697a91-baeb-4960-bfc1-c023903c1159" dir="ltr" readonly="false" tabindex="0" aria-disabled="false" aria-readonly="false" aria-haspopup="true" aria-expanded="false" aria-owns="dbfc0894-a4f5-4f1b-881f-1d88ccdc6002" aria-activedescendant="f65cbfa2-6280-4a84-908b-ba11da75d59d-undefined">
         <span unselectable="on" class="k-input">
            <!----><!---->Select Country ...
         </span>
         <span unselectable="on" class="k-select"><span class="k-i-arrow-s k-icon"></span></span><!---->
      </span>
      <!----><!---->
   </kendo-dropdownlist>
</div>

这是XPath:

xpath=(.//*[normalize-space(text()) and normalize-space(.)='Country:'])[1]/following::span[2]

如果我想使用Selenium IDE单击它，则dropdownlist值将如何显示，因为该值是从数据库中检索的:

This how dropdownlist value look like if i want to click on it using selenium IDE because this value is retrieved from database :

1. 首先我点击了下拉列表
2. 第二个我选择了国家

还有其他方法可以通过硒键盘代替发送键来增加价值吗?

Is there another way to add value by keyboard in selenium instead of send key ?

推荐答案

根据您共享的HTML，目标元素是< span> 标记，因此您将无法调用 SendKeys()方法.相反，您需要诱使 WebDriverWait 以便使所需元素可单击，并且可以使用以下任一解决方案:

As per the HTML you have shared the target element is a <span> tag so you won't be able to invoke SendKeys() method. Instead you need to induce WebDriverWait for the desired element to be clickable and you can use either of the following solution:

new WebDriverWait(driver, TimeSpan.FromSeconds(10)).Until(ExpectedConditions.ElementToBeClickable(By.XPath("//span[@class='k-dropdown-wrap k-state-default' and @role='listbox']/span[@class='k-input']"))).Click();
//or
new WebDriverWait(driver, TimeSpan.FromSeconds(10)).Until(ExpectedConditions.ElementToBeClickable(By.XPath("//span[@class='k-dropdown-wrap k-state-default' and @role='listbox']//span[@class='k-select']"))).Click();

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