无法使用selenium webdrive单击带有和标签的列表元素

Question

我有一个nav标签中的元素列表。我想单击第一个列表元素。我的HTML如下所示：

<aside id="left-panel" style="overflow: visible;">
   <div id="selectedBrand" class="custum-brand-info login-info">
      <span class="dropdown">
    </div>
    <nav>
       <ul id="sideNavigation">
          <li>
             <a onclick="showHideBrandmanagement(true);" href="/sentiment/view">
                <i class="fa fa-lg fa-fw fa-thumbs-up"></i>
                <span class="menu-item-parent">Sentiment</span>
             </a>
          </li>
       </ul>
    </nav>

我的测试用例有时会失败；我的测试用例通过了，但有时失败了。我正在使用XVFB以无头模式运行我的测试用例。

应该获取主题*FAILED*中的数据

[info]   org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"css selector","selector":"#left-panel nav #sideNavigation li:nth-child(9) #rAnalytics"}
[info] Command duration or timeout: 10.06 seconds
[info] For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
[info] Build info: version: '2.47.1', revision: 'unknown', time: '2015-07-30 11:02:44'
[info] System info: host: 'knoldus-Vostro-2520', ip: '127.0.0.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.19.0-30-generic', java.version: '1.7.0_80'
[info] *** Element info: {Using=css selector, value=#left-panel nav #sideNavigation li:nth-child(9) #rAnalytics}
[info] Session ID: edc0a525-38bb-48b2-88c4-e1ad01265c15
[info] Driver info: org.openqa.selenium.firefox.FirefoxDriver
[info] Capabilities [{platform=LINUX, acceptSslCerts=true, javascriptEnabled=true, cssSelectorsEnabled=true, databaseEnabled=true, browserName=firefox, handlesAlerts=true, nativeEvents=false, webStorageEnabled=true, rotatable=false, locationContextEnabled=true, applicationCacheEnabled=true, takesScreenshot=true, version=41.0}]
[info]   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[info]   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
[info]   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[info]   at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
[info]   at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
[info]   at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
[info]   at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:595)
[info]   at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:348)
[info]   at org.openqa.selenium.remote.RemoteWebDriver.findElementByCssSelector(RemoteWebDriver.java:437)
[info]   at selenium.professionalPlan.Topic$$anonfun$1$$anonfun$apply$mcV$sp$1.apply(Topic.scala:31)
[info]   ...
[info]   Cause: org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"css selector","selector":"#left-panel nav #sideNavigation li:nth-child(9) #rAnalytics"}
[info] For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
[info] Build info: version: '2.47.1', revision: 'unknown', time: '2015-07-30 11:02:44'
[info] System info: host: 'knoldus-Vostro-2520', ip: '127.0.0.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.19.0-30-generic', java.version: '1.7.0_80'
[info] Driver info: driver.version: unknown
[info]   at .FirefoxDriver.prototype.findElementInternal_(file:///tmp/anonymous5218088375039490898webdriver-profile/extensions/[e-mail]/components/driver-component.js:10667)
[info]   at .fxdriver.Timer.prototype.setTimeout/<.notify(file:///tmp/anonymous5218088375039490898webdriver-profile/extensions/[e-mail]/components/driver-component.js:623)
[1]

Answer 1

如果只想找到一个id，请使用

//nav[1]/ul[@id='sideNavigation']

但上面的xpath将返回许多元素。

如果您正在寻找包含"Sentiment"文本的元素，请使用下面的Xpath：-

//nav[1]/ul[@id='sideNavigation']//span[contains(text(),'Sentiment')]

如果它仍然不工作，然后检查您的页面中是否有任何框架。如果该框架包含上述元素的超文本标记语言代码，那么您需要先切换到框架

请尝试使用以下代码：-

WebElement elem = driver.findElement(By.xpath("//nav[1]/ul[@id='sideNavigation']//span[contains(text(),'Sentiment')]"));
String js = "arguments[0].style.height='auto'; arguments[0].style.visibility='visible';";

JavascriptExecutor executor = (JavascriptExecutor) driver;
executor.executeScript(js, elem);;

希望它能帮助您：）