Chrome 中的 xpath 点击失败

Question

我尝试使用从 xPathsOnClick Chrome 扩展获得的 xpath。在 Chrome 中都没有工作

/html/body/div[@id='content']/section[@id='landing']/button[@class='wide'] 
//section[@id='landing']/button[@class='wide'] 

System.out.println("clicking xpath");
driver.findElement(By.xpath("//section[@id='landing']/button[@class='wide']")).click();
Thread.sleep(2000);
System.out.println("clicking xpath again");    
driver.findElement(By.xpath("//section[@id='landing']/button[@class='wide']")).click();
Thread.sleep(2000);    

然后我尝试通过使用 Selenium IDE 在 FireFox 中记录点击来生成一个脚本，它记录了这次点击。这在我在 JUNIT4 测试中使用 FireFox 驱动程序运行 selenium 脚本时有效，但在我使用 ChromeDriver 时失败：

driver.findElement(By.cssSelector("button.wide")).click();

但我需要在 Chrome 中运行我的测试。什么可能导致我的脚本在 Chrome 中失败但在 FireFox 中失败？

这是我在此错误时返回的堆栈跟踪。

org.openqa.selenium.NoSuchElementException: no such element
  (Session info: chrome=32.0.1700.102)
  (Driver info: chromedriver=2.8.241036,platform=Mac OS X 10.9.1 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 30.04 seconds
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '2.37.1', revision: 'a7c61cbd68657e133ae96672cf995890bad2ee42', time: '2013-10-21 09:08:07'
System info: host: 'xxxxxxxxxxxx.local', ip: 'xxxxxxxx', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.9.1', java.version: '1.7.0_40'
Session ID: 80610629a5bacb30e815dacc5077693a
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{platform=MAC, acceptSslCerts=true, javascriptEnabled=true, browserName=chrome, chrome={userDataDir=/var/folders/0n/n2fztz7x2ssdk6fncrw2csk02pm9vz/T/.org.chromium.Chromium.AHvKDM}, rotatable=false, locationContextEnabled=true, version=32.0.1700.102, takesHeapSnapshot=true, cssSelectorsEnabled=true, databaseEnabled=false, handlesAlerts=true, browserConnectionEnabled=false, webStorageEnabled=true, nativeEvents=true, applicationCacheEnabled=false, takesScreenshot=true}]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:193)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:554)
    at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:307)
    at org.openqa.selenium.remote.RemoteWebDriver.findElementByCssSelector(RemoteWebDriver.java:396)
    at org.openqa.selenium.By$ByCssSelector.findElement(By.java:431)
    at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:299)
    at com.thelathe.FactorTrack_selenium.testFactorTrack(FactorTrack_selenium.java:31)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

我在 click 方法前面放了一个 Thread.sleep(5000) ，但它仍然错误并显示相同的消息

Thread.sleep(5000);          
driver.findElement(By.xpath("//section[@id='landing']/button[@class='wide']")).click();
Thread.sleep(2000);

Answer 1

问题是元素位于 iFrame 后面。我不需要通过 iFrame 对其进行测试，因此我能够解决我的问题。