在Java中，我编写了Selenium测试来测试Yahoo Movies。我正在从Yahoo网站测试This Movie。但是我编写的代码（下面给出）抛出了一个异常（下面给出）。我是Selenium的新手，所以请解决问题。
码：
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.ExpectedCondition;
import org.openqa.selenium.support.ui.Wait;
import org.openqa.selenium.support.ui.WebDriverWait;
public class Tests {
WebDriver driver;
Wait<WebDriver> wait;
boolean result;
Tests() {
driver = new FirefoxDriver();
wait = new WebDriverWait(driver, 30);
driver.get("http://www.yahoo.com/");
}
public static void main(String arg[]) {
boolean result = new Tests().movies();
System.out.println(result?"PASSED":"FAILED");
}
public boolean movies() {
try {
System.out.print("Testing Movies... ");
driver.findElement(By.linkText("Movies")).click();
driver.findElement(By.linkText("Finding Dory")).click();
wait.until(new ExpectedCondition<Boolean>() {
public Boolean apply(WebDriver webDriver) {
return webDriver.findElement(By.className("yvp-flash-video")) != null;
}
});
return driver.findElement(By.id("Main")).getText().contains("'Finding Dory' Trailer");
}
catch(Exception exp) {
exp.printStackTrace();
return false;
}
}
}
例外：
Testing Movies... org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"link text","selector":"Finding Dory"}
Command duration or timeout: 5.08 seconds
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '2.53.0', revision: '35ae25b', time: '2016-03-15 16:57:40'
System info: host: 'Jahanzeb', ip: '10.99.14.207', os.name: 'Windows 8.1', os.arch: 'amd64', os.version: '6.3', java.version: '1.7.0_79'
*** Element info: {Using=link text, value=Finding Dory}
Session ID: 5f14f1fa-85e4-471e-982f-27317dd766b7
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{platform=WINDOWS, 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=46.0.1}]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:678)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:363)
at org.openqa.selenium.remote.RemoteWebDriver.findElementByLinkText(RemoteWebDriver.java:428)
at org.openqa.selenium.By$ByLinkText.findElement(By.java:246)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:355)
at Tests.movies(Tests.java:189)
at Main.main(Main.java:14)
Caused by: org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"link text","selector":"Finding Dory"}
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '2.53.0', revision: '35ae25b', time: '2016-03-15 16:57:40'
System info: host: 'Jahanzeb', ip: '10.99.14.207', os.name: 'Windows 8.1', os.arch: 'amd64', os.version: '6.3', java.version: '1.7.0_79'
Driver info: driver.version: unknown
at <anonymous class>.FirefoxDriver.prototype.findElementInternal_(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous903980554428331931webdriver-profile/extensions/[email protected]/components/driver-component.js:10770)
at <anonymous class>.FirefoxDriver.prototype.findElement(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous903980554428331931webdriver-profile/extensions/[email protected]/components/driver-component.js:10779)
at <anonymous class>.DelayedCommand.prototype.executeInternal_/h(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous903980554428331931webdriver-profile/extensions/[email protected]/components/command-processor.js:12661)
at <anonymous class>.DelayedCommand.prototype.executeInternal_(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous903980554428331931webdriver-profile/extensions/[email protected]/components/command-processor.js:12666)
at <anonymous class>.DelayedCommand.prototype.execute/<(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous903980554428331931webdriver-profile/extensions/[email protected]/components/command-processor.js:12608)
FAILED
最佳答案
我假设您正在尝试单击此页面上名为“ Finding Dory”的“链接”：
但这不是链接-尝试手动单击它，根本无法单击它。
如果单击它，则什么也不会发生，只是不可点击-这不过是一个简单的文本“ Finding Dory”。
您可以做的是单击文本“ Finding Dory”下面的一个名为“ Play trailer”的链接。问题在于此页面上有许多链接具有相同的名称“播放预告片”，并且WebDriver不知道应单击哪个链接，如果尝试使用简单方法findElement( By.linkText('Play trailer')).click();，则会返回错误。
您需要告诉WebDriver，它应该单击文本“ Finding Dory”下的链接。为此，您需要比简单方法By.linkText更高级的定位策略。最受欢迎的两个是使用xpath或CSS表达式进行定位。
首先，您需要检查此页面的结构。在浏览器中打开此页面，然后按F12键-这将打开“开发人员工具”窗口（如何使用此工具超出了此答案）。您将看到如下内容：
那是：DIV标记，其中包含文本“ Finding Dory”
后跟A标记，其中包含文本“播放预告片”
您可以为上述内容构建xpath表达式，以这种方式在包含“ Finding Dory”的DIV标记下找到“播放预告片”链接：
//div[contains(.,'Finding Dory')]/following-sibling::a[contains(.,'Play trailer')]
然后替换代码的这一行：
driver.findElement(By.linkText("Finding Dory")).click();
与此：
driver.findElement(
By.xpath(
"//div[contains(.,'Finding Dory')]/following-sibling::a[contains(.,'Play trailer')]"
)).click();