selen test wirft org.openqa.selenium.NoSuchElementException

Question

Ich habe einen Selenium-Test für Yahoo Website geschrieben. In diesem Test teste ich Yahoo News. Aber dieser Code löst eine Ausnahme aus. Also bitte das Problem lösen? Ich verwende Eclipse IDE und Firefox als Browser.

Code:

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[]) { 
     new Tests().news(); 
    } 

    public boolean news() { 
     try { 
      System.out.print("Testing News... "); 
      driver.findElement(By.linkText("https://www.yahoo.com/news/")).click(); 
      driver.findElement(By.partialLinkText("/news/world/")).click(); 
      wait.until(new ExpectedCondition<Boolean>() { 
       public Boolean apply(WebDriver webDriver) { 
        return webDriver.findElement(By.id("th-title")) != null; 
       } 
      }); 
      return driver.findElement(By.id("th-title")).getText().contains("World"); 
     } 
     catch(Exception exp) { 
      exp.printStackTrace(); 
      return false; 
     } 
    } 
} 

Ausnahme:

Testing News... org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"link text","selector":"https://www.yahoo.com/news/"} 
Command duration or timeout: 21.55 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=https://www.yahoo.com/news/} 
Session ID: 7576b452-dcb2-448f-844c-6c8b499561f1 
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}] 
FAILED 
    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.news(Tests.java:72) 
    at Main.main(Main.java:14) 
Caused by: org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"link text","selector":"https://www.yahoo.com/news/"} 
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/anonymous2826618494991255784webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:10770) 
    at <anonymous class>.FirefoxDriver.prototype.findElement(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous2826618494991255784webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:10779) 
    at <anonymous class>.DelayedCommand.prototype.executeInternal_/h(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous2826618494991255784webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12661) 
    at <anonymous class>.DelayedCommand.prototype.executeInternal_(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous2826618494991255784webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12666) 
    at <anonymous class>.DelayedCommand.prototype.execute/<(file:///C:/Users/JAHANZ~1/AppData/Local/Temp/anonymous2826618494991255784webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12608) 

Answer 1

Bitte prüfen Yahoo page.
Bitte drücken Sie Strg-F und versuchen Sie einen Text zu finden: "https://www.yahoo.com/news/">
Es gibt keinen solchen Text dort.

Aber wenn Sie eine HTML-Quelltext dieser Seite schauen,
Sie dieses Bild Ein Tag mit href attriibutte = „“ https://www.yahoo.com/news/ „finden:

<a class="C(#fff) Td(n) Td(u):h" href="https://www.yahoo.com/news/" 
data-reactid=".pgwo63s1xy.$tgtm-UH-0-Header.1.0.0:$news.0">News</a> 

Aber ein‚Link-Text‘dieser Link nicht“ https://www.yahoo.com/news/“, aber "News".
die von # linktext Methode für den Linktext sucht (in diesem Fall "News"), nicht für href attributte

Sie müssen diesen Befehl ersetzen.

driver.findElement(By.linkText("https://www.yahoo.com/news/")).click(); 

mit dieser:

driver.findElement(By.linkText("News")).click();