selenium - 无法点击使用 findElements 方法获取的链接
问题描述
这只是从网页的特定部分获取所有链接的简单代码;单击这些链接获取标题并返回父页面并重复下一个页面的过程。但是在单击 2 个链接后,我收到错误“陈旧的元素参考:元素未附加到页面文档”请参考代码并让我知道我缺少什么。
我能够在新选项卡中打开链接并获取子页面的标题。但我想在同一个选项卡中打开一个链接。
package test;
import java.util.List;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
public class LinkTest {
public static void main (String[] args) throws InterruptedException{
System.setProperty("webdriver.chrome.driver", "C:\\ChromeDriver\\1\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("http://www.qaclickacademy.com/practice.php");
WebElement driverFooter = driver.findElement(By.xpath("//div[@id='gf-BIG']"));
WebElement footerC1 = driverFooter.findElement(By.xpath("//table/tbody/tr/td/ul[1]"));
List<WebElement> links = footerC1.findElements(By.tagName("a"));
for(int i=0;i<links.size();i++){
links.get(i).click();
System.out.println(driver.getTitle());
driver.navigate().back();
}
}
}
它应该打开所有链接并获取标题并返回到下一个迭代器的父页面。下面是输出和错误,
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
[1550488224.725][WARNING]: Timed out connecting to Chrome, retrying...
Practice Page
REST API Tutorial
Exception in thread "main" org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
(Session info: chrome=72.0.3626.109)
(Driver info: chromedriver=2.46.628402 (536cd7adbad73a3783fdc2cab92ab2ba7ec361e1),platform=Windows NT 10.0.16299 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 6 milliseconds
For documentation on this error, please visit: http://seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '2.53.0', revision: '35ae25b', time: '2016-03-15 17:00:58'
System info: host: 'DS-SGH631RNL8', ip: '10.118.59.16', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_201'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{mobileEmulationEnabled=false, timeouts={implicit=0, pageLoad=300000, script=30000}, hasTouchScreen=false, platform=XP, acceptSslCerts=false, goog:chromeOptions={debuggerAddress=localhost:53075}, acceptInsecureCerts=false, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, setWindowRect=true, unexpectedAlertBehaviour=ignore, applicationCacheEnabled=false, rotatable=false, networkConnectionEnabled=false, chrome={chromedriverVersion=2.46.628402 (536cd7adbad73a3783fdc2cab92ab2ba7ec361e1), userDataDir=C:\Users\RUSHIK~1.KAD\AppData\Local\Temp\scoped_dir11700_2428}, takesHeapSnapshot=true, pageLoadStrategy=normal, strictFileInteractability=false, databaseEnabled=false, handlesAlerts=true, version=72.0.3626.109, browserConnectionEnabled=false, proxy={}, nativeEvents=true, locationContextEnabled=true, cssSelectorsEnabled=true}]
Session ID: e1a6bdd0b525d1c6e1d940a2ec156e51
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.RemoteWebElement.execute(RemoteWebElement.java:327)
at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:85)
at test.LinkTest.main(LinkTest.java:23)
解决方案
当您尝试访问的元素在 dom 中不再可用或变得陈旧时,您会收到 StaleElementReferenceException,要纠正它,您需要再次选择元素然后对其进行操作。您可以修改您的代码,如:
System.setProperty("webdriver.chrome.driver", "C:\\ChromeDriver\\1\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("http://www.qaclickacademy.com/practice.php");
WebElement driverFooter = driver.findElement(By.xpath("//div[@id='gf-BIG']"));
WebElement footerC1 = driverFooter.findElement(By.xpath("//table/tbody/tr/td/ul[1]"));
List<WebElement> links = footerC1.findElements(By.tagName("a"));
for(int i=0;i<links.size();i++){
driverFooter = driver.findElement(By.xpath("//div[@id='gf-BIG']"));
footerC1 = driverFooter.findElement(By.xpath("//table/tbody/tr/td/ul[1]"));
List<WebElement> newLinks = footerC1.findElements(By.tagName("a"));
newLinks.get(i).click();
System.out.println(driver.getTitle());
driver.navigate().back();
driver.navigate().refresh();
}
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