在 table 中断言数据时出现 StaleElement 异常错误
StaleElement exception error when asserting data in a table
我正在尝试向 table 添加数据，然后断言通过在列表中收集 table 数据来添加数据，但每次它都会向我抛出 StaleElement 异常错误，现在我猜这是因为列表正在刷新，所以我不确定如何处理它。
这是我的实现
private static List<WebElement> listOfJobs =
driver.findElements(By.xpath(("//*[@id='resultTable']//tbody/tr//a")));
public static List<WebElement> getListOfJobs()
{
try
{
return listOfJobs;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
public static String generateName()
{
String AlphaNumericString = "abcdefghijklmnopqrstuvxyz";
StringBuilder sb = new StringBuilder(9);
for (int i = 0; i < 9; i++)
{
int index = (int)(AlphaNumericString.length() * Math.random());
sb.append(AlphaNumericString.charAt(index));
}
return sb.toString()+"digi";
}
@SuppressWarnings({ "null" })
public static List<String> listOfJobs()
{
List<String> jobs = null;
for(int i=0; i < OrangeHRMAddJobCategories.getListOfJobs().size(); i++)
{
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
}
return jobs;
}
OrangeHRMAddJobCategories jobCategories = new OrangeHRMAddJobCategories();
jobCategories.clickJobTab().clickJobCategoires().clickAdd().setJobCategoryName(UsefulFunctionUtils.generateName()).saveJobCategory();
Assertions.assertThat(UsefulFunctionUtils.listOfJobs().contains("digi"));
我觉得 listOfJobs 应该重新注入某个地方，但不确定我应该把它放在哪里，因为刷新页面不起作用。
完整的堆栈跟踪
org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
(Session info: chrome=94.0.4606.61)
For documentation on this error, please visit: https://www.seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'DESKTOP-R3JT7MO', ip: '192.168.0.103', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '16.0.1'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 94.0.4606.61, chrome: {chromedriverVersion: 94.0.4606.61 (418b78f5838ed..., userDataDir: C:\Users\CHINMA~1\AppData\L...}, goog:chromeOptions: {debuggerAddress: localhost:62489}, javascriptEnabled: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: WINDOWS, platformName: WINDOWS, proxy: Proxy(), setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, webauthn:extension:credBlob: true, webauthn:extension:largeBlob: true, webauthn:virtualAuthenticators: true}
Session ID: 8b68238ee73ae8190f250fa15fbb41f1
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:285)
at org.openqa.selenium.remote.RemoteWebElement.getText(RemoteWebElement.java:166)
at com.digicorp.utils.UsefulFunctionUtils.listOfJobs(UsefulFunctionUtils.java:45)
at com.digicorp.testcases.TC_AddJobCategory.testAddJobCategory(TC_AddJobCategory.java:26)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:598)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:824)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.testng.TestRunner.privateRun(TestRunner.java:794)
at org.testng.TestRunner.run(TestRunner.java:596)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:377)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:371)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:332)
at org.testng.SuiteRunner.run(SuiteRunner.java:276)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1212)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1134)
at org.testng.TestNG.runSuites(TestNG.java:1063)
at org.testng.TestNG.run(TestNG.java:1031)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
表示对元素的引用现在是“陈旧的”--- 元素不再出现在页面的 DOM 上。这种期望的原因可能是您的 DOM 已更新或刷新。例如，执行 click() 等操作后，您的 DOM 可能会更新或刷新。此时当您尝试在 DOM 上查找元素时，您将遇到此错误。
您必须在更新或刷新中重新找到该元素 DOM
try{
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
}catch(org.openqa.selenium.StaleElementReferenceException e){
new WebDriverWait(driver, 10).until(ExpectedConditions.visibilityOf(OrangeHRMAddJobCategories.getListOfJobs().get(i)));
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
}
根据与 OP 的对话，它在这一点上变得陈旧
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
可能是因为他正在调用 getListOfJobs 其中 returns WebElement 列表。
当您再次致电时，page dom 无法再使用它们，因为您可能已经在 first iteration 中与 web element/elements 进行过交互。修复很少，例如使用 Explicit wait staleness 或 redefining the elements again and again for next iteration.
修复 1 :
private static List<WebElement> listOfJobs = driver.findElements(By.xpath(("//*[@id='resultTable']//tbody/tr//a")));
public static List<WebElement> getListOfJobs(int j)
{
try
{
List<WebElement> listOfJobs = driver.findElements(By.xpath("(//*[@id='resultTable']//tbody/tr//a)['"+j+"']"));
return listOfJobs;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
@SuppressWarnings({ "null" })
public static List<String> listOfJobs()
{
int j = 1;
List<String> jobs = null;
for(int i=0; i < listOfJobs.size(); i++)
{
jobs.add(OrangeHRMAddJobCategories.getListOfJobs(j).get(i).getText());
j++;
}
return jobs;
}
您是在网页加载元素之前进行操作，请添加等待条件后再进行操作。
By divCss = By.xpath(("//*[@id='resultTable']//tbody/tr//a"));
wait.until(ExpectedConditions.elementToBeClickable(divCss));
wait.until(ExpectedConditions.presenceOfAllElementsLocatedBy(divCss));
我正在尝试向 table 添加数据，然后断言通过在列表中收集 table 数据来添加数据，但每次它都会向我抛出 StaleElement 异常错误，现在我猜这是因为列表正在刷新，所以我不确定如何处理它。
这是我的实现
private static List<WebElement> listOfJobs =
driver.findElements(By.xpath(("//*[@id='resultTable']//tbody/tr//a")));
public static List<WebElement> getListOfJobs()
{
try
{
return listOfJobs;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
public static String generateName()
{
String AlphaNumericString = "abcdefghijklmnopqrstuvxyz";
StringBuilder sb = new StringBuilder(9);
for (int i = 0; i < 9; i++)
{
int index = (int)(AlphaNumericString.length() * Math.random());
sb.append(AlphaNumericString.charAt(index));
}
return sb.toString()+"digi";
}
@SuppressWarnings({ "null" })
public static List<String> listOfJobs()
{
List<String> jobs = null;
for(int i=0; i < OrangeHRMAddJobCategories.getListOfJobs().size(); i++)
{
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
}
return jobs;
}
OrangeHRMAddJobCategories jobCategories = new OrangeHRMAddJobCategories();
jobCategories.clickJobTab().clickJobCategoires().clickAdd().setJobCategoryName(UsefulFunctionUtils.generateName()).saveJobCategory();
Assertions.assertThat(UsefulFunctionUtils.listOfJobs().contains("digi"));
我觉得 listOfJobs 应该重新注入某个地方，但不确定我应该把它放在哪里，因为刷新页面不起作用。
完整的堆栈跟踪
org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
(Session info: chrome=94.0.4606.61)
For documentation on this error, please visit: https://www.seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'DESKTOP-R3JT7MO', ip: '192.168.0.103', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '16.0.1'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 94.0.4606.61, chrome: {chromedriverVersion: 94.0.4606.61 (418b78f5838ed..., userDataDir: C:\Users\CHINMA~1\AppData\L...}, goog:chromeOptions: {debuggerAddress: localhost:62489}, javascriptEnabled: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: WINDOWS, platformName: WINDOWS, proxy: Proxy(), setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, webauthn:extension:credBlob: true, webauthn:extension:largeBlob: true, webauthn:virtualAuthenticators: true}
Session ID: 8b68238ee73ae8190f250fa15fbb41f1
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:285)
at org.openqa.selenium.remote.RemoteWebElement.getText(RemoteWebElement.java:166)
at com.digicorp.utils.UsefulFunctionUtils.listOfJobs(UsefulFunctionUtils.java:45)
at com.digicorp.testcases.TC_AddJobCategory.testAddJobCategory(TC_AddJobCategory.java:26)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:598)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:824)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.testng.TestRunner.privateRun(TestRunner.java:794)
at org.testng.TestRunner.run(TestRunner.java:596)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:377)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:371)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:332)
at org.testng.SuiteRunner.run(SuiteRunner.java:276)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1212)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1134)
at org.testng.TestNG.runSuites(TestNG.java:1063)
at org.testng.TestNG.run(TestNG.java:1031)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
表示对元素的引用现在是“陈旧的”--- 元素不再出现在页面的 DOM 上。这种期望的原因可能是您的 DOM 已更新或刷新。例如，执行 click() 等操作后，您的 DOM 可能会更新或刷新。此时当您尝试在 DOM 上查找元素时，您将遇到此错误。
您必须在更新或刷新中重新找到该元素 DOM
try{
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
}catch(org.openqa.selenium.StaleElementReferenceException e){
new WebDriverWait(driver, 10).until(ExpectedConditions.visibilityOf(OrangeHRMAddJobCategories.getListOfJobs().get(i)));
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
}
根据与 OP 的对话，它在这一点上变得陈旧
jobs.add(OrangeHRMAddJobCategories.getListOfJobs().get(i).getText());
可能是因为他正在调用 getListOfJobs 其中 returns WebElement 列表。
当您再次致电时，page dom 无法再使用它们，因为您可能已经在 first iteration 中与 web element/elements 进行过交互。修复很少，例如使用 Explicit wait staleness 或 redefining the elements again and again for next iteration.
修复 1 :
private static List<WebElement> listOfJobs = driver.findElements(By.xpath(("//*[@id='resultTable']//tbody/tr//a")));
public static List<WebElement> getListOfJobs(int j)
{
try
{
List<WebElement> listOfJobs = driver.findElements(By.xpath("(//*[@id='resultTable']//tbody/tr//a)['"+j+"']"));
return listOfJobs;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
@SuppressWarnings({ "null" })
public static List<String> listOfJobs()
{
int j = 1;
List<String> jobs = null;
for(int i=0; i < listOfJobs.size(); i++)
{
jobs.add(OrangeHRMAddJobCategories.getListOfJobs(j).get(i).getText());
j++;
}
return jobs;
}
您是在网页加载元素之前进行操作，请添加等待条件后再进行操作。
By divCss = By.xpath(("//*[@id='resultTable']//tbody/tr//a"));
wait.until(ExpectedConditions.elementToBeClickable(divCss));
wait.until(ExpectedConditions.presenceOfAllElementsLocatedBy(divCss));