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有人可以帮忙吗，我在eclipse上设置了一个maven项目，每次运行测试时，它在chrome上运行良好，但我在junit控制台上收到以下错误：

org.openqa.selenium.NoSuchSessionException: Session ID is null. Using WebDriver after calling quit()?
Build info: version: '4.0.0-alpha-3', revision: '8c567de6dc'
System info: host: '04081W10', ip: '10.50.47.210', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_201'
Driver info: driver.version: RemoteWebDriver
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:128)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:576)
    at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:327)
    at org.openqa.selenium.remote.RemoteWebDriver.findElementById(RemoteWebDriver.java:375)
    at org.openqa.selenium.By$ById.findElement(By.java:196)
    at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:319)
    at Scenarios.NormanNrasProject.InternalNameReserve1YearTest.InternalNameReserve90DaysTest(InternalNameReserve1YearTest.java:59)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)

这是我的代码：

    System.setProperty("webdriver.chrome.driver", "C:\\Users\\nrapoo\\Desktop\\chromedriver.exe");
    WebDriver driver = new ChromeDriver();
    WebDriverWait wait=new WebDriverWait(driver, 20);
    driver.get("http://cedd-wb/enter.htm");
    driver.manage().window().maximize();
    driver.findElement(By.xpath("//*[@id=\"username\"]")).sendKeys("seden");
    driver.findElement(By.xpath("//*[@id=\"pword\"]")).sendKeys("hello1");
    driver.findElement(By.xpath("//*[@id=\"login_form\"]/div[3]/button")).click();      
    driver.findElement(By.xpath("//*[@id=\'menuDropdown-enq\']")).click();
    Thread.sleep(300L);
    driver.findElement(By.xpath("//ul[@class='list-unstyled di-block m-y-10']//a[contains(text(),'People')]")).click();
    driver.switchTo().frame("browsePeopleFrame");
    Thread.sleep(500L);
    driver.findElement(By.xpath("//*[@id='quickselect']")).sendKeys("ATNS");        
    Thread.sleep(500L);
    driver.findElement(By.xpath("//*[@id=\"peopleSelectFormBean\"]/div[2]/div[1]/div/div/div/span[2]/button/span")).click();
    driver.switchTo().defaultContent();
    WebElement namingwait;
    namingwait = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//ul[@id='categories-tabs']//a[contains(text(),'Naming')]")));
    namingwait.click();
    driver.switchTo().defaultContent();
    WebElement reservedname;
    reservedname = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//*[@id=\"category-114\"]/div[1]/a[1]")));
    reservedname.click();
    Thread.sleep(900L);
    driver.findElement(By.xpath("//*[@id=\"content\"]/section[3]/div/article/header/ul/li/a")).click();
    char[] chars = "abcdefghijklmnopqrstuvwxyz".toCharArray();
    StringBuilder sb = new StringBuilder();
    Random random = new Random();
    for (int i = 0; i < 8; i++) {
        char c = chars[random.nextInt(chars.length)];
        sb.append(c);   
    String name = sb.substring(0, 1).toUpperCase() + sb.substring(1);   
    driver.findElement(By.id("newName")).sendKeys("Cote" + name + name + name + "jay");
    driver.findElement(By.xpath("//*[@id=\"proposedNameForm\"]/div/div/div[1]/span/button")).click();
    driver.findElement(By.xpath("//textarea[@id='meaning']")).sendKeys("MEANING");
    driver.findElement(By.xpath("//*[@id=\"reservationType2\"]")).click();

    Thread.sleep(900L);
    driver.findElement(By.xpath("//*[@id=\"nav-footer\"]/div/ul/li[1]/button")).click();
    driver.findElement(By.xpath("//button[@name='_target10']")).click();
    driver.findElement(By.xpath("//button[@name='_finish']")).click();
    driver.findElement(By.xpath("//a[contains(text(),'Return to Enquire Name Reservations')]")).click();
    Thread.sleep(900L);
    driver.quit();
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1 回答 1

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我在此代码块中看到的唯一问题是，您只切换到了frame一次：

driver.switchTo().frame("browsePeopleFrame");

当您切换到defaultContent()两次时：

driver.switchTo().defaultContent();
WebElement namingwait;
namingwait = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//ul[@id='categories-tabs']//a[contains(text(),'Naming')]")));
namingwait.click();
driver.switchTo().defaultContent();

您需要调整帧切换。

但是，Selenium Java 客户端 v4.0.0-alpha-3是一个 alpha 版本，不应用于生产测试。

此外，请确保：

  • ChromeDriver已更新至当前ChromeDriver v79.0.3945.36级别。
  • Chrome已更新到当前的Chrome 版本 79.0级别。（根据ChromeDriver v79.0 发行说明）
  • 通过IDE清理项目工作区并仅使用所需的依赖项重建项目。
  • 如果您的基本Web Client版本太旧，请通过Revo Uninstaller卸载它并安装最新的 GA 和已发布版本的Web Client。
于 2019-12-03T15:16:32.543 回答