org.openqa.selenium.support.ui.UnexpectedTagNameException：在选择下拉值时，元素应为“选择”但为“跨度”

@MosheSlavin的分析和回答是正确的方向。

这个错误讯息…

"Exception in thread "main" org.openqa.selenium.support.ui.UnexpectedTagNameException: Element should have been "select" but was "span"

…意味着您已经使用

Select

<span>

要使用硒从下拉列表中选择一个值，例如用户名，您可以使用以下解决方案：

• Code Block:

        driver.get("https://ecabportal.azurewebsites.net/dashboard");    new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.name("email"))).sendKeys("admin@malbork.in");    driver.findElement(By.name("password")).sendKeys("NsSaNj@0205");    driver.findElement(By.name("signIn")).click();    new WebDriverWait(driver, 20).until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//h1[contains(., 'Dashboard')]")));    driver.get("https://ecabportal.azurewebsites.net/user");    new WebDriverWait(driver, 20).until(ExpectedConditions.invisibilityOfElementLocated(By.xpath("//div[@id='load']")));    new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.cssSelector("span.select2-selection.select2-selection--single>span.select2-selection__rendered"))).click();    new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//span[@]//li[contains(., 'User Name')]"))).click();

• Browser Snapshot:

Note:

• 当页面更改（即DOM）更改时，请始终在尝试方法之前为WebDriverWait诱导。

  elementToBeClickable()

  click()

• 在这个特殊的用例，当你浏览到所需的页面不存在用于需要引起覆盖WebDriverWait的

  invisibilityOfElementLocated()

  然后调用所需

  click()

  .