在 Selenium Webdriver 中从子窗口切换到父窗口

Question

我正在使用 Eclipse 在 Selenium WebSriver 中创建测试脚本，并且在我有一个父窗口的场景中遇到了障碍，我单击该窗口上的链接并打开一个子窗口。然后我想关闭子窗口并在父窗口上再次执行功能。

我的代码如下：

public static void daysInStockSelectContract(InternetExplorerDriver driver) {
    driver.findElement(By.xpath(".//*[@id='page-content']/table/tbody/tr[1]/td[1]/a")).click();

    for(String winHandle : driver.getWindowHandles()) {
        driver.switchTo().window(winHandle);
        driver.close();
    }
 }

当我运行上面的代码时，子窗口保持打开而父窗口关闭，这与我想要的效果相反。控制台中还会显示如下错误：

“线程“主”org.openqa.selenium.remote.SessionNotFoundException 中的异常：会话 1ff55fb6-71c9-4466-9993-32d7d9cae760 不存在”

我正在为我的 Selenium 脚本使用 IE WebDriver。

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更新 - 2014 年 11 月 17 日

Subh，这是我从您发送的链接中使用的代码，不幸的是它似乎不起作用。

public static void daysInStockSelectContract(InternetExplorerDriver driver) {
    //get the parent handle before clicking on the link
    String winHandleBefore = driver.getWindowHandle();

    driver.findElement(By.xpath(".//*[@id='page-content']/table/tbody/tr[1]/td[1]/a")).click();

    // the set will contain only the child window now. Switch to child window and close it.
    for(String winHandle : driver.getWindowHandles()) {
        driver.switchTo().window(winHandle);
    }
    driver.close();
    driver.switchTo().window(winHandleBefore);
}

Answer 1

可能是切换到子窗口不正确。

因此，'driver.close()' 正在关闭父窗口，而不是子窗口。此外，由于父窗口已关闭，这意味着会话已丢失，这会导致错误 'SessionNotFoundException'。

此链接将在properly switching between windows 中为您提供帮助

另外，只是一个建议。与其将 "driver" 作为参数传递，不如将其设为静态变量。类中的所有方法及其子类都可以轻松访问它，并且您不必每次都将其传递给方法.. :)

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以下是您在评论中要求的代码（与上述问题无关）

public class Testing_anew {

    public static WebDriver driver;

    public static void main(String args[]) throws InterruptedException{

        driver = new FirefoxDriver();

        driver.manage().window().maximize();

        driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);

      }

    public static void testmethod(){

    driver.findElement(By.xpath("//some xpath")).click();
   }

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更新代码 19/11/14

public static void daysInStockSelectContract(InternetExplorerDriver driver) {
    //get the parent handle before clicking on the link 
    String winHandleBefore = driver.getWindowHandle();

    System.out.println("Current handle is: "+winHandleBefore);

    driver.findElement(By.xpath(".//*[@id='page-content']/table/tbody/tr[1]/td[1]/a")).click();

    // Iterating through the set of window handles till the child window's handle, that is infact
    // not equal to the current window handle, is found
    for(String winHandle : driver.getWindowHandles()) {
       if(!winHandle.equals(winHandleBefore)){
                System.out.println("Child handle is: "+ winHandle);
                //Sleeping for 4 seconds for detecting Child window
                try{
                    Thread.sleep(4000);
                   }catch(InterruptedException e){
                    System.out.println("Caught exception related to sleep:"+e.getMessage());
                   }
                driver.switchTo().window(winHandle);
                break;
            }
    } 

    System.out.println("AFTER SWITCHING, Handle is: "+driver.getWindowHandle());

    driver.close();

    //Sleeping for 4 seconds for detecting Parent window
    try{
        Thread.sleep(4000);
       }catch(InterruptedException e){
        System.out.println("Caught exception related to sleep:"+e.getMessage());
       }

    driver.switchTo().window(winHandleBefore); // Switching back to parent window

     System.out.println("NOW THE CURRENT Handle is: "+driver.getWindowHandle());

     //Now perform some user action here with respect to parent window to assert that the window has switched properly


} 

Answer 2

当您遍历 windowHandles 时，第一个句柄是父句柄。所以当你说driver.close() 时，父窗口正在关闭。使用以下代码可以避免这种情况：

public static void daysInStockSelectContract(InternetExplorerDriver driver) {
    //get the parent handle before clicking on the link
    String parentHandle = driver.getWindowHandle();

    driver.findElement(By.xpath(".//*[@id='page-content']/table/tbody/tr[1]/td[1]/a")).click();

    //get all the window handles and assign it to a set 
    //It will include child window and parentwindow
    Set<String> windowHandles = driver.getWindowHandles();

    System.out.println("No of Window Handles: " + windowHandles.size());

    //remove the parent handle from the set
    windowHandles.remove(parentHandle);

    // the set will contain only the child window now. Switch to child window and close it.
    for(String winHandle : driver.getWindowHandles()) {

强文本 driver.switchTo().window(winHandle); 司机.close(); } }

如果您得到的大小为 1（没有 windowHandles 为 1）或收到相同的错误消息，那么该窗口可能是一个警告框。要处理警报框，您可以在单击链接后使用以下代码。

Alert alert = driver.switchTo().alert();
alert.accept();

试试这段代码进行调试

public static void daysInStockSelectContract(InternetExplorerDriver driver) {
    // get the parent handle before clicking on the link
    String parentHandle = driver.getWindowHandle();
    System.out.println("ParentHandle : " + parentHandle);
    driver.findElement(
            By.xpath(".//*[@id='page-content']/table/tbody/tr[1]/td[1]/a"))
            .click();

    // get all the window handles and assign it to a set
    // It will include child window and parentwindow
    Set<String> windowHandles = driver.getWindowHandles();

    System.out.println("No of Window Handles: " + windowHandles.size());

    // remove the parent handle from the set
    windowHandles.remove(parentHandle);

    // the set will contain only the child window now. Switch to child
    // window and close it.
    for (String winHandle : driver.getWindowHandles()) {
        driver.switchTo().window(winHandle);
        System.out.println("Child Handle : " + winHandle);
        driver.close();
    }

    // get the window handles again, print the size
    windowHandles = driver.getWindowHandles();
    System.out.println("No of Window Handles: " + windowHandles.size());
    for (String winHandldes : windowHandles) {
        System.out.println("Active Window : " + winHandldes);
    }

    driver.switchTo().window(parentHandle);
}

Answer 3

我设法通过使用上述 Subh 概述的步骤解决了这个问题。特别是，确保在“Internet 选项”的“安全”选项卡上禁用“启用保护模式”