Question

我有一个场景，我执行以下步骤：

打开浏览器 - ＆gt;导航到并单击打开新窗口的链接
使用driver.switchTo().window(handle)切换到子窗口 - ＆gt;在子窗口上执行操作。
关闭子窗口。
切换回父窗口。
获取当前窗口的标题。

步骤1到3工作正常。但是第4步抛出异常。为了更清楚，我在throw.n

// Switching to child window
[testng] 23:40:33.794 INFO - Executing: [switch to window: 3efe9598-2a08-40ec-a950-d4a6e2182b20])
[testng] W 2016-02-08 23:40:33:808 Browser.cpp(241) Unable to get window name, IHTMLWindow2::get_name failed or returned a NULL value
[testng] W 2016-02-08 23:40:33:821 Browser.cpp(241) Unable to get window name, IHTMLWindow2::get_name failed or returned a NULL value
[testng] 23:40:33.942 INFO - Done: [switch to window: 3efe9598-2a08-40ec-a950-d4a6e2182b20]
[testng] 23:40:33.944 INFO - Executing: [get title])
[testng] 23:40:33.955 INFO - Done: [get title]
[testng] 23:41:34.708 INFO - Executing: [close window])
[testng] 23:41:34.719 INFO - Done: [close window]
// Switch to parent window
[testng] 23:41:34.751 INFO - Executing: [switch to window: b2dd5b6e-c891-498f-871b-1fc80b4afef2])
[testng] W 2016-02-08 23:41:34:753 IECommandExecutor.cpp(595) Unable to find managed browser with id 3efe9598-2a08-40ec-a950-d4a6e2182b20
[testng] W 2016-02-08 23:41:34:753 IECommandExecutor.cpp(504) Unable to find current browser
[testng] W 2016-02-08 23:41:34:765 Browser.cpp(241) Unable to get window name, IHTMLWindow2::get_name failed or returned a NULL value
[testng] W 2016-02-08 23:41:34:865 IECommandExecutor.cpp(595) Unable to find managed browser with id 3efe9598-2a08-40ec-a950-d4a6e2182b20
[testng] W 2016-02-08 23:42:34:875 response.cc(69) Error response has status code 21 and message 'Timed out waiting for page to load.' message
[testng] 23:42:34.879 WARN - Exception thrown
[testng] org.openqa.selenium.TimeoutException: Timed out waiting for page to load. (WARNING: The server did not provide any stacktrace information)
[testng] Command duration or timeout: 60.13 seconds
[testng] Build info: version: '2.43.1', revision: '5163bceef1bc36d43f3dc0b83c88998168a363a0', time: '2014-09-10 09:43:55'
[testng] System info: host: 'x-x-x-x', ip: 'x.x.x.x', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_31'
[testng] Driver info: org.openqa.selenium.ie.InternetExplorerDriver
[testng] Capabilities [{browserAttachTimeout=0, enablePersistentHover=false, ie.forceCreateProcessApi=false, ie.usePerProcessProxy=false, ignoreZoomSetting=false, handlesAlerts=true, version=11, platform=WINDOWS, nativeEvents=true, ie.ensureCleanSession=false, elementScrollBehavior=0, ie.browserCommandLineSwitches=, requireWindowFocus=false, browserName=internet explorer, initialBrowserUrl=http://localhost:42778/, takesScreenshot=true, javascriptEnabled=true, ignoreProtectedModeSettings=true, enableElementCacheCleanup=true, cssSelectorsEnabled=true, unexpectedAlertBehaviour=accept}]`

我们正在使用基于flashSelenium的特殊框架，我们的开发人员已经设法将Flash Selenium与WebDriver集成（最初闪存Selenium旨在与RC一起使用）。根据我的理解，我们的框架涉及flashSelenium，RC和Webdriver组件。我是团队的新手，框架API没有处于活动开发状态（不支持）。

当我在第4步尝试捕捉时，第5步正确执行。我可以看到步骤4周围的异常块打印错误!!

所以这是我的问题：在任何情况下，driver.switchTo（）。window（parentWindow）都会给出如上所示的异常吗？

从下面的日志段开始，我可以看到切换到窗口但是切换窗口的内部方法会抛出异常，因为连续的行表示。

[testng] 23:41:34.751 INFO - Executing: [switch to window: b2dd5b6e-c891-498f-871b-1fc80b4afef2])
[testng] W 2016-02-08 23:41:34:753 IECommandExecutor.cpp(595) Unable to find managed browser with id 3efe9598-2a08-40ec-a950-d4a6e2182b20
[testng] W 2016-02-08 23:41:34:753 IECommandExecutor.cpp(504) Unable to find current browser
[testng] W 2016-02-08 23:41:34:765 Browser.cpp(241) Unable to get window name, IHTMLWindow2::get_name failed or returned a NULL value
[testng] W 2016-02-08 23:41:34:865 IECommandExecutor.cpp(595) Unable to find managed browser with id 3efe9598-2a08-40ec-a950-d4a6e2182b20
[testng] W 2016-02-08 23:42:34:875 response.cc(69) Error response has status code 21 and message 'Timed out waiting for page to load.' message
[testng] 23:42:34.879 WARN - Exception thrown

代码如下所示

String parentHandle = driver.getWindowHandle();
// Click on the element code goes here (This is in flash selenium)
Set<String> windowhandles = driver.getWindowHandles(); 
for (String windowHandle : windowHandles) {
    driver.switchTo().window(windowHandle);
}

System.out.println("Child title : " + driver.getTitle());
driver.close;
// Exception is thrown in the below line. If a try catch is placed
// the last line gets executed (sysout). But I can see the catch getting executed.
driver.switchTo().window(parentHandle);
System.out.println("Child title : " + driver.getTitle());

Answer 1

你是对的，使用driver.close()后，Selenium不会自动切换到父窗口。当您尝试driver.switchTo().window(currentWindow)时，驱动程序仍然专注于关闭窗口的窗口句柄，这导致错误日志中出现Unable to find managed browser with id 3efe9598-2a08-40ec-a950-d4a6e2182b20和Unable to find current browser消息。

如果要切换回父句柄，则应在切换之前保存它

String parentHandle = driver.getWindowHandle();
driver.switchTo().window(childHandle); // switch to child window
driver.close(); // close child window
driver.switchTo().window(parentHandle); // switch focus back to parent window

在子窗口被driver.close（）关闭后切换到父窗口抛出异常

1 个答案: