selenium - Selenium Webdriver sessionId 或检查所有浏览器窗口是否关闭

Question

有没有办法查看是否所有的浏览器窗口都关闭了？我看到如果您在 WebDriver 上调用 driver.quit() 或 driver.close()，则 sessionId 变为空。有没有办法检查？

我不想调用已关闭或退出的驱动程序，因为它会引发 WebDriverException。所以我想在继续之前检查浏览器的状态。

Answer 1

刚设置

driver=null; 

每次你退出浏览器，然后检查

if (browser!=null){
  //Attention: this comand is not supported
  //as far as i know ;)
  driver.doSomething();
}

或者

try{


}catch (NullPointerException e)

    e.printStackTrace();
    System.err.print"DAMN";
}

或收到 NullPointerException ;)

Answer 2

public bool InstanceExist
    {
        get
        {
            if (Instance != null)
            {
                try
                {
                    return (Instance.WindowHandles != null); // allways returns true if browser instance exist or thrown error
                }
                catch (Exception e)
                {
                    return false;
                    // means that browser was closed by user
                }
            }
            return false; // means that it wasn't created yet or was closed by developer programmally
        }
    }

你需要检查3种情况：

1. 未创建驱动程序
2. 驱动程序被开发商关闭
3. 浏览器已被用户关闭，但 driwer 实例仍然存在

使用此代码检查所有这些情况。

Answer 3

我认为检测是否所有窗户都关闭的最干净的方法是：

boolean allWindowsClosed = webDriver.getWindowHandles().isEmpty();

getWindowHandles 为所有打开的窗口返回一组窗口句柄 - 请参阅http://selenium.googlecode.com/git/docs/api/java/org/openqa/selenium/WebDriver.html#getWindowHandles()

Answer 4

实际上在浏览器窗口消失时调用 getWindowHandles 会引发“UnreachableBrowserException”。

您必须将调用放入 try-catch 块并处理该错误。实际上，这是捕获意外浏览器窗口关闭的唯一已知工作方法。我在配置类中有一个静态方法来处理我的驱动程序：我像这样重新启动浏览器：

protected static void loadPages() {

    if (driver == null || driver.toString().contains("null"))  { //null refers to an missing session id

            driver = new FirefoxDriver();

        //load all my page objects like
        loginpage = new LoginPage(driver);
        //....
        //....

        }
try {
        if (driver.getWindowHandles() == null || driver.getWindowHandles().isEmpty()){ //will cause an UnreachableBrowserException if the browser really is not avalable. 
            try { //you actually dont need this try catch block 
                driver.quit();
            } catch (Exception e) {
                System.err.println("Quitting levtover driver did not work.");
            }
            driver = null; //you have to set the driver to null
            loadPages();
            }
    } catch (UnreachableBrowserException ube) {
        driver = null; //like above set to null to make sure no driver left
    }

}

现在，您当前的测试将失败，但您将能够继续进行其余测试。

Answer 5

在 C# 中

    public void BrowserCheck()
    {
        try
        {
            var h = webDriver.WindowHandles;
            return; // no problem
        }
        catch // browser window is closed so re-init it
        {
            webDriver.Quit();
            WebDriverInit(); // your init code 
        }
    }