Selenium 新窗口处理方法

有时点击一个链接，跳到一个新的窗口，这时WebDriver需切换到新窗口，才能对新窗口的元素进行操作

这里封装一个switchToWindow方法：

    public boolean switchToWindow(WebDriver driver,String windowTitle){  
        boolean flag = false;  
        try {  
            String currentHandle = driver.getWindowHandle();  
            Set<String> handles = driver.getWindowHandles();  
            for (String s : handles) {  
                if (s.equals(currentHandle))  
                    continue;  
                else {  
                    driver.switchTo().window(s);  
                    if (driver.getTitle().contains(windowTitle)) {  
                        flag = true;  
                        System.out.println("Switch to window: "  
                                + windowTitle + " successfully!");  
                        break;  
                    } else  
                        continue;  
                }  
            }  
        } catch (NoSuchWindowException e) {  
            System.out.println("Window: " + windowTitle  
                    + " cound not found!");  
            flag = false;  
        }  
        return flag;  
    }  

}