public static boolean isAlertPresent(WebDriver driver) {

　　try {

　　driver.switchTo().alert();

　　　　return true;

　　} catch (NoAlertPresentException ex) {

　　　　return false;

　　}

}

 

/**

* Sometimes will pop up an alert window, you can use this method to close

* it.

*/

public static void closeAlert(WebDriver driver, boolean acceptAlert) {

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

　　if (acceptAlert) {

　　　　alert.accept();

　　} else {

　　　　alert.dismiss();

　　}

}