Exception Encountered: Unhandled Alert Exception - Modal Dialog Detected (Using Selenium)

Currently, I am encountering an issue where an exception is being thrown, specifically an UnhandledAlertException stating that a modal dialog is present. Here are some traces of the exception:

org.openqa.selenium.UnhandledAlertException: Modal dialog present: This page is asking you to confirm that you want to leave - data you have entered may not be saved. Build info: version: '2.41.0', revision: '3192d8a6c4449dc285928ba024779344f5423c58', time: '2014-03-27 11:29:39' System info: host: 'NCESEPBLRNRE16', ip: '172.16.137.213', os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.6.0_26' Session ID: bda22089-a586-4cd8-b7ac-778c98581e11 Driver info: org.openqa.selenium.firefox.FirefoxDriverCapabilities [{platform=XP, acceptSslCerts=true, javascriptEnabled=true, browserName=firefox, rotatable=false, locationContextEnabled=true, version=23.0, cssSelectorsEnabled=true, databaseEnabled=true, handlesAlerts=true, browserConnectionEnabled=true, nativeEvents=false, webStorageEnabled=true, applicationCacheEnabled=true, takesScreenshot=true}]

After researching solutions, I found the following code snippet to handle the alert:

//Now the alert appears. Alert alert = driver.switchTo().alert(); alert.accept();

While this solution works fine, the alert popup may appear in different instances or scenarios, making it challenging to handle the alert consistently throughout the code blocks.

If anyone has suggestions for a common approach to permanently disable this alert popup through Firefox profile settings or any other generic methods, please share. My setup involves using Selenium with Java and Firefox as the browser.

javajavascriptfirefoxselenium

Answer №1

To check for the presence of an alert, use the following method:

protected boolean isAlertDisplayed() {
        try {
          driver.switchTo().alert();
          return true;
        } catch (NoAlertPresentException e) {
          return false;
        }
      }

Verify if an alert is present by calling the above method in your code snippet below: 

if(isAlertDisplayed()){
            System.out.println("An alert is displayed.");
            driver.switchTo().alert().accept();
        }

Answer №2

To tackle this problem, you can utilize a blend of the Robot class and Selenium Alert switch command.

driver.switchTo().alert();
// instantiate Robot class
Robot robot = new Robot();
robot.keyPress(KeyEvent.VK_ENTER);
robot.keyRelease(KeyEvent.VK_ENTER);

Give this method a try and inform me if you encounter any difficulties. It resolved the issue for me as I had encountered it previously.

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