如何验证硒webdriver中是否存在浏览器

Question

I am using webdriver to open a Firefox browser and iteratively pass a URL to it using a spreadsheet (that contains 5 URLs in different cells of column 1). Now if suppose i manually close the firefox browser after two URLs were opened. I want my script to handle this situation and continue the execution for which i tried the below three conditions, however everytime i get a Null pointer exception. Please suggest how to handle this situation.

if (driver.toString().contains("null"))
if (driver.getTitle().contains("null")) 
if (driver.getCurrentUrl().contains("null")) 

Answer 1

There is no inbuilt method for that However you can use this as a workaround

/**
 * 
 * @return true if driver is alive else false
 */
public Boolean isAlive() {
    try {
        driver.getCurrentUrl();//or driver.getTitle();
        return true;
    } catch (Exception ex) {
        return false;
    }
}