Java Selenium查找元素（xpath）

Question

This is my first post in StackOverFlow, and being a chinese, please ignore my poor english lol.

I am trying to use selenium do following actions: 1.open the url(url in code) 2. click "zonal" link under the "Real-Time Market LBMP" menu, which has unique tag"P-24A" 3. get the time for "most recent interval" file and print out.

High lighted elements are my target:

I was stucked with second xpath selector:

    System.setProperty("webdriver.gecko.driver", "C:/Users/Haiqing/Downloads/geckodriver-v0.11.1-win64/geckodriver.exe");
    WebDriver wd = new FirefoxDriver(); 

    wd.get("http://mis.nyiso.com/public/"); 
    wd.switchTo().frame("MENU");

    WebElement zonalElement = wd.findElement(By.name("P-24Alist"));
    zonalElement.click();

    wd.switchTo().defaultContent();
    wd.switchTo().frame("BODY");
    WebElement mostRecentIntervalTime = wd.findElement(By.xpath("//a[contains(text(), 'Most recent interval')]/../following-sibling::td/span"));
    System.out.println("Most recent updated time is : " + mostRecentIntervalTime.getText()); 
    wd.quit();

And the HTML is belowed: Most recent interval 12/04/16 06:42 EST

got exception enter image description here

Answer 1

The element is inside <frame> , you need to switch to it first.

driver.switchTo().frame("MENU");

And to switch back

driver.switchTo().defaultContent();

You can look at the docs for more options for switchTo() method.