java - 使用 phantomJs Selenium 滚动

Question

我正在尝试运行此特定代码以滚动网页，这是一种分页。它与 Firefox 驱动程序一起工作就像一个魅力，但是当我使用 phantomJS 时它不起作用并进入无限循环

public class Drivers {

public WebDriver phJS()
{
    File phantomjs = Phanbedder.unpack(); //Phanbedder to the rescue!

    String[] phantomArgs = new  String[] {
        "--webdriver-loglevel=NONE"
    };

    DesiredCapabilities dcaps = new DesiredCapabilities();
    dcaps.setCapability(PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY, phantomjs.getAbsolutePath());

    dcaps.setCapability( "phantomjs.cli.args", phantomArgs);
    WebDriver driver = new PhantomJSDriver(dcaps);
    phantomjs.delete();
    return driver;

}
public static void main(String args[]) throws IOException
{

    WebDriver wd=new FirefoxDriver();// Does Not work with new Drivers().phJS()

    wd.get("http://www.snapdeal.com/products/mobiles-mobile-phones/filters/Form_s~Smartphones#plrty|Brand:HTC|Ram_s:1%20GB^ 2%20GB^ 3%20GB^ 512%20MB%20and%20Below|Form_s:Smartphones|");
    wd= new PageScroll().scrollToBottom(wd);
    List<WebElement> wele = wd.findElements(By.xpath("//*[@class=' product-image ']/a"));
    for(WebElement we:wele)
    {
         System.out.println(we.getAttribute("href"));
    }
     wd.quit();
}

这是执行滚动的代码

public class PageScroll {
WebDriver driver;
 public WebDriver scrollToBottom(WebDriver driver) {
     String oldpage="";
     String newpage="";
     do{
         oldpage=driver.getPageSource();
        ((JavascriptExecutor) driver)
                .executeScript("window.scrollTo(0, document.body.scrollHeight)");

         newpage=driver.getPageSource();
        System.out.println(oldpage.equals(newpage));
     }while(!oldpage.equals(newpage));
        return driver;
    }

当我使用 PhantomJS 时，它会进入 do while 的无限循环，我不明白为什么。是不是ajax脚本没有执行？但如果是这样，它应该跳出循环，如果它滚动，为什么它不像 firefox 驱动程序那样停止？

Answer 1

得到答案，我叫了显式等待。并且工作正常

public synchronized WebDriver scrollToBottom(WebDriver driver, WebElement element,int time) throws InterruptedException {
     String oldpage="";
     String newpage="";


     do{
         oldpage=driver.getPageSource();
         ((JavascriptExecutor) driver)
                .executeScript("window.scrollTo(0, (document.body.scrollHeight))");
         this.wait(time);
         newpage=driver.getPageSource();
    }while(!oldpage.equals(newpage));
        return driver;
    }