我想向下滚动我的网页，即时通讯使用此代码滚动页面，但无法正常工作

public ViewBasketSentToMePageObject viewSlideShare() throws InterruptedException {

    Thread.sleep(500l);

    Actions action1 =new Actions(getDriver());
    action1.keyDown(Keys.CONTROL).sendKeys(String.valueOf('\u0030')).build().perform();

    List<WebElement> function = getDriver().findElements(By.xpath("//a [@ng-click='onItemClick()']"));
    function.get(13).findElement(By.xpath("//img [@ng-src='resources/images/slideshare-icon-small.png']")).click();

    return getFactory().create(ViewBasketSentToMePageObject.class);
}

寻求帮助