Java 如何使用selenium web驱动程序自动化youtube？

我只是尝试使用SeleniumWeb驱动程序自动“下载youtube视频”。但它不起作用。在这里，我只是打开一个youtube视频并复制它的URL。然后我将该URL粘贴到另一个页面的“SaveItOffline”选项卡中，然后单击下载。但是URL没有被复制。这是我的密码

    import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.interactions.Actions;`enter code here`
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.Keys;
public class Download {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
    System.setProperty("webdriver.chrome.driver","C:/Users/vairavan/Desktop/SELENIUM/chrome driver/chromedriver.exe");
    WebDriver driver=new ChromeDriver();
    driver.manage().timeouts().implicitlyWait(10,TimeUnit.SECONDS);
    driver.get("http://www.youtube.com");
    driver.findElement(By.id("search")).click();
    driver.findElement(By.id("search")).sendKeys("short flute cover");
    driver.findElement(By.id("search")).sendKeys(Keys.ENTER);
    driver.findElement(By.id("dismissable")).click();
    Actions action=new Actions(driver);
    action.contextClick(driver.findElement(By.xpath("/html/body/ytd-app/div[1]/ytd-page-manager/ytd-watch/div[2]/div[1]/div[1]/ytd-player/div/div[1]/video"))).perform();
    driver.findElement(By.xpath("/html/body/div[6]/div/div/div[1]/div[1]")).click();
    driver.get("htttp://www.saveitoffline.com/");
    driver.findElement(By.id("url-input")).sendKeys(Keys.CONTROL+"v");
    driver.findElement(By.id("submit-url")).click();
    driver.findElement(By.xpath("/html/body/section/div[3]/div/div[1]/div[2]/div")).click();
    driver.findElement(By.id("download-href")).click();

    }



}

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请使用剪贴板粘贴url，它对我有效：

Toolkit toolkit = Toolkit.getDefaultToolkit();
Clipboard clipboard = toolkit.getSystemClipboard();
String data = (String) clipboard.getData(DataFlavor.stringFlavor);
webDriver.findElement(By.id("url-input")).sendKeys(data);