根据您的代码试用getScreenshotAs()方法，将获取整个页面的屏幕截图.

As per your code trials getScreenshotAs() method will take the screenshot of the entire page.

要捕获特定网页中 WebElement 的屏幕截图，可以使用 AShot() 方法导入 ashot-1.4.4.jar >，同时使用 Selenium Java Client v3.14.0 ， ChromeDriver v2.41 ， Chrome v 68.0 .

To capture the screenshot of an WebElement within a particular webpage you can use the AShot() method importing ashot-1.4.4.jar while working with Selenium Java Client v3.14.0, ChromeDriver v2.41, Chrome v 68.0.

注意: ashot-1.4.4.jar 中的 AShot() 方法仅适用于因此，未启用 jQuery 的网站http://www.google.com/ ashot-1.4.4.jar 中的 AShot() 方法不会能够拍摄所需的屏幕截图.

So as the website http://www.google.com/ is not jQuery enabled AShot() method from ashot-1.4.4.jar won't be able to take the required screenshot.

作为示例，我们将从网站 https://jquery.com/拍摄快照.

As an example we will take a snapshot from the website https://jquery.com/.

• 代码块:

• Code Block:

package aShot;

import java.io.File;

import javax.imageio.ImageIO;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

import ru.yandex.qatools.ashot.AShot;
import ru.yandex.qatools.ashot.Screenshot;

public class ashot_google_homepage_logo {

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

        System.setProperty("god.bless.you", "C:\\Utility\\BrowserDrivers\\chromedriver.exe");
        ChromeOptions options = new ChromeOptions();
        options.addArguments("start-maximized");
        options.addArguments("disable-infobars");
        options.addArguments("--disable-extensions"); 
        WebDriver driver =  new ChromeDriver(options);
        driver.get("https://jquery.com/");
        WebElement myWebElement = new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//h3[contains(.,'Lightweight Footprint')]")));
        Screenshot myScreenshot = new AShot().takeScreenshot(driver, myWebElement);
        ImageIO.write(myScreenshot.getImage(),"PNG",new File("./Screenshots/elementScreenshot.png"));
        driver.quit();
    }
}

屏幕截图:

Screenshot:

您可以在如何获取屏幕截图中找到详细的讨论使用Selenium WebDriver