如何使用 Selenium WebDriver 和 Java 来获取可滚动网页的整页屏幕截图？

现有代码仅截取可见屏幕的屏幕截图。我正在使用Chromedriver.

  System.setProperty("webdriver.chrome.driver", "D:/chromedriver/chromedriver.exe");
  WebDriver driver = new ChromeDriver();
  driver.get("http://www.bbc.com");       
  driver.manage().window().maximize();
  System.out.println(driver.getTitle());
  File scrFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
  FileUtils.copyFile(scrFile, new File("D:/chromedriver/scr3.png"));
  driver.close();

请找到下面的代码，您可以滚动并截图任意数量。请注意elements网页元素。存储它们并相对滚动。 您可以根据需要的屏幕截图数量进行滚动。

driver.get("http://www.bbc.com");       
driver.manage().window().maximize();
System.out.println(driver.getTitle());
File scrFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(scrFile, new File("D:/chromedriver/scr3.png"));  
WebElement elements = driver.findElement(By.xpath(".//*[@id='page']/section[6]/div/div/div[1]/ul/li[3]/div/div[2]/h3/a"));    
Thread.sleep(3000L);
JavascriptExecutor js = (JavascriptExecutor) driver;
int yPosition = elements.getLocation().getY();
js.executeScript("window.scroll (0, " + yPosition + ") ");       
Thread.sleep(3000L);         
File scrFile1 = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(scrFile1, new File("D:/chromedriver/scr4.png"));
driver.close();