How to use selenium to take screenshots and generate images

When you need to save images on a web page locally, use web page screenshots.

Because the driver provided by the selenium jar package simulates page operations, there is no right-click attribute. You can save the image to the local area by simulating a right-click of the mouse. Not only are the steps complicated, but also need to introduce other jar packages. Personally, I think there is no need to go to a lot of trouble. Using the selenium jar package TakesScreenshot attribute to take screenshots can also achieve the purpose of generating images.

Operation steps:

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 1 获取图片元素，得到图片位置和大小
WebElement imgElement = driver.findElement(By.id("img"));
Point location = webElement.getLocation(); 
//  获得位置。
Dimension size = webElement.getSize(); // 
大小

2 创建全屏截图，通过ImageIo 读取形式
TakesScreenshot takesScreenshot = (TakesScreenshot) driver;
BufferedImage originalImage = ImageIO.read(new ByteArrayInputStream(takesScreenshot.getScreenshotAs(OutputType.BYTES)));

3 截取图片，生成BufferedImage
 BufferedImage croppedImage = originalImage.getSubimage( location.getX(), location.getY(), size.getWidth(), size.getHeight());

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4  本地生成图片
String fileUrl = ""; // 图片路径

File file = new File(fileUrl);
ImageIO.write(croppedImage , "png", file);  // 内容写入

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