Java实现截屏功能

 

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.Random;
import javax.imageio.ImageIO;

public class CaptureScreen {

    //图片格式
    public static final String format = "png";
    //图片保存路径
    public static final String filepath = "e:\\test";

    public static void captureScreen(String fileName, String folder) throws Exception {
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

        Rectangle screenRectangle = new Rectangle(screenSize);
        //设置起使坐标 x,y 及截屏长度和宽度 width,height
        screenRectangle.setBounds(0, 0, 300, 300);

        Robot robot = new Robot();

        BufferedImage image = robot.createScreenCapture(screenRectangle);
        //保存路径
        File screenFile = new File(fileName);
        if (!screenFile.exists()) {
            screenFile.mkdir();
        }
        File f = new File(screenFile, folder);
        ImageIO.write(image, format, f);
        //自动打开
        if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.OPEN)) {
            Desktop.getDesktop().open(f);
        }

    }

    public static void main(String[] args) {
        try {

            File file = new File(filepath);
            if(! file.exists()){
                file.mkdir();
            }

            Random random = new Random();
            String filename = random.nextInt(20) + ".png";

            captureScreen(filepath, filename);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}