如何使用createScreenCapture仅捕获所需的屏幕部分

Question

以下代码捕获屏幕：

import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;


public class capture{
    public static void main(String args[]) { 

        try { 
            Dimension size = Toolkit.getDefaultToolkit().getScreenSize(); 
            Robot robot = new Robot(); 
            BufferedImage img = robot.createScreenCapture(new Rectangle(size)); 
        } catch(Exception e) { 
        } 

    }
}

有没有办法只捕获屏幕的所需部分（例如矩形，从一个x，y点到另一个点）？

Answer 1

您可以设置左上角的x和y，以及矩形的宽度和高度尺寸，如下所示：

BufferedImage img = robot.createScreenCapture( new Rectangle(x, y, width, height) );

Answer 2

import java.awt.AWTException;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

/**
 * This program demonstrates how to capture screenshot of a portion of screen.
 * 
 *
 */
public class TaskBarCaptureImage {

    public static void main(String[] args) {
        try {
            Robot robot = new Robot();
            String format = "jpg";
            String fileName = "TaskBar Captured." + format;

            Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
            System.out.println("ScreenSize : " + screenSize);
            Rectangle captureRect = new Rectangle(0, 728, 1366, 40); // taskbar
                                                                        // zone

            BufferedImage screenFullImage = robot.createScreenCapture(captureRect);
            ImageIO.write(screenFullImage, format, new File(fileName));
            int no = 1;
            ImageIO.write(screenFullImage, format, new File("./imagenes/" + no + ".png"));


            System.out.println("TaskBar Captured!");
        } catch (AWTException | IOException ex) {
            System.err.println(ex);
        }
    }

}