代码截取屏幕

通过java.awt.Robot的createScreenCapture截屏.

public static void captureScreen(String fileName) throws Exception {

    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Rectangle screenRectangle = new Rectangle(screenSize);
    Robot robot = new Robot();
    BufferedImage image = robot.createScreenCapture(screenRectangle);
    ImageIO.write(image, "png", new File(fileName));
}