java如何实现录屏_运维文库_资讯中心

发布时间:2026-04-28 16:02:05

阅读量:4

在Java中实现录屏功能，可以使用Java的java.awt.Robot类来捕获屏幕内容，并使用java.io.FileOutputStream将录制的视频保存到本地。以下是一个简单的示例代码：

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.sound.sampled.*;

public class ScreenRecorder {
    private static final int FRAME_RATE = 30; // 帧率
    private static final int WIDTH = 1280; // 宽度
    private static final int HEIGHT = 720; // 高度
    private static long startTime; // 开始时间
    private static Robot robot; // Robot对象
    private static Rectangle screenRect; // 屏幕尺寸
    private static BufferedImage buffer; // 缓冲图像
    private static FileOutputStream fos; // 视频输出流
    private static AudioFormat audioFormat; // 音频格式
    private static TargetDataLine targetDataLine; // 音频数据行

    public static void main(String[] args) {
        try {
            startTime = System.currentTimeMillis();
            screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
            robot = new Robot();
            buffer = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
            fos = new FileOutputStream("screen_record.mp4");
            audioFormat = new AudioFormat(16000, 16, 2, true, true);
            DataLine.Info info = new DataLine.Info(TargetDataLine.class, audioFormat);
            targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
            targetDataLine.open(audioFormat);
            targetDataLine.start();

            Timer timer = new Timer();
            timer.scheduleAtFixedRate(new RecordTask(), 0, 1000 / FRAME_RATE);
        } catch (AWTException | IOException | LineUnavailableException e) {
            e.printStackTrace();
        }
    }

    private static class RecordTask extends TimerTask {
        @Override
        public void run() {
            try {
                // 捕获屏幕内容
                Graphics g = buffer.getGraphics();
                g.setColor(Color.BLACK);
                g.fillRect(0, 0, WIDTH, HEIGHT);
                g.drawImage(robot.createScreenCapture(screenRect), 0, 0, null);

                // 保存屏幕内容到文件
                ImageIO.write(buffer, "png", fos);

                // 捕获音频
                byte[] audioBytes = new byte[targetDataLine.getBufferSize()];
                int bytesRead = targetDataLine.read(audioBytes, 0, audioBytes.length);

                // 保存音频到文件
                if (bytesRead > 0) {
                    fos.write(audioBytes, 0, bytesRead);
                }
            } catch (AWTException | IOException e) {
                e.printStackTrace();
            }
        }
    }
}