这篇文章主要介绍了java如何实现摄像头截图功能,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
具体内容如下
本来sun有个jmf组件可以很方便的实现摄像头截图的,不过这版本后来停止更新了,当前官网最新版本为Java Media Framework (JMF) 2.1.1e,下载回来,在windows 7 32位上使用,居然不能运行,网上另外找了个jmf的替代框架fmj使用,截图实现代码:
package com.pengo.capture; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.Graphics2D; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.media.MediaLocator; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextField; import net.sf.fmj.ui.application.CaptureDeviceBrowser; import net.sf.fmj.ui.application.ContainerPlayer; import net.sf.fmj.ui.application.PlayerPanelPrefs; public class CameraFrame extends JFrame{ private static int num = 0; public CameraFrame() throws Exception{ this.setTitle("摄像头截图应用"); this.setSize(480, 500); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); final JPanel cameraPanel = new JPanel(); this.getContentPane().setLayout(new BorderLayout()); this.getContentPane().add(cameraPanel, BorderLayout.CENTER); ContainerPlayer containerPlayer = new ContainerPlayer(cameraPanel); MediaLocator locator = CaptureDeviceBrowser.run(null); //弹出摄像头设备选择 // MediaLocator locator = null; // GlobalCaptureDevicePlugger.addCaptureDevices(); // Vector vectorDevices = CaptureDeviceManager.getDeviceList(null); // if (vectorDevices == null || vectorDevices.size() == 0) // { // System.out.println("没有摄像头==="); // return; // } // //选择第一个摄像头设备 // for ( int i = 0; i < vectorDevices.size(); i++ ) // { // CaptureDeviceInfo infoCaptureDevice = (CaptureDeviceInfo) vectorDevices.get(i); // System.out.println("设备名===============" + infoCaptureDevice.getName()); // //选择第一个设备为程序使用,如果存在多个设备时,则第一个可能不是摄像头 // locator = infoCaptureDevice.getLocator(); // break; // } PlayerPanelPrefs prefs = new PlayerPanelPrefs(); containerPlayer.setMediaLocation(locator.toExternalForm(), prefs.autoPlay); JPanel btnPanel = new JPanel(new BorderLayout()); final JTextField path = new JTextField("E:\\camera"); path.setColumns(30); btnPanel.add(path, BorderLayout.WEST); JButton okBtn = new JButton("截图"); okBtn.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Dimension imageSize = cameraPanel.getSize(); BufferedImage image = new BufferedImage(imageSize.width, imageSize.height, BufferedImage.TYPE_INT_ARGB); Graphics2D g = image.createGraphics(); cameraPanel.paint(g); g.dispose(); try { String filePath = path.getText(); File file = new File(filePath); if(file.exists() == false){ file.mkdirs(); } ImageIO.write(image, "png", new File(file.getAbsolutePath() + "/" + num + ".png")); num++; } catch (IOException ex) { ex.printStackTrace(); } } }); btnPanel.add(okBtn, BorderLayout.EAST); this.getContentPane().add(btnPanel, BorderLayout.SOUTH); } public static void main(String[] args) throws Exception{ CameraFrame camera = new CameraFrame(); camera.setVisible(true); } }
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