java操作摄像头截图

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);      }  }