B/S架构的摄像头控制是完全可以的，小弟做过这个工作。附上源代码，有很多地方没有修改，不过绝对可以运行的，如果需要保存可以使用数字证书打包，
package com.etong.util.webVideo;
import javax.swing.*;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import javax.media.*;
import javax.media.format.*;
import javax.media.util.*;
import javax.media.control.*;
import java.applet.Applet;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import jmapps.util.*;
import com.sun.image.codec.jpeg.*;
import javax.media.protocol.DataSource;
import java.applet.AppletContext;
public class WebCang extends JApplet implements ActionListener {
public static Player player = null;
private CaptureDeviceInfo di = null;
private MediaLocator ml = null;
String insid = null;
String taxpayerid = null;
String affID = null;
String affname = null;
String wfid = null;
String username = null;
String host = null;
String aid = null;
String tid = null;
int xx = 0;
private JButton capture = null;
private JButton save = null;
private JButton open = null;
private JButton close = null;
private JTextField num = null;
private Buffer buf = null;
private Image img = null;
private Image img2 = null;
// private VideoFormat vf = null;
private BufferToImage btoi = null;
private ImagePanel imgpanel = null;
private int rectX;
private int rectY;
private int rectWidth = 320;
private int rectHeight = 240;
private int imgWidth = 320;
private int imgHeight = 240;
private String fname = ”工作流附件程序”;
public void init() {
insid = this.getParameter(“insid”);
taxpayerid = this.getParameter(“taxpayerid”);
affID = this.getParameter(“affID”);
affname = this.getParameter(“affname”);
wfid = this.getParameter(“wfid”);
username = this.getParameter(“username”);
host = this.getParameter(“host”);
aid = this.getParameter(“aid”);
tid = this.getParameter(“tid”);
setLayout(new BorderLayout());
setSize(320, 240);
imgpanel = new ImagePanel();
imgpanel.addMouseMotionListener(imgpanel);
capture = new JButton(“拍照”);
capture.addActionListener(this);
save = new JButton(“上传该附件”);
save.addActionListener(this);
open = new JButton(“打开拍照”);
open.addActionListener(this);
close = new JButton(“关闭拍照”);
close.addActionListener(this);
//num = new JTextField();
String str1 = ”vfw:Logitech USB Video Camera:0″;
String str2 = ”vfw:Microsoft WDM Image Capture (Win32):0″;
//从驱动管理器中获取驱动,一般使用MicroOS默认的驱动，str1为罗技的摄像头驱动
di = CaptureDeviceManager.getDevice(str2);
//获得本地媒体源
ml = di.getLocator();
try {
//通过获取的本地源建立播放者对象
DataSource dataSource;
//player对象可以使用Manager.createRealizedPlayer(di.getLocator())直接构造，
//player = Manager.createRealizedPlayer(di.getLocator());
dataSource = JMFUtils.createCaptureDataSource(null, null, str2,
di.getFormats()[4]);
//如果自行设置格式应当使用DataSource对象构建，其中DataSource对象位置为javax.media.protocol.DataSource;
player = Manager.createRealizedPlayer(dataSource);
//播放者开始播放
player.start();
Panel panelx2 = new Panel(new GridLayout(1, 2));
Component comp;
if ((comp = player.getVisualComponent()) != null) {
//增加播放源在窗口上
panelx2.add(comp);
comp.setSize(new Dimension(640, 480));
}
Panel panelx = new Panel(new GridLayout(1, 7));
Panel panel1 = new Panel(new BorderLayout());
panelx.add(new Panel());
panelx.add(capture);
panelx.add(new Panel());
panelx.add(save);
panelx.add(new Panel());
panel1.add(new Label(), BorderLayout.WEST);
//panel1.add(num, BorderLayout.CENTER);
//panelx.add(open);
panelx.add(close);
panelx.add(new Panel());
panel1.add(panelx2, BorderLayout.NORTH);
panel1.add(panelx, BorderLayout.SOUTH);
add(panel1, BorderLayout.CENTER);
panelx2.add(imgpanel);
//add(panelx2,BorderLayout.NORTH);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws ClassNotFoundException {
try {
URL url = new URL(
”http://webserver:7001/Workflow/servlet/WebCang”);
URLConnection urlConn = url.openConnection();
urlConn.setUseCaches(false);
urlConn.setDefaultUseCaches(false);
} catch (MalformedURLException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void playerclose() {
player.close();
player.deallocate();
}
public void actionPerformed(ActionEvent e) {
JComponent c = (JComponent) e.getSource();
if (c == capture) { // 抓取当前frame
FrameGrabbingControl fgc = (FrameGrabbingControl) player
.getControl(
”javax.media.control.FrameGrabbingControl”);
//public Control getControl(java.lang.String forName)获得由forName类型的control或接口interface
buf = fgc.grabFrame();
//public Buffer grabFrame(),获取当前祯
btoi = new BufferToImage((VideoFormat) buf.getFormat());//转化流格式
//public BufferToImage(VideoFormat format),为指定格式的图象变换对象实例化一个缓冲区
img = btoi.createImage(buf); // 显示抓取图片
//public java.awt.Image createImage(Buffer buffer)，
//将输入流转换成一个标准的AWT格式的图象，并且返回这个图象。
imgpanel.setImage(img); // 设置imgpanel图片属性
img2 = img;
//new File(“c:/load/WorkflowPhoto/temp.jpg”).delete();
JOptionPane.showMessageDialog(this,”拍照成功”,”操作提示”,0);
} else if (c == save) {
if (img != null) {
//fname = !num.getText().equals(“”) ? num.getText() : ”temp”;
fname = ”temp”;
xx++;
saveJPG(img2, ”c:/WorkflowPhoto/” , fname+ xx + “.jpg”);
//WebCangFile.saveJPG(img,”f:/”+ fname + ”.jpg”);
}
}else if (c == close){
player.close();
JOptionPane.showMessageDialog(this,”拍照程序已经关闭，如需再次使用请关闭窗口，重新开启！”,”操作提示”,0);
}