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   源码介绍

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原理：客户端将采集到的每一帧图像数据发送至服务器，服务器接收

/*
*   @version 1.2 2012-06-29
*   @author wanghai
*/

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;

import javax.imageio.*;
import javax.swing.*;
import java.net.Socket;
import java.net.ServerSocket;

/**
*在服务器开启情况下，启动客户端，创建套接字接收图像
*/

public class ImageServer {	
    public static ServerSocket ss = null;
    
    public static void main(String args[]) throws IOException{    
    	ss = new ServerSocket(6000);
        
        final ImageFrame frame = new ImageFrame(ss);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
       
        while(true){
        	frame.panel.getimage();
            frame.repaint();
        }        
    }
       
}

/** 
    A frame with an image panel
*/
@SuppressWarnings("serial")
class ImageFrame extends JFrame{
	public ImagePanel panel;
	public JButton jb;
   
    public ImageFrame(ServerSocket ss){
   	    // get screen dimensions   	   
   	    Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension screenSize = kit.getScreenSize();
        int screenHeight = screenSize.height;
        int screenWidth = screenSize.width;

        // center frame in screen
        setTitle("ImageTest");
        setLocation((screenWidth - DEFAULT_WIDTH) / 2, (screenHeight - DEFAULT_HEIGHT) / 2);
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

        // add panel to frame
        this.getContentPane().setLayout(null);
        panel = new ImagePanel(ss);
        panel.setSize(640,480);
        panel.setLocation(0, 0);
        add(panel);
        jb = new JButton("拍照");
        jb.setBounds(0,480,640,50);
        add(jb);
        saveimage saveaction = new saveimage(ss);
        jb.addActionListener(saveaction);
    }

    public static final int DEFAULT_WIDTH = 640;
    public static final int DEFAULT_HEIGHT = 560;  
}

/**
   A panel that displays a tiled image
*/
@SuppressWarnings("serial")
class ImagePanel extends JPanel {     
    private ServerSocket ss;
    private Image image;
    private InputStream ins;
	 
    public ImagePanel(ServerSocket ss) {  
	    this.ss = ss;
    }
    
    public void getimage() throws IOException{
    	Socket s = this.ss.accept();
        System.out.println("连接成功!");
        this.ins = s.getInputStream();
		this.image = ImageIO.read(ins);
		this.ins.close();
    }
   
    public void paintComponent(Graphics g){  
        super.paintComponent(g);    
        if (image == null) return;
        g.drawImage(image, 0, 0, null);
    }

}

class saveimage implements ActionListener {
	RandomAccessFile inFile = null;
	byte byteBuffer[] = new byte[1024];
	InputStream ins;
	private ServerSocket ss;
	
	public saveimage(ServerSocket ss){
		this.ss = ss;
	}
	
	public void actionPerformed(ActionEvent event){
        try {
			Socket s = ss.accept();
			ins = s.getInputStream();
			
			// 文件选择器以当前的目录打开
	        JFileChooser jfc = new JFileChooser(".");
	        jfc.showSaveDialog(new javax.swing.JFrame());
	        // 获取当前的选择文件引用
	        File savedFile = jfc.getSelectedFile();
	        
	        // 已经选择了文件
	        if (savedFile != null) {
	            // 读取文件的数据，可以每次以快的方式读取数据
	            try {
					inFile = new RandomAccessFile(savedFile, "rw");
				} catch (FileNotFoundException e) {
					e.printStackTrace();
				}
	        }

            int amount;
            while ((amount = ins.read(byteBuffer)) != -1) {
                inFile.write(byteBuffer, 0, amount);
            }
            inFile.close();
            ins.close();
            s.close();
            javax.swing.JOptionPane.showMessageDialog(new javax.swing.JFrame(),
                    "已接保存成功", "提示!", javax.swing.JOptionPane.PLAIN_MESSAGE);
		} catch (IOException e) {

			e.printStackTrace();
		}
	}
}