spyserver.java

一个基于JAVA TCP 的远程监视的小程序

package TCPSpy;

import com.sun.image.codec.jpeg.*;    
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.net.*;    
import java.io.*;

public   class   SpyServer   extends   Thread  
{ 
  private   Socket client=null;  
  private   OutputStream   out   =   null;   
  private   ByteArrayOutputStream   output   =   null;   
  private   JPEGEncodeParam   param   =   null;   
  private   JPEGImageEncoder   encoder   =   null;
  private   Dimension  dimension = Toolkit.getDefaultToolkit().getScreenSize();
  private   BufferedImage screenshot = null;
  
  public   SpyServer(int port) throws IOException 
  {   
      ServerSocket socket = new ServerSocket(port);
      client=socket.accept();
  }   
    
    @Override
  public   void   run   ()   {
  try   
  {   
  output   =   new   ByteArrayOutputStream();   
  out=client.getOutputStream();
  while(true)
   {
    screenshot = (new Robot()).createScreenCapture(new Rectangle(0,0,(int)dimension.getWidth(),(int)dimension.getHeight()));  
    param   =   JPEGCodec.getDefaultJPEGEncodeParam(screenshot);   
    encoder   =   JPEGCodec.createJPEGEncoder(output,   param);   
    encoder.encode(screenshot);  
    output.writeTo(out);   
    out.flush(); 
    output.reset();   
     Thread.sleep(20);
    }
  }   
  catch   (Exception   ex)   
  {   
          ex.printStackTrace();   
   }   
 try   
   {    
    out.close();   
    encoder.getOutputStream().close(); 
   }   
  catch   (Exception   ex)   
   {   
      ex.printStackTrace();   
   }   
  }
    
  public   static   void   main(String[]   args)   throws   Exception   {
          new SpyServer(2222).start();
  }   
}