Q:我想用Java开发一个程序，直接从扫描仪获得扫描数据，然后上载到服务器上，这样的程序需要利用那些知识点（有关Java）？
RE:
javatwain may be a powerful solution,you can go to www.gnome.sk to download the newest package.
JavaTwain version 5.1 is a part of the Morena 6.0 Framework now.
below is an simple example:
/*
* $Id: ExampleShow.java,v 1.5 2002/07/15 13:48:55 mmotovsk EXP $
*
* Copyright (c) 1999-2002 Gnome spol. s r.o. All Rights Reserved.
*
* This software is the confidential and proprietary information of
* Gnome spol. s r.o. You shall not disclose sUCh Confidential
* Information and shall use it only in accordance with the terms
* of the license agreement you entered into with Gnome.
*/
// JavaTwain package version 5.1
/**
ExampleShow demonstrates how to scan an image using defaults
from the Twain source.
*/
import java.awt.*;
import java.awt.event.*;
import SK.gnome.twain.*;
public class ExampleShow extends Frame
{ Image image;
public void paint(Graphics g)
{ if (null!=image)
g.drawImage(image, 0, 0, this);
}
WindowListener windowAdapter=new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{ System.exit(0);
}
};
public ExampleShow()
{ try
{ addWindowListener(windowAdapter);
setTitle("ExampleShow Frame Application");
// Open TWAIN select source dialog box
// and initialize the source selected by the user.
TwainSource source=TwainManager.selectSource(null);
image=Toolkit.getDefaultToolkit().createImage(source);
// wait for the image to be completed
MediaTracker tracker=new MediaTracker(this);
tracker.addImage(image, 0);
// this is the moment the scanner user interface pops up
System.err.println("Start loading image ...");
try
{ tracker.waitForAll();
}
catch (InterruptedException e)
{ System.err.println("Image loading was interrupted!");
e.printStackTrace();
}
tracker.removeImage(image);
System.err.println("Image loaded ...");
setSize(image.getWidth(this), image.getHeight(this));
setVisible(true);
TwainManager.close();
}
catch (TwainException e)
{ e.printStackTrace();
}
}
public static void main(String[] args)
{ new ExampleShow();
}
}
