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package edu.ctgu.JTwacker;
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import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JToolBar;
import javax.swing.SwingUtilities;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import edu.ctgu.twain.JTwain;
/*
这是显示扫描图片的frame
*/
public class JTwacker extends JFrame {
class JPEGPanel extends JPanel {
/** Image for the inner class
*/
protected BufferedImage mJPEGPanelBufferedImage;
/** Pnale to diaply the image
*/
public JPEGPanel() {
// no op
}
/** Sets the bufferedimage into the class
* @param bi BufferedImage
*/
public void setBufferedImage(BufferedImage bi) {
if (bi == null) {
return;
}
mJPEGPanelBufferedImage = bi;
Dimension d = new Dimension(mJPEGPanelBufferedImage.getWidth(this),
mJPEGPanelBufferedImage.getHeight(this));
setPreferredSize(d);
revalidate();
repaint();
}
/** Paints the component.
* @param g Graphics object used for the painting
*/
public void paintComponent(Graphics g) {
super.paintComponent(g);
Dimension d = getSize();
g.setColor(getBackground());
g.fillRect(0, 0, d.width, d.height);
if (mJPEGPanelBufferedImage != null) {
g.drawImage(mJPEGPanelBufferedImage, 0, 0, this);
}
}
}
protected JPEGPanel mJpegPanel;
protected BufferedImage mBufferedImage;
protected JComboBox mSourcesCombo;
protected JToolBar mToolBar;
/** Constructor
*/
public JTwacker() {
super("测试");
mJpegPanel = new JPEGPanel();
JScrollPane ps = new JScrollPane(mJpegPanel,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
getContentPane().add(ps, BorderLayout.CENTER);
WindowListener wndCloser = new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
};
addWindowListener(wndCloser);
mToolBar = new JToolBar("Twain");
mToolBar.setFloatable(false);
addButtons();
getContentPane().add(mToolBar, BorderLayout.NORTH);
setSize(800, 600);
/* Center the frame */
Dimension screenDim = Toolkit.getDefaultToolkit().getScreenSize();
Rectangle frameDim = getBounds();
setLocation(
(screenDim.width - frameDim.width) / 2,
(screenDim.height - frameDim.height) / 2
);
setVisible(true);
}
protected void addButtons(){
JButton _ab = new JButton("扫描");
_ab.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
acquireImage();
}
});
mToolBar.add(_ab);
mToolBar.addSeparator();
if (edu.ctgu.twain.JTwain.getInstance().isTwainAvailble()) {
String[] twainSources = JTwain.getInstance().getAvailableSources();
if (twainSources != null) {
mSourcesCombo = new JComboBox(twainSources);
} else {
mSourcesCombo = new JComboBox();
mSourcesCombo.addItem("NONE AVAILABLE");
}
} else {
mSourcesCombo = new JComboBox();
mSourcesCombo.addItem("NONE AVAILABLE");
}
mToolBar.add(mSourcesCombo);
}
protected void acquireImage() {
if (JTwain.getInstance().isTwainAvailble()){
if (mSourcesCombo.getItemCount() 0 ){
String _source = (String)mSourcesCombo.getSelectedItem();
if (_source != null){
String _filename = JTwain.getInstance().acquire(_source);
System.out.println(_filename);
if (_filename != null _filename.length() 0) {
File fChoosen = new File(_filename);
// savetofile(fChoosen);
showImage(fChoosen);
} else {
System.out.println("哎呀，怎么出错了！");
}
} // end if
} // end if
} // end if
}
protected void showImage(final File file) {
if (file == null || !file.exists()) {
return;
}
setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
Thread runner = new Thread() {
public void run() {
try {
FileInputStream in = new FileInputStream(file);
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
mBufferedImage = decoder.decodeAsBufferedImage();
in.close();
SwingUtilities.invokeLater( new Runnable() {
public void run() {
reset();
}
});
}
catch (Exception ex) {
ex.printStackTrace();
}
setCursor(Cursor.getPredefinedCursor( Cursor.DEFAULT_CURSOR));
}
};
runner.start();
}
//把扫描得到的图片保存为文件，然后上传到服务器或保存到数据库中
protected void savetofile(final File file) {
try {
File mfile=new File("c:\\dd.jpg");
if (mfile.exists()) {
mfile.delete();
}else {
file.renameTo(mfile);
}
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
protected void reset() {
if (mBufferedImage != null) {
mJpegPanel.setBufferedImage(mBufferedImage);
}
}
public static void main(String argv[]) {
new JTwacker();
}
}
-------------------------
package edu.ctgu.twain;
/*
这是调用动态链接库的类
*/
public class JTwain {
private static final JTwain mInstance = new JTwain();
protected final String DLL_NAME = "jtwain";
private JTwain() {
initLib();
}
public static JTwain getInstance(){
return mInstance;
}
public native boolean isTwainAvailble();
public native String[] getAvailableSources();
public native String acquire();
public native String acquire(String sourceName);
private void initLib(){
try {
System.loadLibrary(DLL_NAME);
}catch(Exception e) {
e.printStackTrace();
}
finally {
// System.out.println("Loading : " + DLL_NAME + ".dll");
}
}
}
下面是一个解决方案 , 用到 Morena 6.0 Framework 框架 里的 javaTwain功能 , 貌似搜了一下
好像要收费的,不过你可以找找是否有破解版的,没有的话,那就只有走偏门了 看是否能通过反编译 ,看改源代码了......
RE:
javatwain may be a powerful solution,you can go to 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();
}
}
Scanner是jdk1.5新增的一个类，使用该类可创建一个对象，Scanner scan=new Scanner(System.in);意思是声明一个Scanner类的对象,并实例化，system.in即接收键盘输入。
下载一个jar包，放在lib目录下面，然后再把这个jar加入到项目里面就可以了，右键add as libary,就可以引用源代码了
import java.util.Scanner;
public class Tese1{
{
public static void main ( String[] args )
{
Scanner in = new Scanner (System.in);
System.out.println ("请输入你的姓名");
String name = in.next ();
System.out.println ("姓名：" + name);
System.out.println ("请输入你的年龄");
int age = in.nextInt ();
System.out.println ("年龄：" + age);
System.out.println ("请输入你的性别");
String xb = in.next ();
System.out.println ("性别:" + xb);
in.close ();
}
}