Uk.co.mmscomputing.device.twain.TwainIOException: Unable to load Twain source manager
I want to scan multiple documents via Java. I found a library of two digit calculations. When I run the example TwainExample.java
on the site, I get this error.
system info: Windows 7 Ultimate 64 bit - jre 7 32 bit
JarLib.load: Successfully loaded library [jar:file:/C:/Users/i_t_manager/
Documents/myJavaProject/JavaApplication11/build/classes/
uk.co.mmscomputing.device.twain.jar!
/uk/co/mmscomputing/device/twain/win64/jtwain.dll] from jar file location
And after pressing the source select button:
uk.co.mmscomputing.device.twain.TwainIOException: Cannot load Twain Source Manager.
Thank you for your help. my code is below.
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package uk.co.mmscomputing.device.twain.applet;
/*
A scanner plugin for ImageJ which uses the free mm computing java library
(available at http://www.mms-computing.co.uk/)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.*/
import ij.IJ;
import ij.ImagePlus;
import ij.plugin.PlugIn;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import uk.co.mmscomputing.device.scanner.Scanner;
import uk.co.mmscomputing.device.scanner.ScannerDevice;
import uk.co.mmscomputing.device.scanner.ScannerIOException;
import uk.co.mmscomputing.device.scanner.ScannerIOMetadata;
import uk.co.mmscomputing.device.scanner.ScannerListener;
import javax.swing.WindowConstants;
public class Scan_ extends JFrame implements PlugIn, ScannerListener {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JButton jButton = null;
private JButton jButton1 = null;
private Scanner scanner;
public static void main(String[] args) {
new Scan_().setVisible(true);
}
public void run(String arg0) {
new Scan_().setVisible(true);
}
/**
* This is the default constructor
*/
public Scan_() {
super();
initialize();
try {
scanner = Scanner.getDevice();
scanner.addListener(this);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setSize(300, 120);
this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
this.setResizable(false);
this.setContentPane(getJContentPane());
this.setTitle("Scan");
this.addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent e) {
}
});
}
/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.add(getJButton(), null);
jContentPane.add(getJButton1(), null);
}
return jContentPane;
}
/**
* This method initializes jButton
*
* @return javax.swing.JButton
*/
private JButton getJButton() {
if (jButton == null) {
jButton = new JButton();
jButton.setBounds(new Rectangle(4, 16, 131, 42));
jButton.setText("Select Device");
jButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
if (scanner.isBusy() == false) {
selectDevice();
}
}
});
}
return jButton;
}
/**
* This method initializes jButton1
*
* @return javax.swing.JButton
*/
private JButton getJButton1() {
if (jButton1 == null) {
jButton1 = new JButton();
jButton1.setBounds(new Rectangle(160, 16, 131, 42));
jButton1.setText("Scan");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
getScan();
}
});
}
return jButton1;
}
/* Select the twain source! */
public void selectDevice() {
try {
scanner.select();
} catch (ScannerIOException e1) {
IJ.error(e1.toString());
}
}
/* Get the scan! */
public void getScan() {
try {
scanner.acquire();
} catch (ScannerIOException e1) {
IJ.showMessage("Access denied! \nTwain dialog maybe already opened!");
// e1.printStackTrace();
}
}
public void update(ScannerIOMetadata.Type type, ScannerIOMetadata metadata) {
if (type.equals(ScannerIOMetadata.ACQUIRED)) {
ImagePlus imp = new ImagePlus("Scan", metadata.getImage());
imp.show();
metadata.setImage(null);
try {
new uk.co.mmscomputing.concurrent.Semaphore(0, true).tryAcquire(2000, null);
} catch (InterruptedException e) {
IJ.error(e.getMessage());
// e.printStackTrace();
}
} else if (type.equals(ScannerIOMetadata.NEGOTIATE)) {
ScannerDevice device = metadata.getDevice();
try {
device.setResolution(100);
} catch (ScannerIOException e) {
IJ.error(e.getMessage());
}
/*
* More options if necessary! try{
* device.setShowUserInterface(true);
* device.setShowProgressBar(true);
* device.setRegionOfInterest(0,0,210.0,300.0);
* device.setResolution(100); }catch(Exception e){
* e.printStackTrace(); }
*/
} else if (type.equals(ScannerIOMetadata.STATECHANGE)) {
// IJ.error(metadata.getStateStr());
} else if (type.equals(ScannerIOMetadata.EXCEPTION)) {
IJ.error(metadata.getException().toString());
}
}
} // @jve:decl-index=0:visual-constraint="95,130"
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1 answer
I'm very good at this ... It's just an environmental issue.
There is a solution
you can see that your driver support supports 32-bit or 64-bit (C: / windows / twain_32) or (C: / windows / twain_64). twain_32 means you must install 32-bit java or twain_64 means you must install 64-bit java environment.
Thank you
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