/*
* $Header$
* $Revision: 1.2 $
* $Date$
* ====================================================================
*
* Copyright 2002-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.MultipartPostMethod;
/**
*
* This is a Swing application that demonstrates
* how to use the Jakarta HttpClient multipart POST method
* for uploading files
*
* @author Sean C. Sullivan
* @author Michael Becke
*
*/
public class MultipartFileUploadApp {
public static void main(String[] args) {
MultipartFileUploadFrame f = new MultipartFileUploadFrame();
f.setTitle("HTTP multipart file upload application");
f.pack();
f.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
);
f.setVisible(true);
}
public static class MultipartFileUploadFrame extends JFrame {
private File targetFile;
private JTextArea taTextResponse;
private DefaultComboBoxModel cmbURLModel;
public MultipartFileUploadFrame() {
String[] aURLs = {
"http://localhost:8080/httpclienttest/fileupload"
};
cmbURLModel = new DefaultComboBoxModel(aURLs);
final JComboBox cmbURL = new JComboBox(cmbURLModel);
cmbURL.setToolTipText("Enter a URL");
cmbURL.setEditable(true);
cmbURL.setSelectedIndex(0);
JLabel lblTargetFile = new JLabel("Selected file:");
final JTextField tfdTargetFile = new JTextField(30);
tfdTargetFile.setEditable(false);
final JButton btnDoUpload = new JButton("Upload");
btnDoUpload.setEnabled(false);
final JButton btnSelectFile = new JButton("Select a file...");
btnSelectFile.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent evt) {
JFileChooser chooser = new JFileChooser();
chooser.setFileHidingEnabled(false);
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
chooser.setMultiSelectionEnabled(false);
chooser.setDialogType(JFileChooser.OPEN_DIALOG);
chooser.setDialogTitle("Choose a file...");
if (
chooser.showOpenDialog(MultipartFileUploadFrame.this)
== JFileChooser.APPROVE_OPTION
) {
targetFile = chooser.getSelectedFile();
tfdTargetFile.setText(targetFile.toString());
btnDoUpload.setEnabled(true);
}
}
}
);
taTextResponse = new JTextArea(10, 40);
taTextResponse.setEditable(false);
final JLabel lblURL = new JLabel("URL:");
btnDoUpload.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
String targetURL = cmbURL.getSelectedItem().toString();
// add the URL to the combo model if it's not already there
if (!targetURL
.equals(
cmbURLModel.getElementAt(
cmbURL.getSelectedIndex()))) {
cmbURLModel.addElement(targetURL);
}
MultipartPostMethod filePost =
new MultipartPostMethod(targetURL);
try {
appendMessage("Uploading " + targetFile.getName() + " to " + targetURL);
filePost.addParameter(targetFile.getName(), targetFile);
HttpClient client = new HttpClient();
client.setConnectionTimeout(5000);
int status = client.executeMethod(filePost);
if (status == HttpStatus.SC_OK) {
appendMessage(
"Upload complete, response=" + filePost.getResponseBodyAsString()
);
} else {
appendMessage(
"Upload failed, response=" + HttpStatus.getStatusText(status)
);
}
} catch (Exception ex) {
appendMessage("Error: " + ex.getMessage());
ex.printStackTrace();
} finally {
filePost.releaseConnection();
}
}
});
getContentPane().setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.anchor = GridBagConstraints.EAST;
c.fill = GridBagConstraints.NONE;
c.gridheight = 1;
c.gridwidth = 1;
c.gridx = 0;
c.gridy = 0;
c.insets = new Insets(10, 5, 5, 0);
c.weightx = 1;
c.weighty = 1;
getContentPane().add(lblURL, c);
c.anchor = GridBagConstraints.WEST;
c.fill = GridBagConstraints.HORIZONTAL;
c.gridwidth = 2;
c.gridx = 1;
c.insets = new Insets(5, 5, 5, 10);
getContentPane().add(cmbURL, c);
c.anchor = GridBagConstraints.EAST;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(10, 5, 5, 0);
c.gridwidth = 1;
c.gridx = 0;
c.gridy = 1;
getContentPane().add(lblTargetFile, c);
c.anchor = GridBagConstraints.CENTER;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = new Insets(5, 5, 5, 5);
c.gridwidth = 1;
c.gridx = 1;
getContentPane().add(tfdTargetFile, c);
c.anchor = GridBagConstraints.WEST;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(5, 5, 5, 10);
c.gridwidth = 1;
c.gridx = 2;
getContentPane().add(btnSelectFile, c);
c.anchor = GridBagConstraints.CENTER;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(10, 10, 10, 10);
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 2;
getContentPane().add(btnDoUpload, c);
c.anchor = GridBagConstraints.CENTER;
c.fill = GridBagConstraints.BOTH;
c.insets = new Insets(10, 10, 10, 10);
c.gridwidth = 3;
c.gridheight = 3;
c.weighty = 3;
c.gridx = 0;
c.gridy = 3;
getContentPane().add(new JScrollPane(taTextResponse), c);
}
private void appendMessage(String m) {
taTextResponse.append(m + "\n");
}
}
}