/*
* $Header$
* $Revision$
* $Date$
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "HttpClient", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* 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
* .
*
* [Additional notices, if required by prior licensing conditions]
*
*/
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.text.BadLocationException;
import javax.swing.text.html.HTMLDocument;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
import org.apache.commons.httpclient.methods.GetMethod;
/**
* A simple Swing application that demonstrates how to use the Jakarta
* HttpClient API. This application loads HTML from servers and displays the
* content as text and as rendered HTML.
*
* @author Sean C. Sullivan
* @author Ortwin Glück
* @author Michael Becke
*/
public class ClientApp {
public static void main(String[] args) {
HttpClientFrame f = new HttpClientFrame();
f.setTitle("HttpClient demo application");
f.setSize(700, 500);
f.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
);
f.setVisible(true);
}
public static class HttpClientFrame extends JFrame {
private JComboBox cmbURL;
private JTextArea taTextResponse;
private JEditorPane htmlPane;
private HttpClient client;
public HttpClientFrame() {
client = new HttpClient(new MultiThreadedHttpConnectionManager());
client.setConnectionTimeout(30000);
JPanel panInput = new JPanel(new FlowLayout());
String[] aURLs = {
"http://www.apache.org/",
"http://www.google.com/",
"http://www.opensource.org/",
"http://www.anybrowser.org/",
"http://jakarta.apache.org/",
"http://www.w3.org/"
};
final JButton btnGET = new JButton("GET");
btnGET.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent ae) {
String url = (String) cmbURL.getSelectedItem();
if (url != null && url.length() > 0) {
loadPage(url);
}
}
}
);
cmbURL = new JComboBox(aURLs);
cmbURL.setToolTipText("Enter a URL");
cmbURL.setEditable(true);
cmbURL.setSelectedIndex(0);
JLabel lblURL = new JLabel("URL:");
panInput.add(lblURL);
panInput.add(cmbURL);
panInput.add(btnGET);
taTextResponse = new JTextArea();
taTextResponse.setEditable(false);
taTextResponse.setCaretPosition(0);
htmlPane = new JEditorPane();
htmlPane.setContentType("text/html");
htmlPane.setEditable(false);
JSplitPane splitResponsePane = new JSplitPane(
JSplitPane.HORIZONTAL_SPLIT,
new JScrollPane(taTextResponse),
new JScrollPane(htmlPane)
);
splitResponsePane.setOneTouchExpandable(false);
splitResponsePane.setDividerLocation(350);
// it would be better to set resizeWeight, but this method does
// not exist in JRE 1.2.2
// splitResponsePane.setResizeWeight(0.5);
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(panInput, BorderLayout.NORTH);
this.getContentPane().add(splitResponsePane, BorderLayout.CENTER);
}
/**
* Sets the HTML content to be displayed.
*
* @param content an HTML document
*/
private void setDocumentContent(String content) {
HTMLDocument doc = new HTMLDocument();
try {
doc.remove(0, doc.getLength());
} catch (BadLocationException e) {
e.printStackTrace();
}
doc.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
try {
htmlPane.read(new ByteArrayInputStream(content.getBytes()), doc);
} catch (IOException e) {
e.printStackTrace();
}
htmlPane.setDocument(doc);
htmlPane.setCaretPosition(0);
taTextResponse.setText(content);
taTextResponse.setCaretPosition(0);
taTextResponse.requestFocus();
}
/**
* Loads the page at the given URL from a separate thread.
* @param url
*/
private void loadPage(final String url) {
// create a new thread to load the URL from
new Thread() {
public void run() {
GetMethod get = new GetMethod(url);
get.setFollowRedirects(true);
try {
int iGetResultCode = client.executeMethod(get);
final String strGetResponseBody = get.getResponseBodyAsString();
if (strGetResponseBody != null) {
// set the HTML on the UI thread
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
setDocumentContent(strGetResponseBody);
}
}
);
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
get.releaseConnection();
}
}
}.start();
}
}
}
