A Client to Send SMTP Mail
import java.awt.*;
import javax.swing.*;
public class SendMail extends javax.swing.JFrame {
/**
* The constructor. Do all basic setup for this application.
*/
public SendMail() {
//{{INIT_CONTROLS
setTitle("SendMail Example");
getContentPane().setLayout(null);
setSize(736, 312);
setVisible(false);
JLabel1.setText("From:");
getContentPane().add(JLabel1);
JLabel1.setBounds(12, 12, 36, 12);
JLabel2.setText("To:");
getContentPane().add(JLabel2);
JLabel2.setBounds(12, 48, 36, 12);
JLabel3.setText("Subject:");
getContentPane().add(JLabel3);
JLabel3.setBounds(12, 84, 48, 12);
JLabel4.setText("SMTP Server:");
getContentPane().add(JLabel4);
JLabel4.setBounds(12, 120, 84, 12);
getContentPane().add(_from);
_from.setBounds(96, 12, 300, 24);
getContentPane().add(_to);
_to.setBounds(96, 48, 300, 24);
getContentPane().add(_subject);
_subject.setBounds(96, 84, 300, 24);
getContentPane().add(_smtp);
_smtp.setBounds(96, 120, 300, 24);
getContentPane().add(_scrollPane2);
_scrollPane2.setBounds(12, 156, 384, 108);
_body.setText("Enter your message here.");
_scrollPane2.getViewport().add(_body);
_body.setBounds(0, 0, 381, 105);
Send.setText("Send");
Send.setActionCommand("Send");
getContentPane().add(Send);
Send.setBounds(60, 276, 132, 24);
Cancel.setText("Cancel");
Cancel.setActionCommand("Cancel");
getContentPane().add(Cancel);
Cancel.setBounds(216, 276, 120, 24);
getContentPane().add(_scrollPane);
_scrollPane.setBounds(408, 12, 312, 288);
getContentPane().add(_output);
_output.setBounds(408, 12, 309, 285);
//}}
//{{INIT_MENUS
//}}
//{{REGISTER_LISTENERS
SymAction lSymAction = new SymAction();
Send.addActionListener(lSymAction);
Cancel.addActionListener(lSymAction);
//}}
_output.setModel(_model);
_model.addElement("Server output displayed here:");
_scrollPane.getViewport().setView(_output);
_scrollPane2.getViewport().setView(_body);
}
/**
* Moves the app to the correct position when it is made visible.
*
* @param b
* True to make visible, false to make invisible.
*/
public void setVisible(boolean b) {
if (b)
setLocation(50, 50);
super.setVisible(b);
}
/**
* The main function basically just creates a new object, then shows it.
*
* @param args
* Command line arguments. Not used in this application.
*/
static public void main(String args[]) {
(new SendMail()).show();
}
/**
* Created by VisualCafe. Sets the window size.
*/
public void addNotify() {
// Record the size of the window prior to
// calling parents addNotify.
Dimension size = getSize();
super.addNotify();
if (frameSizeAdjusted)
return;
frameSizeAdjusted = true;
// Adjust size of frame according to the
// insets and menu bar
Insets insets = getInsets();
javax.swing.JMenuBar menuBar = getRootPane().getJMenuBar();
int menuBarHeight = 0;
if (menuBar != null)
menuBarHeight = menuBar.getPreferredSize().height;
setSize(insets.left + insets.right + size.width, insets.top
+ insets.bottom + size.height + menuBarHeight);
}
// Used by addNotify
boolean frameSizeAdjusted = false;
//{{DECLARE_CONTROLS
/**
* A label.
*/
javax.swing.JLabel JLabel1 = new javax.swing.JLabel();
/**
* A label.
*/
javax.swing.JLabel JLabel2 = new javax.swing.JLabel();
/**
* A label.
*/
javax.swing.JLabel JLabel3 = new javax.swing.JLabel();
/**
* A label.
*/
javax.swing.JLabel JLabel4 = new javax.swing.JLabel();
/**
* Who this message is from.
*/
javax.swing.JTextField _from = new javax.swing.JTextField();
/**
* Who this message is to.
*/
javax.swing.JTextField _to = new javax.swing.JTextField();
/**
* The subject of this message.
*/
javax.swing.JTextField _subject = new javax.swing.JTextField();
/**
* The SMTP server to use to send this message.
*/
javax.swing.JTextField _smtp = new javax.swing.JTextField();
/**
* A scroll pane.
*/
javax.swing.JScrollPane _scrollPane2 = new javax.swing.JScrollPane();
/**
* The body of this email message.
*/
javax.swing.JTextArea _body = new javax.swing.JTextArea();
/**
* The send button.
*/
javax.swing.JButton Send = new javax.swing.JButton();
/**
* The cancel button.
*/
javax.swing.JButton Cancel = new javax.swing.JButton();
/**
* A scroll pain.
*/
javax.swing.JScrollPane _scrollPane = new javax.swing.JScrollPane();
/**
* The output area. Server messages are displayed here.
*/
javax.swing.JList _output = new javax.swing.JList();
//}}
/**
* The list of items added to the output list box.
*/
javax.swing.DefaultListModel _model = new javax.swing.DefaultListModel();
/**
* Input from the socket.
*/
java.io.BufferedReader _in;
/**
* Output to the socket.
*/
java.io.PrintWriter _out;
//{{DECLARE_MENUS
//}}
/**
* Internal class created by VisualCafe to route the events to the correct
* functions.
*
* @author VisualCafe
* @version 1.0
*/
class SymAction implements java.awt.event.ActionListener {
/**
* Route the event to the correction method.
*
* @param event
* The event.
*/
public void actionPerformed(java.awt.event.ActionEvent event) {
Object object = event.getSource();
if (object == Send)
Send_actionPerformed(event);
else if (object == Cancel)
Cancel_actionPerformed(event);
}
}
/**
* Called to actually send a string of text to the socket. This method makes
* note of the text sent and the response in the JList output box. Pass a
* null value to simply wait for a response.
*
* @param s
* A string to be sent to the socket. null to just wait for a
* response.
* @exception java.io.IOException
*/
protected void send(String s) throws java.io.IOException {
// Send the SMTP command
if (s != null) {
_model.addElement("C:" + s);
_out.println(s);
_out.flush();
}
// Wait for the response
String line = _in.readLine();
if (line != null) {
_model.addElement("S:" + line);
}
}
/**
* Called when the send button is clicked. Actually sends the mail message.
*
* @param event
* The event.
*/
void Send_actionPerformed(java.awt.event.ActionEvent event) {
try {
java.net.Socket s = new java.net.Socket(_smtp.getText(), 25);
_out = new java.io.PrintWriter(s.getOutputStream());
_in = new java.io.BufferedReader(new java.io.InputStreamReader(s
.getInputStream()));
send(null);
send("HELO " + java.net.InetAddress.getLocalHost().getHostName());
send("MAIL FROM: " + _from.getText());
send("RCPT TO: " + _to.getText());
send("DATA");
_out.println("Subject:" + _subject.getText());
_out.println(_body.getText());
send(".");
s.close();
} catch (Exception e) {
_model.addElement("Error: " + e);
}
}
/**
* Called when cancel is clicked. End the application.
*
* @param event
* The event.
*/
void Cancel_actionPerformed(java.awt.event.ActionEvent event) {
System.exit(0);
}
}