简单的邮件客户端

 

运行界面如下：

源代码如下：(本程序使用的是Merak mail server)

package com.zzk;

 

/**

 * @author 任文超

 * @version 1.0

 * */

import java.awt.Color;

import java.awt.EventQueue;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Date;

import java.util.Properties;

import javax.mail.Message;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

 

public class SendMailFrame extends JFrame {

    private JTextArea ta_text;

    private JTextField tf_title;

    private JTextField tf_send;

    private JTextField tf_receive;

    private Session session;// 定义Session对象

    private String sendHost = "localhost";// 定义发送邮件的主机

    private String sendProtocol="smtp";// 定义使用的发送协议

    public static void main(String args[]) {

        EventQueue.invokeLater(new Runnable() {

            public void run() {

                try {

                    SendMailFrame frame = new SendMailFrame();

                    frame.init();

                    frame.setVisible(true);

                } catch (Exception e) {

                    e.printStackTrace();

                }

            }

        });

    }

     

    /**

     * Create the frame

     */

    public SendMailFrame() {

        super();

        setTitle("发送邮件窗体");

        getContentPane().setLayout(null);

        setBounds(100, 100, 439, 299);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 

        final JLabel label = new JLabel();

        label.setForeground(new Color(0, 0, 255));

        label.setFont(new Font("", Font.BOLD, 22));

        label.setText("发送电子邮件");

        label.setBounds(144, 10, 185, 24);

        getContentPane().add(label);

 

        final JLabel label_1 = new JLabel();

        label_1.setText("收件人地址：");

        label_1.setBounds(22, 42, 85, 18);

        getContentPane().add(label_1);

 

        tf_receive = new JTextField();

        tf_receive.setBounds(113, 40, 287, 22);

        getContentPane().add(tf_receive);

 

        final JLabel label_2 = new JLabel();

        label_2.setText("发件人地址：");

        label_2.setBounds(22, 68, 78, 18);

        getContentPane().add(label_2);

 

        tf_send = new JTextField();

        tf_send.setBounds(113, 66, 287, 22);

        getContentPane().add(tf_send);

 

        final JLabel label_3 = new JLabel();

        label_3.setText("主    题：");

        label_3.setBounds(32, 92, 66, 18);

        getContentPane().add(label_3);

 

        tf_title = new JTextField();

        tf_title.setBounds(113, 94, 287, 22);

        getContentPane().add(tf_title);

 

        final JLabel label_4 = new JLabel();

        label_4.setText("正    文：");

        label_4.setBounds(34, 128, 66, 18);

        getContentPane().add(label_4);

 

        final JScrollPane scrollPane = new JScrollPane();

        scrollPane.setBounds(113, 128, 287, 91);

        getContentPane().add(scrollPane);

 

        ta_text = new JTextArea();

        scrollPane.setViewportView(ta_text);

 

        final JButton btn_send = new JButton();

        btn_send.addActionListener(new ActionListener() {

            public void actionPerformed(final ActionEvent e) {

                String fromAddr = tf_send.getText().trim();

                String toAddr = tf_receive.getText().trim();// 真实存在的目标邮件地址

                String title = tf_title.getText().trim();

                String text = ta_text.getText().trim();

                try {

                    sendMessage(fromAddr, toAddr, title, text);

                } catch (Exception e1) {

                    e1.printStackTrace();

                }

            }

        });

        btn_send.setText("发    送");

        btn_send.setBounds(144, 225, 78, 28);

        getContentPane().add(btn_send);

 

        final JButton btn_exit = new JButton();

        btn_exit.addActionListener(new ActionListener() {

            public void actionPerformed(final ActionEvent e) {

                System.exit(0);

            }

        });

        btn_exit.setText("退    出");

        btn_exit.setBounds(279, 225, 78, 28);

        getContentPane().add(btn_exit);

    }

    public void init() throws Exception {

        Properties props = new Properties();// 创建属性对象

        props.put("mail.transport.protocol", sendProtocol);// 指定邮件传输协议

        props.put("mail.smtp.class", "com.sun.mail.smtp.SMTPTransport");//指定传输协议使用的类

        props.put("mail.smtp.host", sendHost);// 定义发送邮件的主机

        session = Session.getDefaultInstance(props);// 创建Session对象

    }

    /**

     * @param fromAddr 发送者

     * @param toAddr 接收者

     * @param title 主题

     * @param text 内容

     * @throws Exception 异常

     */

    public void sendMessage(String fromAddr,String toAddr,String title,String text) throws Exception {

        Message msg = new MimeMessage(session);// 创建Message对象

        InternetAddress[] toAddrs = InternetAddress.parse(toAddr,false);// 创建接收方的InternetAddress对象

        msg.setRecipients(Message.RecipientType.TO, toAddrs);// 指定接收方

        msg.setSentDate(new Date());// 指定接发送日期

        msg.setSubject(title);// 设置主题

        msg.setFrom(new InternetAddress(fromAddr));// 指定发送者

        msg.setText(text);// 指定发送内容

        Transport.send(msg);// 发送邮件

        JOptionPane.showMessageDialog(null, "邮件发送成功。");

    }

}