简单的邮件客户端-白红宇

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。"
);
    
}
}
        
      