Java swing发送邮件实例

import java.util.Properties;

import java.util.logging.Level;
import java.util.logging.Logger;
import javax.mail.Address;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;


public class SendEmailSwing extends javax.swing.JFrame {
 /**
     * Creates new form SendEmail
     */
    public SendEmailSwing() {
        initComponents();
    }




    //
    private void initComponents() {


        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        sendperson = new javax.swing.JTextField();
        password = new javax.swing.JPasswordField();
        getperson = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        context = new javax.swing.JTextArea();
        send = new javax.swing.JButton();
        reset = new javax.swing.JButton();
        jLabel6 = new javax.swing.JLabel();
        smtpname = new javax.swing.JTextField();
        jLabel7 = new javax.swing.JLabel();
        smtpport = new javax.swing.JTextField();
        jLabel8 = new javax.swing.JLabel();
        subject = new javax.swing.JTextField();
        smtpl = new javax.swing.JLabel();
        sendpersonl = new javax.swing.JLabel();
        getl = new javax.swing.JLabel();
        subjectl = new javax.swing.JLabel();
        contextl = new javax.swing.JLabel();


        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);


        jLabel1.setFont(new java.awt.Font("宋体", 0, 18)); // NOI18N
        jLabel1.setText("发送邮件");


        jLabel2.setText("发送人：");


        jLabel3.setText("密码：");


        jLabel4.setText("收件人：");


        jLabel5.setText("内容：");


        context.setColumns(20);
        context.setRows(5);
        jScrollPane1.setViewportView(context);


        send.setText("发送");
        send.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                sendActionPerformed(evt);
            }
        });


        reset.setText("清空");
        reset.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                resetActionPerformed(evt);
            }
        });


        jLabel6.setText("smtp服务器：");


        jLabel7.setText("端口：");


        smtpport.setText("25");


        jLabel8.setText("主题：");


        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 145, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(82, 82, 82))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel5)
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 385, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(send, javax.swing.GroupLayout.PREFERRED_SIZE, 82, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(64, 64, 64)
                                .addComponent(reset, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE))))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel8, javax.swing.GroupLayout.PREFERRED_SIZE, 48, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(subject, javax.swing.GroupLayout.PREFERRED_SIZE, 387, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel6)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(smtpname, javax.swing.GroupLayout.PREFERRED_SIZE, 136, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jLabel7))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(256, 256, 256)
                                .addComponent(smtpport, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(smtpl)
                        .addGap(90, 90, 90))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                .addComponent(getperson, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGroup(layout.createSequentialGroup()
                                    .addComponent(jLabel2)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(sendperson, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)))
                            .addComponent(jLabel4))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel3)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(password, javax.swing.GroupLayout.PREFERRED_SIZE, 162, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(getl))))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(sendpersonl)
                    .addComponent(subjectl)
                    .addComponent(contextl))
                .addGap(0, 26, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(19, 19, 19)
                .addComponent(jLabel1)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel6, javax.swing.GroupLayout.PREFERRED_SIZE, 21, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(smtpname, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel7)
                    .addComponent(smtpport, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(smtpl))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(jLabel3)
                    .addComponent(sendperson, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(password, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(sendpersonl))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(getperson, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(getl))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 17, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel8)
                    .addComponent(subject, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(subjectl))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(send)
                            .addComponent(reset)))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel5)
                        .addGap(33, 33, 33)
                        .addComponent(contextl)))
                .addGap(34, 34, 34))
        );


        pack();
    }//


    private void sendActionPerformed(java.awt.event.ActionEvent evt) {
        try {
            send();
        } catch (MessagingException ex) {
            Logger.getLogger(SendEmailSwing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }


    private void resetActionPerformed(java.awt.event.ActionEvent evt) {
      reset();    
    }
public  void send() throws MessagingException{
   if(smtpname.getText()!=null&&"".equals(smtpname.getText())){
   smtpl.setText("error");
   return ;
   }else{
        smtpl.setText(null);
   } 
   if(smtpport.getText()!=null&&"".equals(smtpport.getText())){
   smtpl.setText("error");
   return ;
  } else{
        smtpl.setText(null);
   } 
   if(sendperson.getText()!=null&&"".equals(sendperson.getText())){
   sendpersonl.setText("error");
   return ;
  }else{
        sendpersonl.setText(null);
   } 
  if(password.getText()!=null&&"".equals(password.getText())){
   sendpersonl.setText("error");
   return ;
  }else{
       sendpersonl.setText(null);
   }  
  if(getperson.getText()!=null&&"".equals(getperson.getText())){
   getl.setText("error");
   return ;
  }else{
       getl.setText(null);
   }  
   if(subject.getText()!=null&&"".equals(subject.getText())){
   subjectl.setText("error");
   return ;
  }else{
        subjectl.setText(null);
   }  
Properties props=new Properties();
props.setProperty("mail.smtp.auth","true");
props.setProperty("mail.transport.protocol","smtp");
Session session=Session.getInstance(props);
session.setDebug(true);
Message msg=new MimeMessage(session);
msg.setText(context.getText());
msg.setSubject(subject.getText());
msg.setFrom(new InternetAddress(sendperson.getText()));
//msg.setFrom(new InternetAddress("[email protected]"));
Transport transport=session.getTransport();
transport.connect(smtpname.getText(),Integer.parseInt(smtpport.getText()),sendperson.getText(),password.getText());
transport.sendMessage(msg,new Address[]{new InternetAddress(getperson.getText())});
transport.close();
}
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /*
         * Set the Nimbus look and feel
         */
        //
        /*
         * If Nimbus (introduced in Java SE 6) is not available, stay with the
         * default look and feel. For details see
         * http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(SendEmailSwing.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(SendEmailSwing.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(SendEmailSwing.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(SendEmailSwing.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //


        /*
         * Create and display the form
         */
        java.awt.EventQueue.invokeLater(new Runnable() {


            public void run() {
                new SendEmailSwing().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JTextArea context;
    private javax.swing.JLabel contextl;
    private javax.swing.JLabel getl;
    private javax.swing.JTextField getperson;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JPasswordField password;
    private javax.swing.JButton reset;
    private javax.swing.JButton send;
    private javax.swing.JTextField sendperson;
    private javax.swing.JLabel sendpersonl;
    private javax.swing.JLabel smtpl;
    private javax.swing.JTextField smtpname;
    private javax.swing.JTextField smtpport;
    private javax.swing.JTextField subject;
    private javax.swing.JLabel subjectl;
    // End of variables declaration


    private void reset() {
       sendperson.setText(null);
       password.setText(null);
       getperson.setText(null);
       context.setText(null);
       smtpname.setText(null);
       smtpport.setText("25");
    }


}