javamailframe.java

使用JavaMail开发的具有发送、接收邮件的应用

        public PasswordAuthentication getPasswordAuthentication() {

            return new PasswordAuthentication(account.userName, account.passWord);

        }
    }

private void btnSendActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnSendActionPerformed
// TODO add your handling code here:
    if (waitDlg == null) {
        waitDlg = new WaitingWindow(this);
    }
    Thread sendThread = new Thread(new Runnable() {

        @Override
        public void run() {
            JavaMailFrame.this.setEnabled(false);

            boolean success;
            Properties props = new Properties();// fill props with any information

            Session session;

            try {
                if (account.host.contains("smtp")) {
                    // Setup mail server
                    props.put("mail.smtp.host", account.host);
                    props.put("mail.smtp.auth", "true");   //SMTP服务用户认证。虽然foxmail配置中没有显示需要身份验证，实际上都加了authentication

                    Authenticator auth = new MyAuthenticator();

                    session = Session.getInstance(props, auth);
                } else {
                    props.put("mail.smtp.host", getMxServer());
                    props.put("mail.smtp.port", "25");
                    props.put("mail.smtp.auth", "f");
                    session = Session.getInstance(props, null);
                }

                success = sendMessage(session);
                JavaMailFrame.this.setEnabled(true);
                waitDlg.setVisible(false);
                if (success) {
                    JOptionPane.showMessageDialog(JavaMailFrame.this, "发送成功！");
                } else {
                    JOptionPane.showMessageDialog(JavaMailFrame.this, "发送失败！", "错误", JOptionPane.ERROR_MESSAGE);
                }
            } catch (Exception ex) {
                JavaMailFrame.this.setEnabled(true);
                waitDlg.setVisible(false);
                JOptionPane.showMessageDialog(JavaMailFrame.this, "发送失败！" + ex.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
//                Logger.getLogger(JavaMailFrame.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    });
    sendThread.start();
    waitDlg.setVisible(true);
}//GEN-LAST:event_btnSendActionPerformed

    private String getMxServer() throws Exception {
        // DNS服务器，如果需要的话手工设置一下。
        String dns = "dns://";

        //得到接受方的服务器域名
        String strTo = txtTo.getText();
        if (strTo.isEmpty()) {
            throw new Exception("收件人不能为空");
        } else if (strTo.contains(";")) {
            throw new Exception("只能发给一个收件人");
        }
        String domain = strTo.substring(strTo.indexOf('@') + 1);
        Hashtable env = new Hashtable();
        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.dns.DnsContextFactory");
        env.put(Context.PROVIDER_URL, dns);
        DirContext ctx = new InitialDirContext(env);
        Attributes attrs = ctx.getAttributes(domain, new String[]{"MX"});
        if (attrs == null || attrs.size() <= 0) {
            throw new java.lang.IllegalStateException("错误:你的DNS服务器没有相应的MX记录!");
        }
        NamingEnumeration servers = attrs.getAll();
        // 列出所有邮件服务器：
        String smtpHost = null;
        if (servers.hasMore()) {
            smtpHost = (String) ((Attribute) servers.next()).get(0);
            smtpHost = smtpHost.substring(smtpHost.lastIndexOf(' ') + 1);
        }
        return smtpHost;
    }

    private boolean sendMessage(Session session) throws MessagingException, UnsupportedEncodingException {


        int i,  nCount;
        boolean success = false;

        // Define message
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(account.from));  //发送人
        String[] recipients = txtTo.getText().split(";");
        nCount = recipients.length;
        InternetAddress[] recAddrs = new InternetAddress[nCount];
        for (i = 0; i < nCount; i++) {
            recAddrs[i] = new InternetAddress(recipients[i]);
        }
        message.addRecipients(Message.RecipientType.TO, recAddrs);//收件人
        if (!txtCC.getText().isEmpty()) {
            recipients = txtCC.getText().split(";");
            nCount = recipients.length;
            recAddrs = new InternetAddress[nCount];
            for (i = 0; i < nCount; i++) {
                recAddrs[i] = new InternetAddress(recipients[i]);
            }
            message.addRecipients(Message.RecipientType.CC, recAddrs);//抄送人
        }
        message.setSubject(txtSubject.getText()); //标题，自动对非US-ASCII编码
        message.setHeader("X-Mailer", "JavaMail");  //不加此句的话某些smtp服务器（如tom.com)认为是垃圾邮件，拒发。“553 this mail is blocked by kbas”

        message.setSentDate(new Date()); //发送日期

        if (listModel.size() > 0) {  //has attachment

            Multipart multiPart = new MimeMultipart();

            BodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setText(txtContent.getText());
            multiPart.addBodyPart(messageBodyPart);

            Enumeration<Attachment> attaches = (Enumeration<Attachment>) listModel.elements();
            while (attaches.hasMoreElements()) {
                Attachment attach = attaches.nextElement();
                messageBodyPart = new MimeBodyPart();
                messageBodyPart.setDataHandler(new DataHandler(attach.dataSrc));
                messageBodyPart.setFileName(MimeUtility.encodeText(attach.fileName));
                multiPart.addBodyPart(messageBodyPart);
            }

            message.setContent(multiPart);
        } else {
            message.setText(txtContent.getText());  //若统一看作multipart的话，当没有附件时也可能会出现“回形针”

        // Send message
        }
        session.setDebug(true);

        nCount = 3;
        while (nCount > 0 && !success) {
            try {
                Transport.send(message);
                success = true;
            } catch (Exception ex) {
            }
            nCount--;
        }
        return success;
    }

private void btnAddActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnAddActionPerformed
// TODO add your handling code here:
    JFileChooser chooser = new JFileChooser();
    chooser.setCurrentDirectory(new File(currentPath));
    chooser.setMultiSelectionEnabled(true);
    int ret = chooser.showOpenDialog(this);
    if (ret == JFileChooser.APPROVE_OPTION) {
        currentPath = chooser.getSelectedFile().getPath();
        File[] files = chooser.getSelectedFiles();
        for (File file : files) {
            String fileName = file.getName();
            FileDataSource dataSrc = new FileDataSource(file.getPath());
            Attachment attach = new Attachment(fileName, dataSrc);
            listModel.addElement(attach);
        }
    }
}//GEN-LAST:event_btnAddActionPerformed

private void btnDelActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnDelActionPerformed
// TODO add your handling code here:
    int[] sels = lstAttach.getSelectedIndices();


    int i,  nCount = sels.length;
    if (nCount >= 0) {
        for (i = nCount - 1; i >= 0; i--) {
            listModel.remove(sels[i]);
        }
    }
}//GEN-LAST:event_btnDelActionPerformed

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton btnAdd;
    private javax.swing.JButton btnDel;
    private javax.swing.JButton btnSend;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JList lstAttach;
    private javax.swing.JTextField txtCC;
    private javax.swing.JTextArea txtContent;
    private javax.swing.JTextField txtSubject;
    private javax.swing.JTextField txtTo;
    // End of variables declaration//GEN-END:variables
}