Gửi email có đính kèm bằng JSP

Ví dụ gửi email có file đính kèm từ máy của bạn:

Ví dụ

<%@ page import = "java.io.*,java.util.*,javax.mail.*" %>
<%@ page import = "javax.mail.internet.*,javax.activation.*" %>
<%@ page import = "javax.servlet.http.*,javax.servlet.*" %>
<%
  String result;
  String to = "abcd@gmail.com";
  String from = "mcmohd@gmail.com";
  String host = "localhost";
  Properties properties = System.getProperties();
  properties.setProperty("mail.smtp.host", host);
  Session mailSession = Session.getDefaultInstance(properties);
  try {
    MimeMessage message = new MimeMessage(mailSession);
    message.setFrom(new InternetAddress(from));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
    message.setSubject("This is the Subject Line!");
    BodyPart messageBodyPart = new MimeBodyPart();
    messageBodyPart.setText("This is message body");
    Multipart multipart = new MimeMultipart();
    multipart.addBodyPart(messageBodyPart);
    messageBodyPart = new MimeBodyPart();
    String filename = "file.txt";
    DataSource source = new FileDataSource(filename);
    messageBodyPart.setDataHandler(new DataHandler(source));
    messageBodyPart.setFileName(filename);
    multipart.addBodyPart(messageBodyPart);
    message.setContent(multipart);
    Transport.send(message);
    result = "Sent message successfully....";
  } catch (MessagingException mex) {
    mex.printStackTrace();
    result = "Error: unable to send message....";
  }
%>
<html>
  <head> <title>Send Attachment Email using JSP</title> </head>
  <body>
    <center> <h1>Send Attachment Email using JSP</h1> </center>
    <p align="center"> <% out.println("Result: " + result + "\n"); %> </p>
  </body>
</html>

Phần xác thực người dùng

Nếu server email yêu cầu user/password xác thực, set properties:

props.setProperty("mail.user", "myuser");
props.setProperty("mail.password", "mypwd");