Java Mail -附加多个pdf文件并发送邮件

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;

public class SendEmailWithAttachments {
    public static void main(String[] args) {
        // 邮件配置信息
        String host = "smtp.example.com";
        String username = "your_username";
        String password = "your_password";
        String from = "sender@example.com";
        String to = "recipient@example.com";
        String subject = "Email with attachments";

        // 创建邮件会话
        Properties props = new Properties();
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.auth", "true");
        Session session = Session.getInstance(props, new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
        });

        try {
            // 创建邮件消息
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(from));
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
            message.setSubject(subject);

            // 创建邮件附件
            MimeMultipart multipart = new MimeMultipart();
            // 添加多个PDF文件附件
            String[] pdfFiles = {"file1.pdf", "file2.pdf", "file3.pdf"};
            for (String pdfFile : pdfFiles) {
                MimeBodyPart attachmentPart = new MimeBodyPart();
                attachmentPart.attachFile(pdfFile);
                multipart.addBodyPart(attachmentPart);
            }

            // 将附件添加到邮件消息中
            message.setContent(multipart);

            // 发送邮件
            Transport.send(message);
            System.out.println("Email sent successfully.");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}