Java Mail email automation processing: realize automated email management

import java.util.Properties; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.PassWordAuthentication; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; public class JavaMailSendEmail { public static void main(String[] args) { // 收件人电子邮件地址 String to = "example@gmail.com"; // 发件人电子邮件地址 String from = "johndoe@gmail.com"; // 发件人电子邮件密码 String password = "secret"; // 发送电子邮件的SMTP服务器 String smtpHost = "smtp.gmail.com"; // SMTP端口 int smtpPort = 587; // 设置邮件服务器属性 Properties props = new Properties(); props.put("mail.smtp.host", smtpHost); props.put("mail.smtp.port", smtpPort); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.starttls.enable", "true"); // 创建认证对象 PasswordAuthentication auth = new PasswordAuthentication(from, password); // 创建邮件会话 Session session = Session.getInstance(props, auth); try { // 创建邮件消息 Message message = new MimeMessage(session); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); message.setSubject("Java Mail示例"); message.setText("Hello, World!"); // 发送电子邮件 Transport.send(message); System.out.println("电子邮件已发送成功。"); } catch (MessagingException e) { System.out.println("电子邮件发送失败。"); e.printStackTrace(); } } }