ksino's diary

覚えたことを忘れないように、小さなことでも書いていく。

Jakarta Mailを使ってメール送信

build.gradle

dependenciesに追加します。

    implementation group: 'com.sun.mail', name: 'jakarta.mail', version: '2.0.1'

Javaソース

import java.util.Date;
import java.util.Properties;

import jakarta.mail.Message;
import jakarta.mail.Session;
import jakarta.mail.Transport;
import jakarta.mail.internet.InternetAddress;
import jakarta.mail.internet.MimeMessage;

public class App {

    public static void main(String[] args) {
        Properties props = new Properties();
        props.put("mail.smtp.host", "localhost");
        props.put("mail.smtp.port", "2525"); // smtp4dev on docker

        Session session = Session.getInstance(props, null);
        try {
            MimeMessage msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress("example@example.com"));
            InternetAddress[] address = {new InternetAddress("example@example.com")};
            msg.setRecipients(Message.RecipientType.TO, address);
            msg.setSubject("Jakarta Mail APIs Test");
            msg.setSentDate(new Date());
            msg.setText("this is test message.");
            
            Transport.send(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}