MailTest.java

/*
 * *
 *  Copyright 2014 Yusuke Yamamoto
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  Distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
 
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.UnsupportedEncodingException;
import java.security.Security;
import java.util.Date;
import java.util.Properties;
 
public class MailTest {
    static final String USER = "user@domain.com";
    static final String PASSWORD = "password";
 
    public static void main(String[] args) throws Exception {
        sendMail("main内", "main内", "yusuke@samuraism.com", "yusuke@mac.com", null, null);
        new Object(){
            @Override
            protected void finalize() throws Throwable {
                super.finalize();
                sendMail("finalize内", "finalize内", "yusuke@samuraism.com", "yusuke@mac.com", null, null);
            }
        };
        Thread.sleep(20000);
    }
 
    public static void sendMail(String subject, String body, String from, String to, String cc, String bcc) throws MessagingException, UnsupportedEncodingException {
        String encoding = "UTF-8";
        Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
        Properties props = new Properties();
        props.setProperty("mail.smtp.host", "smtp.gmail.com");
        props.setProperty("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.setProperty("mail.smtp.socketFactory.fallback", "false");
        props.setProperty("mail.smtp.port", "465");
        props.setProperty("mail.smtp.socketFactory.port", "465");
        props.setProperty("mail.smtp.auth", "true");
        props.setProperty("mail.debug", "true");
        Session session = Session.getInstance(props, new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(USER, PASSWORD);
            }
        });
        MimeMessage mimeMessage = new MimeMessage(session);
        mimeMessage.setHeader("Content-Type", "text/plain; charset=" + encoding);
        mimeMessage.setFrom(new InternetAddress(from, from, encoding));
        mimeMessage.setRecipients(Message.RecipientType.TO, new Address[]{new InternetAddress(to)});
        if (cc != null) {
            mimeMessage.setRecipients(Message.RecipientType.CC
                    , new Address[]{new InternetAddress(cc)});
        }
        if (bcc != null) {
            mimeMessage.setRecipients(Message.RecipientType.BCC
                    , new Address[]{new InternetAddress(bcc)});
        }
        mimeMessage.setSubject(subject, encoding);
        mimeMessage.setText(body, encoding);
        mimeMessage.setSentDate(new Date());
        Transport.send(mimeMessage);
    }
 
}