Spring JavaMail 筆記

Gmail via SSL

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="host" value="smtp.gmail.com" />
    <property name="port" value="465" />
    <property name="username" value="smtp-user" />
    <property name="password" value="smtp-passwd" />

    <property name="javaMailProperties">
        <props>
            <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
            <prop key="mail.smtp.auth">true</prop>
        </props>
    </property>
</bean>

Gmail via TLS

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="host" value="smtp.gmail.com" />
    <property name="port" value="587" />
    <property name="username" value="smtp-user" />
    <property name="password" value="smtp-passwd" />
    <property name="javaMailProperties">
        <props>
            <prop key="mail.smtp.starttls.enable">true</prop>
            <prop key="mail.smtp.auth">true</prop>
        </props>
    </property>
</bean>

Sample Code

package test_mail;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;

public class TestSpringMail {

    public static void main( String[] args ) throws Exception {

        AbstractApplicationContext context
            = new ClassPathXmlApplicationContext("test_mail/spring-mail.xml");

        JavaMailSender mailSender 
            = (JavaMailSender) context.getBean("mailSender");

        sample1(mailSender);
        sample2(mailSender);
        sample3(mailSender);

        context.close();
    }


    public static void sample1(JavaMailSender mailSender) throws Exception {
        MimeMessage mimeMessage = mailSender.createMimeMessage();

        mimeMessage.setFrom("from@no-spam.com");
        mimeMessage.setRecipients(
            Message.RecipientType.TO, "to@no-spam.com"
        );
        mimeMessage.setSubject("Testing Subject");
        mimeMessage.setContent(
            "<b>Testing Content.</b>", 
            "text/html; charset=utf-8"
        );

        mailSender.send(mimeMessage);
    }


    public static void sample2(JavaMailSender mailSender) throws Exception {
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        MimeMessageHelper message = new MimeMessageHelper(mimeMessage, "utf-8");

        message.setFrom("from@no-spam.com");
        message.setTo("to@no-spam.com");
        message.setSubject("Testing Subject");
        message.setText("<b>Testing Content.</b>", true);

        mailSender.send(mimeMessage);
    }


    public static void sample3(JavaMailSender mailSender) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom("from@no-spam.com");
        message.setTo("to@no-spam.com");
        message.setSubject("Testing Subject");
        message.setText("Testing Content.");

        mailSender.send(message);
    }

}

參考自：
JavaMail API – Sending email via Gmail SMTP example : Mkyong
Spring – Sending e-mail with attachment : Mkyong
Spring – Define an E-mail template in bean configuration file : Mkyong
Spring – Sending E-mail via Gmail SMTP server with MailSender : Mkyong