使用JavaMail SMTP协议发送邮件

使用JavaMail SMTP协议发送邮件

发现用javamail包可以很方便的实现。示例程序使用gmail的邮件服务器来发送邮件。关于SMTP端口等配置见下面链接：

https://support.google.com/mail/bin/answer.py?hl=en&answer=13287

注：下面程序需导入javaee-api-6.0.jar 跟 mail.jar

1.使用TLS发送邮件

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 SendMailTLS {

    public static void main(String[] args) {

        final String username = "[email protected]" ;
        final String password = "password" ;

        Properties props = new Properties();
        props.put( "mail.smtp.auth" , "true" );
        props.put( "mail.smtp.starttls.enable" , "true" );
        props.put( "mail.smtp.host" , "smtp.gmail.com" );
        props.put( "mail.smtp.port" , "587" );

        Session session = Session.getInstance(props,
          new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
          });

        try {

            Message message = new MimeMessage(session);
            message.setFrom( new InternetAddress( "[email protected]" ));
            message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse( "[email protected]" ));
            message.setSubject( "Testing Subject" );
            message.setText( "Dear Mail Crawler,"
                + "\n\n No spam to my email, please!" );

            Transport.send(message);

            System.out.println( "Done" );

        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}</span>

2.使用SSL发送邮件

<span style= "font-size:18px;" ><span style= "font-size:16px;" > 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 SendMailSSL {
    public static void main(String[] args) {
        Properties props = new Properties();
        props.put( "mail.smtp.host" , "smtp.gmail.com" );
        props.put( "mail.smtp.socketFactory.port" , "465" );
        props.put( "mail.smtp.socketFactory.class" ,
                "javax.net.ssl.SSLSocketFactory" );
        props.put( "mail.smtp.auth" , "true" );
        props.put( "mail.smtp.port" , "465" );

        Session session = Session.getDefaultInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication( "username" , "password" );
                }
            });

        try {

            Message message = new MimeMessage(session);
            message.setFrom( new InternetAddress( "[email protected]" ));
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse( "[email protected]" ));
            message.setSubject( "Testing Subject" );
            message.setText( "Dear Mail Crawler," +
                    "\n\n No spam to my email, please!" );

            Transport.send(message);

            System.out.println( "Done" );

        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}

转自：http://jia1546.is-programmer.com/posts/32912.html