JavaSendEmail (send email)

1. You need to import the jar package: java.mail.jar (already in the attachment).

 

package test;

import java.util.Calendar;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message.RecipientType;
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 SendEmailTest {

    public static void sendEmailMessage(String smtpHost, String fromEmail, String password, String toEmail, String subject, String messageText,
            String messageType) throws MessagingException {
        // 第一步：配置javax.mail.Session对象
        System.out.println("as" + smtpHost + "configure mail session object");

        Properties props = new Properties();
        props.put("mail.smtp.host", smtpHost); props.put
        ("mail. smtp.starttls.enable", "true");// use STARTTLS secure connection
        // props.put("mail.smtp.port", "25"); //google use port 465 or 587
        props.put(" mail.smtp.auth", "true"); // use authentication
        // props.put("mail.debug", "true");
        Session mailSession = Session.getInstance(props, new MyAuthenticator(fromEmail, password)) ;

        // Step 2: Write message
        System.out.println("Write message from——to:" + fromEmail + "——" + toEmail);

        InternetAddress fromAddress = new InternetAddress(fromEmail);
        InternetAddress toAddress = new InternetAddress(toEmail);

        MimeMessage message = new MimeMessage(mailSession);

        message.setFrom(fromAddress);
        message.addRecipient(RecipientType.TO, toAddress);

        message.setSentDate(Calendar.getInstance().getTime());
        message.setSubject(subject);
        message.setContent(messageText, messageType);

        // 第三步：发送消息
        Transport transport = mailSession.getTransport("smtp");
        transport.connect(smtpHost, "", password);
        transport.send(message, message.getRecipients(RecipientType.TO));
        System.out.println("message send success!");
    }

    public static void main(String[] args) {
        try {
            SendEmailTest.sendEmailMessage("smtp.163.com", "[email protected]", "------", "[email protected]", "哈哈", "天道酬勤",
                    "text/html;charset=gb2312");
        } catch (MessagingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

class MyAuthenticator extends Authenticator {
    String userName = "";
    String password = "";

    public MyAuthenticator() {

    }

    public MyAuthenticator(String userName, String password) {
        this.userName = userName;
        this.password = password;
    }

    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(userName, password);
    }
}