使用JavaMail发送邮件,并使用465端口开启ssl加密传输，保证邮件安全

package com.wangxin.test;

import java.security.Security;
import java.util.Date;
import java.util.Properties;

import javax.mail.Authenticator;
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;

/**
 * javaMail的邮件工具类
 * @author wangXgnaw
 *
 */
public class MailUtil {

    /**
     * 使用加密的方式,利用465端口进行传输邮件,开启ssl
     * @param to    为收件人邮箱
     * @param message    发送的消息
     */
    public static void sendEmil(String to, String message) {
        try {
            Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
            final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
            //设置邮件会话参数
            Properties props = new Properties();
            //邮箱的发送服务器地址
            props.setProperty("mail.smtp.host", "smtp.sina.com");
            props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
            props.setProperty("mail.smtp.socketFactory.fallback", "false");
            //邮箱发送服务器端口,这里设置为465端口
            props.setProperty("mail.smtp.port", "465");
            props.setProperty("mail.smtp.socketFactory.port", "465");
            props.put("mail.smtp.auth", "true");
            final String username = "发送者邮箱用户名";
            final String password = "发送者邮箱密码或者邮箱授权码";
            //获取到邮箱会话,利用匿名内部类的方式,将发送者邮箱用户名和密码授权给jvm
            Session session = Session.getDefaultInstance(props, new Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username, password);
                }
            });
            //通过会话,得到一个邮件,用于发送
            Message msg = new MimeMessage(session);
            //设置发件人
            msg.setFrom(new InternetAddress("发件人邮箱"));
            //设置收件人,to为收件人,cc为抄送,bcc为密送
            msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false));
            msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(to, false));
            msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(to, false));
            msg.setSubject("邮件主题");
            //设置邮件消息
            msg.setText(message);
            //设置发送的日期
            msg.setSentDate(new Date());
            
            //调用Transport的send方法去发送邮件
            Transport.send(msg);

        } catch (Exception e) {
            e.printStackTrace();
        }

    }
    
}

转载：https://www.cnblogs.com/wangxinblog/p/7288931.html