javax.mail.AuthenticationFailedException: 535 authentication failed

该异常为授权码的问题：授权码不是密码，而是代替密码的一组独立密码，可以理解为第二把开启邮箱的钥匙。第一次获取需要授权吗，手机验证。

package com.common.demo;

import java.security.GeneralSecurityException;
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;
import com.sun.mail.util.MailSSLSocketFactory;

public class SendEmail {

    public static void main(String[] args) throws GeneralSecurityException, InterruptedException {

        // 收件人电子邮箱
        String to = "abcdefg@qq.com";

        // 发件人电子邮箱
        String from = "abcde@qq.com";

        // 指定发送邮件的主机为 smtp.qq.com，QQ 邮件服务器
        String host = "smtp.qq.com";

        // 获取系统属性
        Properties properties = System.getProperties();

        // 设置邮件服务器
        properties.setProperty("mail.smtp.host", host);

        properties.put("mail.smtp.auth", "true");
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        properties.put("mail.smtp.ssl.enable", "true");
        properties.put("mail.smtp.ssl.socketFactory", sf);
        // 获取默认session对象
        Session session = Session.getDefaultInstance(properties, new Authenticator() {
            public PasswordAuthentication getPasswordAuthentication() {
                // 发件人邮件用户名、密码(密码为QQ邮箱授权码，并非登录密码)
                return new PasswordAuthentication("abcde@qq.com", "ymylumkcbcie");
            }
        });

        try {
            // 创建默认的 MimeMessage 对象
            MimeMessage message = new MimeMessage(session);

            // Set From: 头部头字段
            message.setFrom(new InternetAddress(from));

            // Set To: 头部头字段
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

            // Set Subject: 头部头字段
            message.setSubject("This is a Mail experiment!");

            // 设置消息体
            message.setText("This is actual message，this is a java send mail demo");

            // 发送消息
            Transport.send(message);
            System.out.println("Sent message successfully....from runoob.com");
        } catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
}