阿里云服务器发送邮件失败，25端口被禁用，采用ssl 方式 465端口发送

/**
 *  邮件工具类
 * User: NZG
 * Date: 2019/3/8
 * Time: 12:25
 **/
@Data
@Component
@Configuration
@ConfigurationProperties(prefix = "email")
//@PropertySource("classpath:config/application.properties")
public class EmailConfig {

    private String myEmailAccount;  // 发件人 账号

    private String myEmailPassword; //密码,是你自己的设置的授权码

    private String email163SmtpHost;   // SMTP服务器(这里用的163 SMTP服务器)

    private String smtp163Port;// 端口号,这个是163使用到的;QQ的应该是465或者875

}

# 邮件发送 （网易）
email.myEmailAccount=17719@163.com
email.myEmailPassword=ng87187　　
email.email163SmtpHost=smtp.163.com
email.smtp163Port=25　　

　　

　@Autowired
　private EmailConfig emailConfig;

public ResponseResult<String> sendEmail(SendEmailCodeReqVO vo) {
    try {
        Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
        final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
        // Get a Properties object
        Properties props = new Properties();
        props.setProperty("mail.smtp.host", emailConfig.getEmail163SmtpHost());
        props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
        props.setProperty("mail.smtp.socketFactory.fallback", "false");
        props.setProperty("mail.smtp.port", emailConfig.getSmtp163Port());
        props.setProperty("mail.smtp.socketFactory.port", emailConfig.getSmtp163Port());
        props.put("mail.smtp.auth", "true");

        Session session = Session.getDefaultInstance(props, new Authenticator(){
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(emailConfig.getMyEmailAccount(),
                       emailConfig.getMyEmailPassword());
            }});

        session.setDebug(true);
        MimeMessage message = new MimeMessage(session);
        // 收件人
        message.setRecipients(Message.RecipientType.TO, vo.getReceiveEmailAccount());
        // 发件人
        message.setFrom(new InternetAddress(emailConfig.getMyEmailAccount()));
        //短信发送类型
        Integer type = vo.getType();
        EmailSendType sms = EmailSendType.getSmsEnumByType(type);
        // 内容(这个内容还不能乱写,有可能会被SMTP拒绝掉;多试几次吧)
        String msg = "";
        String pwd = PassWordUtils.editPassword();
        switch (sms) {
            case FORGET_PWD:
                msg = MessageFormat.format(PatientConstants.EMAIL_MESSAGE_PROMPT, pwd);
                break;
            default:
                break;
        }
        message.setSubject("辅助系统随机密码");
        message.setContent(msg, "text/html;charset=UTF-8");
        message.setSentDate(new Date());
        message.saveChanges();
        Transport.send(message);
        //根据邮箱修改密码
        UserPraient user = userHandler.getUserByEmail(vo.getReceiveEmailAccount());
        if(user==null){
            return ResponseResult.failNotice(PatientSystemCode.USER_REG_REEOR.msg());
        }
        user.setUserPassword(PassWordUtils.entryptPassword(pwd));
        userHandler.editUserPassword(user);
    } catch (MessagingException e) {
        e.printStackTrace();
        return ResponseResult.failNotice(PatientSystemCode.MAIL_DELIVERY_FAILED.msg());
    }
    return ResponseResult.success();
}