<!--邮件-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <dependency>
            <groupId>com.sun.mail</groupId>
            <artifactId>javax.mail</artifactId>
        </dependency>

设置一下配置

 private static JavaMailSenderImpl getMailSender() {
        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
        //链接服务器
        javaMailSender.setHost(ApolloConfManage.getBaseConfigString("email.serverAddress"));
        //账号
        javaMailSender.setUsername(getMailUserName());
        //密码
        javaMailSender.setPassword(ApolloConfManage.getBaseConfigString("email.password"));
        javaMailSender.setDefaultEncoding("UTF-8");

        Properties properties = new Properties();
        //设置链接超时
        properties.setProperty("mail.smtp.timeout", "1000");
        //设置通过ssl协议使用465端口发送、使用默认端口（25）时下面三行不需要
        //开启认证
        properties.setProperty("mail.smtp.auth", "true");
        //设置ssl端口
        properties.setProperty("mail.smtp.socketFactory.port", "465");
        properties.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        javaMailSender.setJavaMailProperties(properties);
        return javaMailSender;
    }

发复杂邮件方法(里面开启了多线程,群发的时候效率高点)

 private static void send(final String title, final String body, final String[] toMail) {
        final String mailUserName = getMailUserName();
        final JavaMailSenderImpl javaMailSender = getMailSender();
        ThreadFactory namedThreadFactory = new ThreadFactoryBuilder()
                .setNameFormat("send-mail-%d").build();
        ExecutorService singleThreadPool = new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS,
                new LinkedBlockingQueue<Runnable>(1024), namedThreadFactory, new ThreadPoolExecutor.AbortPolicy());
        singleThreadPool.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    //复杂邮件
                    MimeMessage mimeMessage = javaMailSender.createMimeMessage();
                    //邮件发送助手
                    MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "utf-8");
                    //发送方
                    helper.setFrom(mailUserName);
                     //标题
                    helper.setSubject("环境:" + APPLICATION_ENV + title);
                    //正文
                    helper.setText(body, true);
                    //接受方
                    helper.setTo(toMail);
                    log.info("给收件人: {} 发送邮件，主题为: {}", Arrays.toString(toMail), title);
                    //发送邮件
                    javaMailSender.send(mimeMessage);
                } catch (Exception e) {
                    log.error(e.getLocalizedMessage(), e);
                }
            }
        });
        singleThreadPool.shutdown();
    }

简单邮件,上面获取邮件对象换一下

  //简单邮件
        SimpleMailMessage message = new SimpleMailMessage();

        //邮件标题
        message.setSubject("标题");

        //邮件内容
        message.setText("内容->邮件测试");

        //发送者
        message.setTo(" xxx");

        //接收者
        message.setFrom("xxx");

        mailSender.send(message);