sping邮件工具类抽取

用spring自带的邮件，但是有一个坑，需要在一个非受容器管理的对象里面，获取受容器管理的对象

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>
    

      SimpleMailMessage mailMessage = new SimpleMailMessage();
    //设置发送人
    mailMessage.setFrom("邮件");
    //邮件主题
    mailMessage.setSubject("宠物乐园审核通过邮件");
    //邮件内容
    mailMessage.setText("亲，您的店铺信息已经通过审核，请去往登陆界面登录：登录链接：<a href=http://localhost:8081/#/login></a>");
    //收件人
    mailMessage.setTo("邮件");
    javaMailSender.send(mailMessage);

我就想的是把该类，抽取成一个工具类方便用户使用，该怎么做？万分感谢

@Component
public class MailUtils implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }



    public static String send(SimpleMailMessage msg) {
        applicationContext.getBean(xx.class).send(msg)
    }

}