发送邮件

引进依赖

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

添加配置文件

spring:
  mail:
    host: smtp.qq.com
    port: 587
    default-encoding: UTF-8
    username: 1992651344@qq.com
    password: 这里写上你的密码

QQ邮箱获取密码指南：
QQ邮箱不使用密码，而是用授权码，授权码获取如下所示： QQ授权码

代码实现

    @Autowired
    JavaMailSender javaMailSender;
    private void sendMail(String to, String subject, String content) {

        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        simpleMailMessage.setFrom("1992651344@qq.com");
        simpleMailMessage.setTo(to);
        simpleMailMessage.setSubject(subject);
        simpleMailMessage.setText(content);
        simpleMailMessage.setSentDate(new Date());
        javaMailSender.send(simpleMailMessage);
    }