springboot配置qq邮箱来发送邮件

Spring Boot2.x集成了mail模块，在dependencies引入这个

	org.springframework.boot
	spring-boot-starter-mail

spring:
  mail:
    username: xxxxx@qq.com
    password: xxxxxxxx
    host: smtp.qq.com
    port: 465
    properties:
      mail:
        transport:
          protocol: smtp
        smtp:
          socketFactory:
            class: javax.net.ssl.SSLSocketFactory
          port: ${spring.mail.port}
          auth: true
          starttls:
            enable: true
            required: true

spring.mail.password不是QQ密码，登录mail.qq.com，前往设置 - 账户 -POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务开启POP3/SMTP服务获取一个16个字符的密码

@Autowired
private JavaMailSender mailSender;
@Autowired
private MailProperties mailProperties;

@Override
protected void send(String receiver, String title, String content) {
    SimpleMailMessage message = new SimpleMailMessage();
    message.setFrom(mailProperties.getUsername());
    message.setTo(receiver);
    message.setSubject(title);
    message.setText(content);
    mailSender.send(message);
}