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

spring.thymeleaf.cache=false

spring.mail.host=smtp.qq.com
spring.mail.username=***@qq.com
spring.mail.password=ymwrdffauajebgde //此处的密码时qq邮箱的授权码
spring.mail.properties.mail.smtp.auth=true 
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.stattls.required=true

@Service
public class MailService {

  @Value("${spring.mail.username}")
  private String from;
  
  @Autowired
  private JavaMailSender sender;
  
  /*发送邮件的方法*/
  public void sendSimple(String to, String title, String content){
    SimpleMailMessage message = new SimpleMailMessage();
    message.setFrom(from); //发送者
    message.setTo(to); //接受者
    message.setSubject(title); //发送标题
    message.setText(content); //发送内容
    sender.send(message);
    
    System.out.println("邮件发送成功");
    
  }
}

  
邮件发送
  
    
选择文件: 
    

  

@Controller
public class MailController {

　　@Autowired
  private MailService mailService;
  
  private String to="***@qq.com";
  
  @RequestMapping("mail")
  public String mail(){
    return "/mail";
  }
  
  @RequestMapping("sendMail")
  @ResponseBody
  public String sendMail(@RequestParam("title")String title){
    System.out.println("-----title: " + title);
    mailService.sendSimple(to, title, title);
    return "success";
  }
}