1.引入pom

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

2、在application.properties中添加邮箱配置

spring.mail.host=smtp.qiye.163.com //邮箱服务器地址spring.mail.username=xxx@oo.com //用户名spring.mail.password=xxyyooo    //密码spring.mail.default-encoding=UTF-8mail.fromMail.addr=xxx@oo.com  //以谁来发送邮件 实例：spring.mail.host=192.168.*.*spring.mail.username=wangwei3@inner.sss.comspring.mail.password=wangwei3spring.mail.default-encoding=UTF-8mail.fromMail.addr=wangwei3@inner.sss.com

3、编写mailService,这里只提供实现类。

@Component //或者@Servicepublic class MailServiceImpl implements MailService{    private final Logger logger = LoggerFactory.getLogger(this.getClass());     @Autowired    private JavaMailSender mailSender;     @Value("${mail.fromMail.addr}") private String from;     @Override    public void sendSimpleMail(String to, String subject, String content) {        SimpleMailMessage message = new SimpleMailMessage();        message.setFrom(from);        message.setTo(to);        message.setSubject(subject);        message.setText(content);        try {            mailSender.send(message);            logger.info("简单邮件已经发送。");        } catch (Exception e) {            logger.error("发送简单邮件时发生异常！", e);        }    }}

4、编写test类进行测试

@RunWith(SpringRunner.class)@SpringBootTestpublic class MailServiceTest {    @Autowired    private MailService MailService;    @Test    public void testSimpleMail() throws Exception {        MailService.sendSimpleMail("ityouknow@126.com","test simple mail"," hello this is simple mail");    }}

到此一个简单的邮件发送就结束了，还可以发送内容丰富的其他邮件模板，请参考

但是有坑，常见错误

解决方案：

1.开启Telnet

 

2.添加：-Xms512m -Xmx800m -Djava.net.preferIPv4Stack=true

如果还不行，参考下面链接，一般要更改tomcat，