1.引入依賴

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

2.配置application.yml

spring:
  mail:
    # 163
    host: smtp.163.com #163的主機(jī)地址，通用的
    port:#可以不寫
    username: ****@163.com #發(fā)送郵件的郵箱
    password: ******#在https://mail.163.com/開啟pop3和imaq服務(wù)，同時獲取密碼
    protocol: smtp
    default-encoding: UTF-8
    properties:
      mail.smtp.auth: true
      mail.smtp.starttls.enable: true
      mail.smtp.starttls.required: true
      mail.smtp.socketFactory.port: 465
      mail.smtp.socketFactory.class: javax.net.ssl.SSLSocketFactory
      mail.smtp.socketFactory.fallback: false

3.代碼

@Service
public class SendTest {
    @Autowired
    private JavaMailSender javaMailSender;

    public void sendEmail(String recipient, String subject, String text) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom("*****@163.com");//發(fā)送郵箱
        message.setTo(recipient);//接收郵箱
        message.setSubject(subject);//主題
        message.setText(text);//內(nèi)容
        javaMailSender.send(message);
    }
}