一个依赖

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

获取授权码

alt

配置和使用

#配置邮箱基本信息
spring:
  mail:
    host: smtp.qq.com     #发送邮件服务器，请替换成自己的
    properties.mail.smtp.port: 465   #端口号
    username: 29xxxxx610@qq.com    #发送邮件的邮箱地址，请替换成自己的
    password: xxxxxnzlbybnfdfca   #客户端授权码，不是邮箱密码，请替换成自己的
    #邮件服务超时时间配置
    properties.mail.smtp.connectiontimeout: 5000
    properties.mail.smtp.timeout: 3000
    properties.mail.smtp.writetimeout: 5000
    #ssl开启配置
    properties.mail.smtp.starttls.enable: true
    properties.mail.smtp.starttls.required: true
    properties.mail.smtp.ssl.enable: true
    properties.mail.smtp.debug: true
    default-encoding: utf-8    #邮件编码方式





package com.example.demo;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;

@SpringBootTest
class DemoApplicationTests {

    @Autowired(required = false)
    private JavaMailSender javaMailSender;

    @Test
    void contextLoads() {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom("296xxx4610@qq.com"); //发送方
        message.setTo("286xxx897@qq.com"); //接收方
        message.setSubject("恭喜你中奖了,一台洗衣机");
        message.setText("请及时领取!");
        javaMailSender.send(message);
    }
    
    @Test
    void sendComplexMail() throws MessagingException {
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
        helper.setFrom("296xxx4610@qq.com");
        helper.setTo("2725xxx473@qq.com");
        helper.setSubject("王者官方");
        String t1 = "<html><body><h3>国庆赠送皮肤,请注意及时查收!<h3>";
        String t2 = "<img src='cid:aa' height='400px'";
        String t3 = "</body></html>";
        helper.setText(t1 + t2 + t3, true);
        helper.addInline("aa", new File("C:\\Users\\CodeHaywire\\Desktop\\aa.png"));
        // helper.addAttachment();
        javaMailSender.send(mimeMessage);
    }

}

over