1.邮件发送流程:

发件方:a@qq.com(简写,为了马赛克)
收件方:b@163.com(简写,为了马赛克)
2.配置pom.xml
<!--mail-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
<version>2.4.0</version>
</dependency>
3.登录QQ邮箱,开启pop3和smtp服务
发送短信后,点击【我已发送】会生成一串密码,将此密码填入application.yml中的
spring:
mail:
password: wlcfnoewxzuebabc


4.配置application.yml
#配置邮箱验证
spring:
mail:
default-encoding: UTF-8
host: smtp.qq.com
username: a@qq.com
password: wlcfnoewxzuebabc
#指定端口,QQ邮箱默认
port: 465
5.编写测试方法
package com.shiyun.common;
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.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import javax.mail.internet.MimeMessage;
import java.io.File;
/**
* Classname:MailTest
* @description:测试右键的发送
* @author: 陌意随影
* @Date: 2021-02-01 22:20
* @Version: 1.0
**/
@SpringBootTest
public class MailTest {
//在使用的时候JavaMailSenderImpl需要用springboot的ioc容器注入。
@Autowired
JavaMailSenderImpl mailSender;
@Test
public void contextLoads() {
SimpleMailMessage message = new SimpleMailMessage();
message.setSubject("今晚开会");
message.setText("大家,好!\n今晚7:30在教学楼201开班委会,请各位班委准时参加! \n谢谢!");
message.setTo("b@163.com");
message.setFrom("a@qq.com");
mailSender.send(message);
}
@Test
public void test2() throws Exception{
MimeMessage mimeMessage = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);
helper.setSubject("今晚开会");
helper.setText("大家,好!<br> <b style='color:red'>今晚7:30在教学楼201开班委会,请各位班委准时参加!</b> <br>谢谢!",true);
helper.setTo("b@163.com");
helper.setFrom("a@qq.com");
//添加附件
helper.addAttachment("会议说明.txt",new File("C:\\Users\\Dylan\\Pictures\\会议说明.txt"));
helper.addAttachment("会议图片.jpg",new File("C:\\Users\\Dylan\\Pictures\\会议图片.jpg"));
mailSender.send(mimeMessage);
}
}
6.运行测试方法

可见邮件能够正常发送。