1. 邮件发送需要引入spring-boot-starter-mail
   pom.xml引入

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

2. Spring Boot 自动配置MailSenderAutoConfiguration

3. L定义MailProperties内容，配置在application.properties中

spring.mail.username=[email protected]
spring.mail.password=gtstkoszjelabijb
spring.mail.host=smtp.qq.com
spring.mail.properties.mail.smtp.ssl.enable=true

4. 自动装配JavaMailSender，测试邮件发送

package com.zcy;


import org.junit.Test;
import org.junit.runner.RunWith;
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 org.springframework.test.context.junit4.SpringRunner;

import javax.mail.internet.MimeMessage;
import java.io.File;

@RunWith(SpringRunner.class)
@SpringBootTest
public class Springboot04TaskApplicationTests {

	@Autowired
	JavaMailSenderImpl mailSender;




	@Test
	public void contextLoads() {
		SimpleMailMessage message = new SimpleMailMessage();
		//邮件设置
		message.setSubject("通知-今晚开会");
		message.setText("今晚7:30开会");

		message.setTo("[email protected]");
		message.setFrom("[email protected]");

		mailSender.send(message);
	}

	@Test
	public void test02() throws  Exception{
		//1、创建一个复杂的消息邮件
		MimeMessage mimeMessage = mailSender.createMimeMessage();
		MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);

		//邮件设置
		helper.setSubject("通知-今晚开会");
		helper.setText("<b style='color:red'>今天 7:30 开会</b>",true);

		helper.setTo("[email protected]");
		helper.setFrom("[email protected]");

		//上传文件
		helper.addAttachment("1.jpg",new File("C:\\Users\\lfy\\Pictures\\Saved Pictures\\1.jpg"));
		helper.addAttachment("2.jpg",new File("C:\\Users\\lfy\\Pictures\\Saved Pictures\\2.jpg"));

		mailSender.send(mimeMessage);

	}

}