1.在pom.xml文件中添加mail依赖包

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


2.在application.properties配置文件中添加mail的配置信息

#sprintboot mail
#spring.mail.host=smtp.163.com
#spring.mail.username=username@163.com
#spring.mail.password=password
spring.mail.host=smtp.qq.com
#\u7528\u6237\u540D
spring.mail.username=88888888@qq.com
#\u6388\u6743\u7801
spring.mail.password=dddfsfdcfddveadf
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

3.MailControl

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("mail")
public class MailControl {
@Autowired
private JavaMailSender javaMailSender;

@Value("${spring.mail.username}")
private String username;
@RequestMapping("send")
public String testSendSimple() {
SimpleMailMessage message = new SimpleMailMessage();
System.out.println(username);
message.setFrom(username);
message.setTo("123456@qq.com");
message.setSubject("标题");
message.setText("springboot");
javaMailSender.send(message);
return message+"";
}
}

4.启动springboot访问:http://localhost:8080/mail/send就可以发送邮件了