发送邮件

添加依赖

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

application.yml配置

#邮件发送
spring:
  mail:
      host: smtp.qq.com
      username: 438562332@qq.com
      password:     #此处填写授权码，不是密码
      protocol: smtp #发送邮件协议
    properties.mail.smtp.auth: true
    properties.mail.smtp.port: 465 #端口号465或587或25
    properties.mail.display.sendmail: Javen #可以任意
    properties.mail.display.sendname: Spring Boot Guide Email #可以任意
    properties.mail.smtp.starttls.enable: true
    properties.mail.smtp.starttls.required: true
    properties.mail.smtp.ssl.enable: true
    default-encoding: utf-8    #默认就是UTF-8，不用配置
    from: xx@qq.com #与上面的username保持一致，发送人

发送邮件的类

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;
import javax.mail.internet.MimeMessage;

@Component
public class SendMail {

    @Autowired
    private JavaMailSender jmsi;

    /**
     * 发送邮件 - 异步发送
     * 使用@Async注解，需要在启动类加上@EnableAsync注解才能生效
     * @param to - 传入收件人数组
     * @param str - 传入消息体，也可使html拼接的字符串
     */
    @Async
    public void sendMail(String [] to,String str){
        try {
            MimeMessage message = jmsi.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, false);//false即为不携带附件
            helper.setTo(to);
            helper.setFrom("438562332@qq.com");//发件人
            helper.setSubject("主题");//邮件标题
            helper.setText(str, true);//true代表没有附件
            jmsi.send(message);//发送
            System.out.println("发送完毕！！！");
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}