使用spring实现发送邮件功能

1、引入jar包

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
    <version>2.3.4.RELEASE</version>
</dependency>

2、修改配置文件

spring
  mail:
    default-encoding: utf-8
    host: smtp.qq.com
    username: xxx@qq.com
    password: xasdasdjk

password为授权码，在qq邮箱
设置 => 账户 => POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务
开启 POP3/SMTP服务 即可获取到授权码

3、创建发送邮件工具类

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Component;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

@Component
public class EmailUtil {
    private static final Logger logger = LoggerFactory.getLogger(EmailUtil.class);

    @Autowired
    private JavaMailSender mailSender;

    @Value("${spring.mail.username}")
    private String from;

    public void sendMail(String to, String subject, String content) throws Exception {
            MimeMessage message = mailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);
            mailSender.send(helper.getMimeMessage());
    }
}

4、使用

    @Autowired
    private EmailUtil emailUtil;
    public void sendMessage() {
        emailUtil.sendMail("yyy@qq.com","主题","内容");
    }