SpringBoot整合JavaMail

1、发送简单邮件

导入依赖

implementation 'org.springframework.boot:spring-boot-starter-mail:3.0.2'

开启相关协议，获取密码~ 我是用的是QQ邮箱，其他的也一样

配置一下mail的相关信息

spring.mail.username=你的QQ@qq.com
spring.mail.password=你的密码
spring.mail.host=smtp.qq.com
# 接收人的邮箱
mail.receiver=xxxxxxx@163.com

编写发送代码

package com.qbb.mail;

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.Component;

/**
 * @author startqbb (个人博客:https://www.cnblogs.com/qbbit)
 * @date 2023-02-08  21:34
 * @tags 喜欢就去努力的争取
 */

@Component
public class SendMail {

    @Autowired
    private JavaMailSender javaMailSender;

    @Value("${spring.mail.username}")
    private String sender;
    @Value("${mail.receiver}")
    private String receiver;
    private String title = "SpringBoot发送邮件";
    private String body = "你好呀,我的宝宝~";

    public void send() {
        SimpleMailMessage mimeMessages = new SimpleMailMessage();
        /**
         * 需要传递四个信息
         * 1、发送人
         * 2、接收人
         * 3、标题
         * 4、主体信息
         */
        mimeMessages.setFrom(sender+("哈哈哈"));
        mimeMessages.setTo(receiver);
        mimeMessages.setSubject(title);
        mimeMessages.setText(body);

        javaMailSender.send(mimeMessages);

        System.out.println("send ......");
    }

}

2、发送复杂邮件(图片、附件...)

其实就是换一个高级点的对象

package com.qbb.mail;

import jakarta.mail.MessagingException;
import jakarta.mail.internet.MimeMessage;
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 java.io.File;

/**
 * @author startqbb (个人博客:https://www.cnblogs.com/qbbit)
 * @date 2023-02-08  21:53
 * @tags 喜欢就去努力的争取
 */
@Component
public class SendComplexMail {

    @Autowired
    private JavaMailSender javaMailSender;

    @Value("${spring.mail.username}")
    private String sender;
    @Value("${mail.receiver}")
    private String receiver;
    private String title = "SpringBoot发送复杂邮件";
    //private String body = "你好呀,我的宝宝,我用代码给我发消息 。 <a href='https://www.baidu.com'>点开有惊喜</a>";
    private String body = "你好呀,我的宝宝,我用代码给我发消息 。 <img src='https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2021%2F1028%2Fba8af181j00r1nr5e002lc000hs011xc.jpg&thumbnail=660x2147483647&quality=80&type=jpg'/>";

    public void send() {
        try {
            MimeMessage mimeMessage = javaMailSender.createMimeMessage();
            /**
             * 需要传递四个信息
             * 1、发送人
             * 2、接收人
             * 3、标题
             * 4、主体信息
             */
            //MimeMessageHelper helper = new MimeMessageHelper(mimeMessage);
            // 第二个参数，开启发送附件
            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);
            helper.setFrom(sender);
            helper.setTo(receiver);
            helper.setSubject(title);
            // 第二个参数，用于开启解析html标签
            helper.setText(body, true);

            // 发送附件
            File f1 = new File("E:\\JavaProject\\study_project\\springboot-javamail\\build\\libs\\springboot-javamail-0.0.1-SNAPSHOT-plain.jar");
            File f2 = new File("E:\\JavaProject\\study_project\\springboot-javamail\\src\\main\\resources\\static\\avatar.ico");
            helper.addAttachment(f1.getName(), f1);
            helper.addAttachment("avatar.jpg", f2);

            javaMailSender.send(mimeMessage);

            System.out.println("send ......");
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }

}