springboot实现邮件发送功能

本想使用网易，结果使用465端口尝试了半天，老是提示无法连接，后面说是要开通vip,果断放弃，本次教程使用是qq邮箱，端口号是587,之所以这样是阿里云服务器无法使用25端口发送邮件了

废话不多说直接贴效果图

 邮件发送的日志打印

 pom文件

  <!--引入junit单元测试依赖-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--下面是springboot实现邮件发送的相关依赖-->
        <!--springboot整合邮件发送-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>
        <!--引入thymeleaf依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--添加fastjson依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.70</version>
        </dependency>

　　springboot使用的版本

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.0</version>
        <relativePath/>
    </parent>

　　配置文件

server.port=8081


spring.mail.host=smtp.qq.com
spring.mail.port=587
[email protected]
spring.mail.password=123
spring.mail.default-encoding=UTF-8
spring.mail.properties.mail.smtp.socketFactoryClass=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.debug=true

package com.mail.service;

import com.alibaba.fastjson.JSONObject;

/**
 * @Description:
 * @Author: Yourheart
 * @Create: 2023/1/29 15:35
 */
public interface MailService {

    /**
     * 邮件发送
     * @param title
     * @param content
     * @param targetAddress
     */
     void sendEmail(String title,String content,String targetAddress);

    /**
     * 使用thymeleaf的形式发送邮件
     * @param jsonObject
     */
     void sendThymeleafMail(JSONObject jsonObject);
}

package com.mail.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.mail.service.MailService;
import lombok.extern.slf4j.Slf4j;
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.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.thymeleaf.context.Context;
import org.thymeleaf.spring5.SpringTemplateEngine;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.util.Date;

/**
 * @Description:
 * @Author: Yourheart
 * @Create: 2023/1/29 15:36
 */
@Service
@Slf4j
public class UniversalServiceImpl implements MailService {

    @Autowired
    private JavaMailSender javaMailSender;

    @Autowired
    private SpringTemplateEngine templateEngine;


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


    /**
     * 邮件发送
     *
     * @param title
     * @param content
     * @param targetAddress
     */
    @Override
    public void sendEmail(String title, String content, String targetAddress) {
        SimpleMailMessage msg = new SimpleMailMessage();    //构建一个邮件对象
        msg.setSubject(title); // 设置邮件主题
        msg.setFrom(fromMail); // 设置邮箱发送者
        msg.setTo(targetAddress); // 设置邮件接收者，可以有多个接收者
        msg.setSentDate(new Date());    // 设置邮件发送日期
        msg.setText(content);   // 设置邮件的正文
        javaMailSender.send(msg);

    }

    /**
     * 使用thymeleaf的形式发送邮件
     *
     * @param jsonObject
     */
    @Override
    public void sendThymeleafMail(JSONObject jsonObject) {
        try {
            MimeMessage mimeMessage = javaMailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);
            helper.setSubject(jsonObject.getString("title"));
            helper.setFrom(fromMail);
            helper.setTo(jsonObject.getString("toAddress"));
            helper.setSentDate(new Date());
            Context context = new Context();
            context.setVariable("bankName",jsonObject.getString("bankName"));
            context.setVariable("endCard",jsonObject.getString("endCard"));
            context.setVariable("times",jsonObject.getString("times"));
            context.setVariable("TheAmountOf",jsonObject.getString("TheAmountOf"));
            String process = templateEngine.process("mail.html",context);
            helper.setText(process,true);
            javaMailSender.send(mimeMessage);
        } catch (MessagingException e) {
            e.printStackTrace();
        }

    }
}

　　测试类

package com.mail;

import com.alibaba.fastjson.JSONObject;
import com.mail.entity.MimeMessageDTO;
import com.mail.service.MailService;
import com.mail.service.SendMailsService;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
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.test.context.junit4.SpringRunner;

import java.util.Date;

import static org.junit.Assert.*;

@RunWith(SpringRunner.class)
@SpringBootTest
@Slf4j
public class MailApplicationTest {

    @Autowired
    private MailService mailService;

    @Test
    public void test(){
        //开始邮件发送
        JSONObject jsonObject=new JSONObject();
        jsonObject.put("title","信用卡电子账单");
        jsonObject.put("toAddress","[email protected]");
        jsonObject.put("bankName","测试001");
        jsonObject.put("endCard","1234");
        jsonObject.put("times","2023-01-29 15:44:00");
        jsonObject.put("TheAmountOf","234");
        mailService.sendThymeleafMail(jsonObject);
    }

}

　　同时使用了页面

 mail.html前端代码

<!DOCTYPE html>
<html lang="zh-CN" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Thymeleaf邮件模板</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div class="container">
    <h1><span th:text="${bankName}"></span>信用卡电子账单</h1>
    <table class="table">
        <tr>
        <td>个人消费卡账户<span th:text="${endCard}"></span></td>
        <td>还款日<span th:text="${times}"></span></td>
        </tr>
        <tr>
        <td>已出账单</td>
        <td>￥<span th:text="${TheAmountOf}"></span>
         </td>
        </tr>
    </table>
</div>

</body>
</html>

　　以上是全部代码