目录

1、创建一个基本的SpringBoot项目，pom文件导入发送邮件的依赖

2、application.yml 文件配置配置邮件发送信息

3、创建IEmailService 接口文件，定义邮件发送的接口

4、创建IEmailService接口的实现类EmailService.java 文件

5、新建邮件发送模板 email.html

6、新建测试类，主要代码如下

7、效果截图

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邮件发送功能基本是每个完整业务系统要集成的功能之一，今天小编给大家介绍一下SpringBoot实现邮件发送功能，希望对大家能有所帮助！

今天主要给大家分享简单邮件发送、HTML邮件发送、包含附件的邮件发送三个例子，具体源码链接在文章末尾，有需要的朋友可以自己下载学习一下。

1、创建一个基本的SpringBoot项目，pom文件导入发送邮件的依赖

<!--邮件发送依赖包-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!--freemarker制作Html邮件模板依赖包-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>

2、application.yml 文件配置配置邮件发送信息

spring:
mail:
host: smtp.qq.com
username: xxx@qq.com  #发件人邮箱
password: xxxxx  #授权码
protocol: smtp
properties.mail.smtp.auth:true
properties.mail.smtp.port:465#发件邮箱端口
properties.mail.display.sendmail: xiaoMing
properties.mail.display.sendname: xiaoming
properties.mail.smtp.starttls.enable:true
properties.mail.smtp.starttls.required:true
properties.mail.smtp.ssl.enable:true#是否启用ssl
default-encoding: utf-8#编码格式    
freemarker:
cache:false
settings:
classic_compatible:true
suffix: .html
charset: UTF-8
template-loader-path: classpath:/templates/

3、创建IEmailService 接口文件，定义邮件发送的接口

package com.springboot.email.email.service;import javax.mail.MessagingException;
import java.util.List;public interface IEmailService {/*** 发送简单文本邮件*/void sendSimpleMail(String receiveEmail, String subject, String content);/*** 发送HTML格式的邮件*/void sendHtmlMail(String receiveEmail, String subject, String emailContent) throws MessagingException;/*** 发送包含附件的邮件*/void sendAttachmentsMail(String receiveEmail, String subject, String emailContent, List<String> filePathList) throws MessagingException;
}

4、创建IEmailService接口的实现类EmailService.java 文件

package com.springboot.email.email.service.impl;import com.springboot.email.email.service.IEmailService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;import javax.annotation.Resource;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;
import java.util.List;
@Service
public class EmailServiceImpl implements IEmailService {@Resourceprivate JavaMailSender mailSender;@Value("${spring.mail.username}")private String fromEmail;/*** 发送简单文本邮件*/public void sendSimpleMail(String receiveEmail, String subject, String content) {SimpleMailMessage message = new SimpleMailMessage();message.setFrom(fromEmail);message.setTo(receiveEmail);message.setSubject(subject);message.setText(content);mailSender.send(message);}/*** 发送Html格式的邮件*/public  void sendHtmlMail(String receiveEmail,String subject,String emailContent) throws MessagingException{init(receiveEmail, subject, emailContent, mailSender, fromEmail);}public static void init(String receiveEmail, String subject, String emailContent, JavaMailSender mailSender, String fromEmail) throws MessagingException {MimeMessage message= mailSender.createMimeMessage();MimeMessageHelper helper=new MimeMessageHelper(message,true);helper.setFrom(fromEmail);helper.setTo(receiveEmail);helper.setSubject(subject);helper.setText(emailContent,true);mailSender.send(message);}/*** 发送包含附件的邮件*/public void sendAttachmentsMail(String receiveEmail, String subject, String emailContent, List<String> filePathList) throws MessagingException {MimeMessage message = mailSender.createMimeMessage();//带附件第二个参数trueMimeMessageHelper helper = new MimeMessageHelper(message, true);helper.setFrom(fromEmail);helper.setTo(receiveEmail);helper.setSubject(subject);helper.setText(emailContent, true);//添加附件资源for (String item : filePathList) {FileSystemResource file = new FileSystemResource(new File(item));String fileName = item.substring(item.lastIndexOf(File.separator));helper.addAttachment(fileName, file);}//发送邮件mailSender.send(message);}
}

5、新建邮件发送模板 email.html

<!DOCTYPE html>
<html>
<head lang="en"><meta charset="UTF-8"/><title></title><style>td {border: black 1px solid;}</style>
</head>
<body>
<h1>工资条</h1>
<table style="border: black 1px solid;width: 750px"><thead><td>序号</td><td>姓名</td><td>基本工资</td><td>在职天数</td><td>奖金</td><td>社保</td><td>个税</td><td>实际工资</td></thead><tbody><tr><td>${salary.index}</td><td>${salary.name}</td><td>${salary.baseSalary}</td><td>${salary.inDays}</td><td>${salary.reward}</td><td>${salary.socialSecurity}</td><td>${salary.tax}</td><td>${salary.actSalary}</td></tr></tbody>
</table>
</body>
</html>

6、新建测试类，主要代码如下

/*** 测试简单文本文件*/
@Test
public void EmailTest() {emailService.sendSimpleMail("hgmyz@outlook.com", "测试邮件", "springboot 邮件测试");
}@Test
public void HtmlEmailTest() throws MessagingException {String receiveEmail = "hgmyz@outlook.com";String subject = "Spring Boot 发送Html邮件测试";String emailContent = "<h2>您好！</h2><p>这里是一封Spring Boot 发送的邮件，祝您天天开心！<img " + "src='https://p3.toutiaoimg.com/origin/tos-cn-i-qvj2lq49k0/a43f0608912a4ecfa182084e397e4b81?from=pc' width='500' height='300' /></p>" + "<a href='https://programmerblog.xyz' title='IT技术分享设社区' targer='_blank'>IT技术分享设社区</a>";emailService.sendHtmlMail(receiveEmail, subject, emailContent);
}@Test
public void templateEmailTest() throws IOException, TemplateException, MessagingException {String receiveEmail = "hgmyz@outlook.com";String subject = "Spring Boot 发送Templete邮件测试";//添加动态数据，替换模板里面的占位符SalaryVO salaryVO = new SalaryVO(1, "小明", 2, 9000.00, 350.06, 280.05, 350.00, 7806.00);Template template = freeMarkerConfigurer.getConfiguration().getTemplate("email.html");//将模板文件及数据渲染完成之后，转换为html字符串Map<String, Object> model = new HashMap<>();model.put("salary", salaryVO);String templateHtml = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);emailService.sendHtmlMail(receiveEmail, subject, templateHtml);
}@Test
public void emailContailAttachmentTest() throws IOException, TemplateException, MessagingException {String receiveEmail = "hgmyz@outlook.com";String subject = "Spring Boot 发送包含附件的邮件测试";//添加动态数据，替换模板里面的占位符SalaryVO salaryVO = new SalaryVO(1, "小王", 2, 9000.00, 350.06, 280.05, 350.00, 7806.00);Template template = freeMarkerConfigurer.getConfiguration().getTemplate("email.html");//将模板文件及数据渲染完成之后，转换为html字符串Map<String, Object> model = new HashMap<>();model.put("salary", salaryVO);String templateHtml = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);List<String> fileList = new ArrayList<>();fileList.add("F:\\邮件测试.docx");fileList.add("F:\\5.png");fileList.add("F:\\db.jpg");emailService.sendAttachmentsMail(receiveEmail, subject, templateHtml, fileList);
}

7、效果截图

简单文版邮件

               

html文件

               

包含附件的邮件

               

Gitee地址：https://gitee.com/hgm1989/springboot-email.git