本文最后更新于：March 18, 2022 pm
SpringBoot框架中有两个非常重要的策略：开箱即用和约定优于配置。其设计目的是用来简化新Spring应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置，从而使开发人员不再需要定义样板化的配置。
目录
导入依赖
| <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
|
准备配置
这里以QQ邮箱为例。
先网页登录QQ邮箱→设置→开启相应服务（POP3/SMTP）并生成授权码。再配置：
| spring:
mail:
username: 1111111@qq.com
password: xxxxx
host: smtp.qq.com
properties.mail.smtp.ssl.enable: true
|
邮件模板
📢注意：必须放到 resource/templates 目录下。
codeEmail.html
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| <!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org/">
<head>
<meta charset="UTF-8">
<title>墨水记忆-邮件注册</title>
</head>
<body>
<div style="opacity: 1;">
<div style="background: white;
width: 100%;
max-width: 800px;
margin: auto auto;
border-radius: 5px;
border:#1bc3fb 1px solid;
overflow: hidden;
-webkit-box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.12);
box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.18);">
<header style="overflow: hidden;">
<center>
<img style="width:50%;z-index: 666;" src="https://img-blog.csdnimg.cn/a458bf114f6f4912953f8b73eab00580.png">
</center>
</header>
<div style="padding: 5px 20px; ">
<p style=" position: relative;
color: white;
float: left;
z-index: 999;
background: #1bc3fb;
padding: 5px 30px;
margin: -25px auto 0 ;
box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.30) ">
注册邮件
</p>
<br>
<center>
<h3>
来自 <span style=" text-decoration: none;color: #FF779A;">墨水记忆</span> 的邮件提醒
</h3>
<p style="text-indent:2em;">
您现在正在<a style=" text-decoration: none;color: #1bc3fb " target="_blank" href="http://tothefor.com/" rel="noopener"> 墨水记忆 </a>上进行账号注册。
<br>假如这不是您本人所申请, 则无需理会这封电子邮件。
</p>
<div style="background: #fafafa repeating-linear-gradient(-45deg,#fff,#fff 1.125rem,transparent 1.125rem,transparent 2.25rem);box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);margin:20px 0px;padding:15px;border-radius:5px;font-size:14px;color:#555555;text-align: center; ">
请使用以下验证码完成后续注册流程：<br>
<span style=" color: #c847e3;font-weight: bolder;font-size: 25px;" th:text="${code}"></span><br>
注意:请您在收到邮件5分钟内使用，否则该验证码将会失效。
</div>
<br>
<div style=" text-align: center; ">
<a style="text-transform: uppercase;
text-decoration: none;
font-size: 14px;
background: #cb2edd;
color: #FFFFFF;
padding: 10px;
display: inline-block;
border-radius: 5px;
margin: 10px auto 0;" target="_blank" href="http://tothefor.com/" rel="noopener">墨水记忆｜传送门</a>
</div>
<p style="font-size: 12px;text-align: center;color: #999; ">
最好的记忆不如最淡的墨水。<br>
© 2021 <a style="text-decoration:none; color:#1bc3fb " href="http://tothefor.com/" rel="noopener" target="_blank">墨水记忆</a>
</p>
<p></p>
</center>
</div>
</div>
</body>
</html>
|
邮件发送工具类
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| package com.tothefor.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Component;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import javax.mail.internet.MimeMessage;
@Component
public class emailSend {
@Autowired
private JavaMailSenderImpl javaMailSender;
@Autowired
private TemplateEngine templateEngine;
public void sendEmail(String code,String inMan) throws Exception{
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage,true);
mimeMessageHelper.setSubject("墨水记忆-账号注册");
mimeMessageHelper.setTo(inMan);
mimeMessageHelper.setFrom("2629828909@qq.com");
Context context = new Context();
context.setVariable("code",code);
String process = templateEngine.process("codeEmail", context);
mimeMessageHelper.setText(process,true);
javaMailSender.send(mimeMessage);
}
}
|
不能用 static 修饰方法！！！
调用执行
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| package com.tothefor.controller;
import com.tothefor.utils.emailSend;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class emailController {
@Autowired
private emailSend es;
@GetMapping("/emailSendTo")
public void sends() throws Exception{
es.sendEmail("250","2629828909@qq.com");
System.out.println("okok");
}
}
|
然后再访问 /emailSendTo 即可发送邮件。
