springboot发送邮件

中国加油，武汉加油！

篇幅较长，配合右边目录观看

项目准备

创建springboot项目springboot-email
导入Web的springWeb依赖和Lombox依赖

导入依赖

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

1. 案例（发送简单的文本邮件）

1.1 配置相关参数

spring.mail.host=smtp.qq.com
[email protected]
spring.mail.password=
spring.mail.default-encoding=UTF-8

password是授权码，可在QQ邮箱设置里面生成
在这里插入图片描述

1.2 定义一个Mail对象

package com.wpj.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Mail {
    private String to;
    private String subject;
    private String text;
}

1.3 定义完成发送邮件的Service

package com.wpj.service;

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.Service;

@Service
public class MailService {

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

    @Autowired
    private JavaMailSender javaMailSender;

    public void sendSimpleMail(String to, String subject, String text) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setTo(to);
        message.setSubject(subject);
        message.setText(text);
        message.setFrom(from);

        javaMailSender.send(message);

    }
}

1.4 新建一个发送邮件的页面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <base th:href="${#request.getContextPath()+'/'}">
</head>
<body>

    <form action="/sendMail" method="post">
        发给谁：<input type="text" name="to"><br />
        主题： <input type="text" name="subject"><br />
        内容： <input type="text" name="text"><br />
        <input type="submit" value="发送">
    </form>
</body>
</html>

1.5 定义一个Controller

package com.wpj.controller;

import com.wpj.pojo.Mail;
import com.wpj.service.MailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class MailController {

    @Autowired
    private MailService mailService;

    @RequestMapping("/sendMail")
    @ResponseBody
    public String sendMail(Mail mail){
        mailService.sendSimpleMail(mail.getTo(),mail.getSubject(),mail.getText());
        return "发送成功";
    }
}

1.6 启动主启动类

package com.wpj;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class EmailApplication {

    public static void main(String[] args) {
        SpringApplication.run(EmailApplication.class, args);
    }

}