[Spring] 이메일 전송 구현(구글 이메일)

구글 앱 비밀번호 추가

생성된 앱 비밀번호 확인

gradle.build

dependencies {
	...
	implementation 'org.springframework.boot:spring-boot-starter-mail'
    ...
}

 

application.properties

spring.mail.host=smtp.gmail.com # 이메일 gmail로 사용
spring.mail.port=587
spring.mail.username=your-email@naver.com
spring.mail.password=여기에_앱 비밀번호_입력
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true

 

Controller

package com.travel.api.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.travel.api.service.EmailService;

@RestController
public class EmailController {

    private final EmailService emailService;

    @Autowired
    public EmailController(EmailService emailService) {
        this.emailService = emailService;
    }

    @GetMapping("/email/send")
    public String sendEmail() {
        emailService.sendEmail("to@naver.com", "테스트 이메일", "테스트 내용");
        return "ok";
    }
}

Service

package com.travel.api.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;

@Service
public class EmailService {

    private final JavaMailSender mailSender;

    @Autowired
    public EmailService(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }

    public void sendEmail(String to, String subject, String body) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setTo(to);
        message.setSubject(subject);
        message.setText(body);
        mailSender.send(message);
    }
}

 

API 호출 확인

발신자 이메일 주소로 접속 시, 발송된 것을 확인할 수 있음.