[SpringBoot JSP] - ajax로 이메일 보내기 & 설정 (Intellij)

1. jsp

2. java script

3. ajax 통신

 

4. MailDto 작성

@Builder
@Data
@RequiredArgsConstructor
@AllArgsConstructor
public class MailDto {
    private String email;
    private String subject;
    private String contents;
}

 

5. MailConfig 작성(설정)

package com.example.crud.config;

import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;
import java.io.IOException;

public class MailConfig {

    private final JavaMailSender sender;
    private final MimeMessage mimeMessage;
    private final MimeMessageHelper mimeMessageHelper;

    public MailConfig(JavaMailSender javaMailSender) throws MessagingException {
        this.sender = javaMailSender;
        this.mimeMessage = javaMailSender.createMimeMessage();
        this.mimeMessageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
    }

    public void setFrom(String fromAddress) throws MessagingException {
        mimeMessageHelper.setFrom(fromAddress);
    }

    public void setTo(String email) throws MessagingException {
        mimeMessageHelper.setTo(email);
    }

    public void setSubject(String subject) throws MessagingException {
        mimeMessageHelper.setSubject(subject);
    }

    public void setText(String text, boolean useHtml) throws MessagingException {
        mimeMessageHelper.setText(text, useHtml);
    }

    public void setAttach(String fileName, String path) throws MessagingException, IOException {
        File file = new ClassPathResource(path).getFile();
        FileSystemResource fsr = new FileSystemResource(file);

        mimeMessageHelper.addAttachment(fileName, fsr);
    }

    public void setInline(String fileName, String path) throws MessagingException, IOException {
        File file = new ClassPathResource(path).getFile();
        FileSystemResource fileSystemResource = new FileSystemResource(file);

        mimeMessageHelper.addInline(fileName, fileSystemResource);
    }

    public void send() {
        sender.send(mimeMessage);
    }
}

 

5. build.gradle

implementation 'org.springframework.boot:spring-boot-starter-mail:2.6.3'

 

6. MailService 작성

package com.example.crud.service.api;

import com.example.crud.config.MailConfig;
import com.example.crud.domain.MailDto;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;

import javax.mail.MessagingException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@RequiredArgsConstructor
@Service
public class MailService {

    private final JavaMailSender javaMailSender;

    /**
     * 기본적으로 1명에게 보냄
     * @param mailDto
     * @return
     */
    public void sendMail(MailDto mailDto) throws MessagingException, IOException {
        MailConfig MailConfig = new MailConfig(javaMailSender);

        MailConfig.setTo(mailDto.getEmail());
        MailConfig.setSubject(mailDto.getSubject());

//        String htmlContent = "<p>" + "메세지" + "<p> <img src='cid:google-logo'>";
        String htmlContent = mailDto.getContents();
        MailConfig.setText(htmlContent, true);
        MailConfig.send();
    }

    /**
     * 여러명 보내기
     */
    public void sendMailToPeople(){
        List<String> toUserList = new ArrayList<>();
        toUserList.add("m_veloper@naver.com");
        toUserList.add("수신대상@naver.com");
        toUserList.add("수신대상@naver.com");
        toUserList.add("수신대상@naver.com");
        toUserList.add("수신대상@naver.com");

        int toUserSize = toUserList.size();

        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        simpleMailMessage.setTo((String[]) toUserList.toArray(new String[toUserSize]));
        simpleMailMessage.setSubject("제목 샘플");
        simpleMailMessage.setText("내용");
        javaMailSender.send(simpleMailMessage);
    }

//    public void sendMailWithFiles(String email) throws MessagingException, IOException {
//        MailConfig MailConfig = new MailConfig(javaMailSender);
//
//        MailConfig.setTo(email);
//        MailConfig.setSubject("제목");
//
//        String htmlContent = "<p>" + "메세지" + "<p> <img src='cid:google-logo'>";
//        MailConfig.setText(htmlContent, true);
//
//        // 파일이 있다면
//        MailConfig.setAttach("test.txt", "static/test.txt");
//        MailConfig.setInline("google-logo", "static/google-logo.png");
//        MailConfig.send();
//    }
}

 

7. ajax통신 받는 @RestController

 

ex) 이메일로 랜덤 값을 받고 싶다면

1) bulid.gradle

implementation group: 'org.apache.commons', name: 'commons-lang3', version: '3.0'

2) 숫자,문자 10글자 랜덤

String generatedString = RandomStringUtils.randomAlphanumeric(10);

 

8. application.properties 설정

spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username = gmail 아이디
spring.mail.password = gmail 비밀번호
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true

 

 

(( dbelle만의 정리 부분 ))-------------------------------------------------------------------------------------------------------

//ModelAndView 페이지 경로
//path 지정경로 = location.href
@RequestMapping(path = {""})
public ModelAndView index() {
    return new ModelAndView("index");
}