[feature/56-sendMail] 쥬스레터 발송 API

build.gradle

@@ -47,6 +47,10 @@ dependencies {
 
     implementation 'com.googlecode.json-simple:json-simple:1.1.1'
 
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation 'org.springframework.boot:spring-boot-starter-mail'
+
+
 }
 
 tasks.named('test') {

src/main/java/com/ewhatever/qna/common/Base/BaseResponseStatus.java

@@ -68,7 +68,8 @@ public enum BaseResponseStatus {
     /**
      * 4000: DB, Server 오류
      */
-    DATABASE_ERROR(false, 4000, "데이터베이스 연결에 실패했습니다.");
+    DATABASE_ERROR(false, 4000, "데이터베이스 연결에 실패했습니다."),
+    MAIL_DELIVERY_ERROR(false, 4001, "쥬스레터 메일 발송에 실패했습니다.");
 
     private final boolean isSuccess;
     private final int code;

src/main/java/com/ewhatever/qna/mail/MailController.java

@@ -0,0 +1,30 @@
+package com.ewhatever.qna.mail;
+
+import com.ewhatever.qna.comment.dto.PostCommentReq;
+import com.ewhatever.qna.comment.service.CommentService;
+import com.ewhatever.qna.common.Base.BaseException;
+import com.ewhatever.qna.common.Base.BaseResponse;
+import com.ewhatever.qna.mail.dto.MailDto;
+import com.ewhatever.qna.mail.service.MailService;
+import jakarta.mail.MessagingException;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import static com.ewhatever.qna.common.Base.BaseResponseStatus.SUCCESS;
+
+@RequestMapping("/letter")
+@RestController
+@RequiredArgsConstructor
+public class MailController {
+
+    private final MailService mailService;
+
+    @ResponseBody
+    @PostMapping
+    public BaseResponse<String> addComment(@RequestBody MailDto mailDto) throws BaseException {
+        mailService.sendMail(mailDto);
+        return new BaseResponse<>(SUCCESS);
+    }
+
+}

src/main/java/com/ewhatever/qna/mail/dto/MailDto.java

@@ -0,0 +1,14 @@
+package com.ewhatever.qna.mail.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Builder
+public class MailDto {
+    private String title;
+    private String contentTitle;
+    private String content;
+}

src/main/java/com/ewhatever/qna/mail/service/MailService.java

@@ -0,0 +1,68 @@
+package com.ewhatever.qna.mail.service;
+
+import com.ewhatever.qna.common.Base.BaseException;
+import com.ewhatever.qna.mail.dto.MailDto;
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.thymeleaf.context.Context;
+import org.thymeleaf.spring6.SpringTemplateEngine;
+
+import java.util.HashMap;
+
+import static com.ewhatever.qna.common.Base.BaseResponseStatus.MAIL_DELIVERY_ERROR;
+
+@Service
+@AllArgsConstructor
+@Slf4j
+public class MailService {
+
+    private JavaMailSender emailSender;
+    private final SpringTemplateEngine templateEngine;
+
+    @Async
+    public void sendMail(MailDto mailDto) throws BaseException {
+
+        log.info("*** 메일 전송 시작 ***");
+
+        try{
+            MimeMessage message = emailSender.createMimeMessage();
+            MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
+
+            //메일 제목 설정
+            helper.setSubject(mailDto.getTitle());
+
+            //TODO : DB에서 읽어와서 나중에 구독한 사람들로 설정하기
+            helper.setTo(new String[]{"hahaha329@ewhain.net"});
+
+            //템플릿에 전달할 데이터 설정
+            HashMap<String, String> emailValues = new HashMap<>();
+            emailValues.put("title", mailDto.getContentTitle());
+            emailValues.put("content", mailDto.getContent());
+
+
+            Context context = new Context();
+            emailValues.forEach((key, value)->{
+                context.setVariable(key, value);
+            });
+
+            //메일 내용 설정 : 템플릿 프로세스
+            String html = templateEngine.process("juiceLetter", context);
+            helper.setText(html, true);
+
+            //메일 보내기
+            emailSender.send(message);
+        } catch(MessagingException e) {
+            throw new BaseException(MAIL_DELIVERY_ERROR);
+        }
+
+            log.info("*** 메일 전송 완료 ***");
+
+
+    }
+}

src/main/resources/templates/juiceLetter.html

@@ -0,0 +1,146 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8" />
+    <title>Title</title>
+</head>
+<body>
+<div style="max-width: 595px; margin: 0 auto;">
+    <table
+            cellpadding="0"
+            cellspacing="0"
+            style="
+          width: 100%;
+          margin: 0 auto;
+          background-color: #fff;
+          -webkit-text-size-adjust: 100%;
+          text-align: left;
+        "
+    >
+        <tbody>
+        <tr>
+            <td colspan="3" height="30"></td>
+        </tr>
+        <tr>
+            <td width="21"></td>
+            <td>
+                <table
+                        cellpadding="0"
+                        cellspacing="0"
+                        style="width: 100%; margin: 0; padding: 0;"
+                >
+                    <tbody>
+                    <tr>
+                        <td style="margin: 0; padding: 0;">
+                            <a
+                                    href="https://ewhatever-front.vercel.app/"
+                                    rel="noreferrer noopener"
+                                    target="_blank"
+                            ><img
+                                    src="https://github.com/Haeun-Y/gyeo-bang-al/assets/70390323/43e23443-7ca3-48a7-ab1f-9d0fc2d64e85"
+                                    width="160"
+                                    height="52"
+                                    alt="Juitcy"
+                                    style="border: 0; margin-right: 5px;"
+                                    loading="lazy"
+                            />
+                            </a>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td height="11"></td>
+                    </tr>
+                    </tbody>
+                </table>
+            </td>
+            <td width="21"></td>
+        </tr>
+
+        <tr>
+            <td width="21"></td>
+            <td>
+                <table
+                        cellpadding="0"
+                        cellspacing="0"
+                        style="width: 100%; margin: 0; padding: 0;"
+                >
+                    <tbody>
+                    <tr>
+                        <td
+                                style="
+                        font-size: 28px;
+                        font-family: '나눔고딕', NanumGothic, '맑은고딕',
+                          Malgun Gothic, '돋움', Dotum, Helvetica,
+                          'Apple SD Gothic Neo', Sans-serif;
+                        color: #424240;
+
+                        line-height: 34px;
+                        vertical-align: top;
+                      "
+                        >
+                      <span style="color: #ff8267;">
+                        <strong>쥬스레터 : </strong></span
+                      >
+                            <strong>"</strong>
+                        </td>
+                        <td
+                                style="
+                        font-size: 28px;
+                        font-family: '나눔고딕', NanumGothic, '맑은고딕',
+                          Malgun Gothic, '돋움', Dotum, Helvetica,
+                          'Apple SD Gothic Neo', Sans-serif;
+                        color: #424240;
+
+                        line-height: 34px;
+                        vertical-align: top;
+                      "
+                                th:text="${title}"
+                        >
+                            <strong>"</strong>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td height="13"></td>
+                    </tr>
+                    <tr>
+                        <td height="22"></td>
+                    </tr>
+                    </tbody>
+                </table>
+            </td>
+            <td width="21"></td>
+        </tr>
+        <tr>
+            <td colspan="3" height="1" style="background: #e5e5e5;"></td>
+        </tr>
+        <tr>
+            <td colspan="3" height="26"></td>
+        </tr>
+        <tr>
+            <td width="21"></td>
+            <td th:text="${content}"></td>
+            <td width="21"></td>
+        </tr>
+        <tr>
+            <td width="21"></td>
+            <td>
+                <img
+                        src="https://github.com/Haeun-Y/gyeo-bang-al/assets/70390323/3307f733-6096-4117-b522-e7a486e972d0"
+                        width="300"
+                        height="415"
+                        alt="Juitcy"
+                        style="border: 0; margin-right: 5px;"
+                        loading="lazy"
+                />
+            </td>
+            <td width="21"></td>
+        </tr>
+        </tbody>
+    </table>
+</div>
+<!--[if mso]>
+</td></tr>
+</table>
+<![endif]-->
+</body>
+</html>