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feat:이메일 인증 추가 (#165)
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‎back/.env.default‎

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CUSTOM__JWT__SECRET_KEY=NEED_TO_SET
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DB_USERNAME=NEED_TO_SET
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DB_PASSWORD=NEED_TO_SET
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MAIL_USERNAME=NEED_TO_SET
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MAIL_PASSWORD=NEED_TO_SET

‎back/build.gradle.kts‎

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implementation("org.springframework.boot:spring-boot-starter-security")
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implementation("org.springframework.boot:spring-boot-starter-web")
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implementation ("org.springframework.boot:spring-boot-starter-data-redis")
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implementation("org.springframework.boot:spring-boot-starter-mail")
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// QueryDSL
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implementation("com.querydsl:querydsl-jpa:5.0.0:jakarta")

‎back/src/main/java/com/back/domain/member/member/email/EmailService.java‎

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package com.back.domain.member.member.email;
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import com.back.global.exception.ServiceException;
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import jakarta.mail.MessagingException;
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import jakarta.mail.internet.MimeMessage;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.mail.javamail.JavaMailSender;
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import org.springframework.mail.javamail.MimeMessageHelper;
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import org.springframework.stereotype.Service;
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import java.io.UnsupportedEncodingException;
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@Slf4j
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@Service
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@RequiredArgsConstructor
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public class EmailService {
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private final JavaMailSender mailSender;
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/**
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* 간단한 텍스트 이메일 발송
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*/
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public void sendSimpleEmail(String to, String subject, String text) {
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try {
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MimeMessage message = mailSender.createMimeMessage();
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MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
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helper.setFrom("[email protected]", "JobMate");
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helper.setTo(to);
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helper.setSubject(subject);
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helper.setText(text, false); // false = plain text
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mailSender.send(message);
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log.info("텍스트 이메일 발송 성공: {}", to);
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} catch (MessagingException | UnsupportedEncodingException e) {
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log.error("텍스트 이메일 발송 실패: {}", to, e);
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throw new ServiceException("500-1", "텍스트 이메일 발송에 실패했습니다.");
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}
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}
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/**
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* HTML 이메일 발송
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*/
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public void sendHtmlEmail(String to, String subject, String htmlContent) {
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try {
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MimeMessage message = mailSender.createMimeMessage();
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MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
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helper.setFrom("[email protected]", "JobMate");
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helper.setTo(to);
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helper.setSubject(subject);
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helper.setText(htmlContent, true); // true = HTML
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mailSender.send(message);
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log.info("HTML 이메일 발송 성공: {}", to);
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} catch (MessagingException | UnsupportedEncodingException e) {
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log.error("HTML 이메일 발송 실패: {}", to, e);
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throw new ServiceException("500-2", "HTML 이메일 발송에 실패했습니다.");
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}
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}
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/**
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* 인증번호 이메일 발송 (멘토 회원가입용)
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*/
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public void sendVerificationCode(String to, String verificationCode) {
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String subject = "[FiveLogic] 멘토 회원가입 인증번호";
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String htmlContent = buildVerificationEmailHtml(verificationCode);
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sendHtmlEmail(to, subject, htmlContent);
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}
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/**
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* 인증번호 이메일 HTML 템플릿
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*/
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private String buildVerificationEmailHtml(String verificationCode) {
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return """
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<style>
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body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; }
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.container { max-width: 600px; margin: 0 auto; padding: 20px; }
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.header { background-color: #4CAF50; color: white; padding: 20px; text-align: center; }
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.content { padding: 30px; background-color: #f9f9f9; }
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.code-box { background-color: #fff; border: 2px solid #4CAF50; padding: 20px; text-align: center; margin: 20px 0; }
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.code { font-size: 32px; font-weight: bold; color: #4CAF50; letter-spacing: 5px; }
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.footer { text-align: center; padding: 20px; color: #666; font-size: 12px; }
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<h1>JobMate 멘토 회원가입</h1>
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</div>
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<div class="content">
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<h2>인증번호 확인</h2>
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<p>안녕하세요. FiveLogic입니다.</p>
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<p>멘토 회원가입을 위한 인증번호를 안내드립니다.</p>
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<p>아래 인증번호를 입력하여 회원가입을 완료해주세요.</p>
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<div class="code-box">
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<div class="code">%s</div>
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</div>
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<p><strong>※ 인증번호는 5분간 유효합니다.</strong></p>
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<p>본인이 요청하지 않은 경우, 이 메일을 무시하셔도 됩니다.</p>
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</div>
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<div class="footer">
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<p>© 2025 FiveLogic. All rights reserved.</p>
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</div>
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</div>
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</body>
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</html>
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""".formatted(verificationCode);
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}
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}

‎back/src/main/java/com/back/domain/member/member/verification/EmailVerificationService.java‎

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package com.back.domain.member.member.verification;
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import com.back.domain.member.member.email.EmailService;
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import com.back.global.exception.ServiceException;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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@Slf4j
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public class EmailVerificationService {
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private final VerificationCodeStore codeStore;
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private final EmailService emailService;
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private static final Duration CODE_TTL = Duration.ofMinutes(5);
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private static final SecureRandom random = new SecureRandom();
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// 저장
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codeStore.saveCode(email, code, CODE_TTL);
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// TODO: 실제 이메일 발송 로직 추가 (JavaMailSender)
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log.info("Generated verification code for {}: {}", email, code);
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// 이메일 발송
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emailService.sendVerificationCode(email, code);
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log.info("Generated and sent verification code for {}: {}", email, code);
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return code; // 테스트용으로 반환 (실제로는 이메일로만 전송)
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}

‎back/src/main/resources/application.yml‎

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use_sql_comments: true
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default_batch_fetch_size: 100
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open-in-view: false
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mail:
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host: smtp.gmail.com
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port: 587
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username: ${MAIL_USERNAME}
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password: ${MAIL_PASSWORD}
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properties:
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mail:
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smtp:
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auth: true
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starttls:
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enable: true
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required: true
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connectiontimeout: 5000
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timeout: 5000
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writetimeout: 5000
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springdoc: #Swagger ??
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default-produces-media-type: application/json;charset=UTF-8

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