#6 - 6차 세미나 실습 과제 제출

[ckkim817]

📟 관련 이슈

• Resolved: 6차 세미나 실습 과제 - Access Token 재발급 로직 구현하기 #5

💻 과제 내용

로그인 진행 시 Access Token과 Refresh Token을 함께 반환하는 로직을 구현합니다.

1. RedisConfig 추가

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/config/RedisConfig.java

Lines 12 to 35 in f7b1a3b

	@Configuration
	public class RedisConfig {
	@Value("${spring.data.redis.host}")
	private String host;
	@Value("${spring.data.redis.port}")
	private int port;
	@Bean
	public RedisConnectionFactory redisConnectionFactory() {
	return new LettuceConnectionFactory(host, port);
	}
	@Bean
	public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
	RedisTemplate<String, Object> template = new RedisTemplate<>();
	template.setConnectionFactory(connectionFactory);
	template.setKeySerializer(new StringRedisSerializer());
	template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
	return template;
	}
	}

2. 가입 시 Refresh Token을 추가로 반환

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/service/dto/UserJoinResponse.java

Lines 3 to 15 in f7b1a3b

	public record UserJoinResponse(
	String accessToken,
	String refreshToken,
	String userId
	) {
	public static UserJoinResponse of(
	String accessToken,
	String refreshToken,
	String userId
	) {
	return new UserJoinResponse(accessToken, refreshToken, userId);
	}
	}

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/service/MemberService.java

Lines 28 to 45 in f7b1a3b

	@Transactional
	public UserJoinResponse createMember(
	MemberCreateDTO memberCreateDTO
	) {
	Member member = memberRepository.save(
	Member.create(memberCreateDTO.name(), memberCreateDTO.part(), memberCreateDTO.age())
	);
	Long memberId = member.getId();
	String accessToken = jwtTokenProvider.issueAccessToken(
	UserAuthentication.createUserAuthentication(memberId)
	);
	String refreshToken = jwtTokenProvider.issueRefreshToken(
	UserAuthentication.createUserAuthentication(memberId)
	);
	redisTokenRepository.save(Token.of(memberId, refreshToken));
	return UserJoinResponse.of(accessToken, refreshToken, memberId.toString());
	}

3. 결과

Refresh Token으로 Access Token을 재발급 받는 로직 구현합니다. (Redis 활용)

1. DTO 정의

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/service/dto/AccessTokenDTO.java

Lines 3 to 9 in 8806e9f

	public record AccessTokenDTO(
	String accessToken
	) {
	public static AccessTokenDTO of(String accessToken) {
	return new AccessTokenDTO(accessToken);
	}
	}

2. TokenService 및 JwtTokenProvider에 새 액세스 토큰하는 메서드 작성

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/service/TokenService.java

Lines 13 to 31 in 8806e9f

	@Service
	@RequiredArgsConstructor
	public class TokenService {
	private final RedisTokenRepository redisTokenRepository;
	private final JwtTokenProvider jwtTokenProvider;
	@Transactional
	public AccessTokenDTO reissueAccessToken(Long userId) {
	Token token = redisTokenRepository.findById(userId).orElseThrow(
	() -> new UnauthorizedException(ErrorMessage.MEMBER_NOT_FOUND)
	);
	jwtTokenProvider.validateToken(token.getRefreshToken());
	String newAccessToken = jwtTokenProvider.newAccessToken(token.getRefreshToken());
	return AccessTokenDTO.of(newAccessToken);
	}
	}

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/common/jwt/JwtTokenProvider.java

Lines 88 to 94 in 8806e9f

	public String newAccessToken(String refreshToken) {
	Claims claims = getBody(refreshToken);
	Long userId = Long.valueOf(claims.get(USER_ID).toString());
	Authentication authentication = UserAuthentication.createUserAuthentication(userId);
	return issueAccessToken(authentication);
	}

3. TokenController 작성

ckkim817/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/controller/TokenController.java

Lines 14 to 31 in 8806e9f

	@Transactional
	@RestController
	@RequiredArgsConstructor
	@RequestMapping("/api/v1/token")
	public class TokenController {
	private final TokenService tokenService;
	private final PrincipalHandler principalHandler;
	@PostMapping("/reissue")
	public ResponseEntity<AccessTokenDTO> reissueAccessToken() {
	Long userId = principalHandler.getUserIdFromPrincipal();
	AccessTokenDTO newAccessTokenResponse = tokenService.reissueAccessToken(userId);
	return ResponseEntity.status(HttpStatus.CREATED)
	.body(newAccessTokenResponse);
	}
	}

4. 결과

🤔 구현 고민 사항

• 알고 계셨나요? Token 엔티티에 @NoArgsConstructor 어노테이션을 지정해주지 않으면 MappingException이 발생한다는 사실? 저는 2시간 만에 알아냈습니다 ..