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Merge pull request #17 from T1F5/feature/#10
feat: 카카오 로그인 구현
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‎.gitignore

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### VS Code ###
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.vscode/
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### yml ###
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/src/main/resources/application*.yml

‎build.gradle

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runtimeOnly 'com.h2database:h2'
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runtimeOnly 'com.mysql:mysql-connector-j'
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// security
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implementation 'org.springframework.boot:spring-boot-starter-security'
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implementation 'org.springframework.boot:spring-boot-starter-oauth2-client'
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// Validation
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implementation 'org.springframework.boot:spring-boot-starter-validation'
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// Redis
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// implementation 'org.springframework.boot:spring-boot-starter-data-redis'
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// Actuator
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implementation 'org.springframework.boot:spring-boot-starter-actuator'
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// Querydsl
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implementation 'com.querydsl:querydsl-jpa:5.0.0:jakarta'
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// JWT
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implementation 'io.jsonwebtoken:jjwt-api:0.11.5'
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runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.5'
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runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.11.5'
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annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
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annotationProcessor "com.querydsl:querydsl-apt:5.0.0:jakarta"

‎src/main/java/com/unit/daybook/domain/.gitkeep

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‎src/main/java/com/unit/daybook/domain/auth/common/OAuthApiClient.java

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package com.unit.daybook.domain.auth.common;
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import com.unit.daybook.domain.auth.dto.request.OauthProvider;
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public interface OAuthApiClient {
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OauthProvider oAuthProvider();
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String requestAccessToken(OAuthLoginParams params);
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OAuthInfoResponse requestOAuthInfo(String accessToken);
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}

‎src/main/java/com/unit/daybook/domain/auth/common/OAuthInfoResponse.java

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package com.unit.daybook.domain.auth.common;
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import com.unit.daybook.domain.auth.dto.request.OauthProvider;
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public interface OAuthInfoResponse {
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String getSnsId();
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String getEmail();
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String getNickname();
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OauthProvider getOAuthProvider();
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String getProfileImageUrl();
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String getGender();
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String getBirthday();
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String getAgeRange();
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}

‎src/main/java/com/unit/daybook/domain/auth/common/OAuthLoginParams.java

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package com.unit.daybook.domain.auth.common;
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import org.springframework.util.MultiValueMap;
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import com.unit.daybook.domain.auth.dto.request.OauthProvider;
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public interface OAuthLoginParams {
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OauthProvider oAuthProvider();
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MultiValueMap<String, String> makeBody();
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}

‎src/main/java/com/unit/daybook/domain/auth/controller/.gitkeep

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‎src/main/java/com/unit/daybook/domain/auth/controller/AuthController.java

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package com.unit.daybook.domain.auth.controller;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import com.unit.daybook.domain.auth.dto.response.SocialLoginResponse;
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import com.unit.daybook.domain.auth.kakao.KakaoLoginParams;
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import com.unit.daybook.domain.auth.service.AuthService;
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import com.unit.daybook.global.util.CookieUtil;
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import lombok.RequiredArgsConstructor;
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@RestController
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@RequestMapping("/auth")
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@RequiredArgsConstructor
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public class AuthController {
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private final AuthService authService;
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private final CookieUtil cookieUtil;
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@PostMapping("/kakao")
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public ResponseEntity<SocialLoginResponse> memberSocialLogin(
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@RequestBody KakaoLoginParams params
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) {
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SocialLoginResponse response = authService.socialLoginMember(params);
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String accessToken = response.accessToken();
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String refreshToken = response.refreshToken();
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HttpHeaders tokenHeaders = cookieUtil.generateTokenCookies(accessToken, refreshToken);
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return ResponseEntity.ok().headers(tokenHeaders).body(response);
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}
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}

‎src/main/java/com/unit/daybook/domain/auth/dto/request/KakaoCodeRequest.java

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package com.unit.daybook.domain.auth.dto.request;
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public record KakaoCodeRequest (String code) {
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}

‎src/main/java/com/unit/daybook/domain/auth/dto/request/OauthProvider.java

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package com.unit.daybook.domain.auth.dto.request;
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import lombok.AllArgsConstructor;
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import lombok.Getter;
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@Getter
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@AllArgsConstructor
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public enum OauthProvider {
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KAKAO("KAKAO"),
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;
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private final String value;
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}

‎src/main/java/com/unit/daybook/domain/auth/dto/response/AuthTokenResponse.java

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package com.unit.daybook.domain.auth.dto.response;
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public record AuthTokenResponse(
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String accessToken,
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String refreshToken,
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String grantType,
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Long expiresIn
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) {
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public static AuthTokenResponse of(String accessToken, String refreshToken, String grantType, Long expiresIn) {
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return new AuthTokenResponse(accessToken, refreshToken, grantType, expiresIn);
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}
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}

‎src/main/java/com/unit/daybook/domain/auth/dto/response/SocialLoginResponse.java

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package com.unit.daybook.domain.auth.dto.response;
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import com.unit.daybook.domain.member.domain.Member;
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public record SocialLoginResponse(
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Long memberId,
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String accessToken,
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String refreshToken) {
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public static SocialLoginResponse of(
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Member member, TokenPairResponse tokenPairResponse) {
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return new SocialLoginResponse(
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member.getId(),
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tokenPairResponse.accessToken(),
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tokenPairResponse.refreshToken());
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}
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}

‎src/main/java/com/unit/daybook/domain/auth/dto/response/TokenPairResponse.java

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package com.unit.daybook.domain.auth.dto.response;
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public record TokenPairResponse(
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String accessToken,
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String refreshToken
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) {
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public static TokenPairResponse from(String accessToken, String refreshToken) {
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return new TokenPairResponse(accessToken, refreshToken);
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}
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}

‎src/main/java/com/unit/daybook/domain/auth/kakao/KakaoApiClient.java

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package com.unit.daybook.domain.auth.kakao;
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import lombok.RequiredArgsConstructor;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.http.HttpEntity;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.MediaType;
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import org.springframework.stereotype.Component;
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import org.springframework.util.LinkedMultiValueMap;
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import org.springframework.util.MultiValueMap;
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import com.unit.daybook.domain.auth.common.OAuthApiClient;
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import com.unit.daybook.domain.auth.common.OAuthInfoResponse;
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import com.unit.daybook.domain.auth.common.OAuthLoginParams;
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import com.unit.daybook.domain.auth.dto.request.OauthProvider;
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import com.unit.daybook.global.error.exception.CustomException;
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import com.unit.daybook.global.error.exception.ErrorCode;
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import org.springframework.web.client.RestTemplate;
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@Component
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@RequiredArgsConstructor
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public class KakaoApiClient implements OAuthApiClient {
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private static final String GRANT_TYPE = "authorization_code";
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@Value("${oauth.kakao.url.auth}")
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private String authUrl;
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@Value("${oauth.kakao.url.api}")
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private String apiUrl;
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@Value("${oauth.kakao.client-id}")
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private String clientId;
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@Value("${oauth.kakao.client-secret")
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private String clientSecret;
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private final RestTemplate restTemplate;
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@Override
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public OauthProvider oAuthProvider() {
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return OauthProvider.KAKAO;
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}
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@Override
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public String requestAccessToken(OAuthLoginParams params) {
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String url = authUrl + "/oauth/token";
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HttpHeaders httpHeaders = new HttpHeaders();
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httpHeaders.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
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MultiValueMap<String, String> body = params.makeBody();
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body.add("grant_type", GRANT_TYPE);
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body.add("client_id", clientId);
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body.add("client_secret", clientSecret);
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HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(body, httpHeaders);
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KakaoTokens response = restTemplate.exchange(url, HttpMethod.POST, request, KakaoTokens.class).getBody();
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if (response == null) {
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throw new CustomException(ErrorCode.KAKAO_RESPONSE_NOT_FOUND);
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}
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return response.getAccessToken();
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}
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@Override
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public OAuthInfoResponse requestOAuthInfo(String accessToken) {
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String url = apiUrl + "/v2/user/me";
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HttpHeaders httpHeaders = new HttpHeaders();
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httpHeaders.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
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httpHeaders.set("Authorization", "Bearer " + accessToken);
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MultiValueMap<String, String> body = new LinkedMultiValueMap<>();
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body.add("property_keys", "[\"id\", \"kakao_account.\", \"properties.\", \"has_signed_up.\"]");
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HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(body, httpHeaders);
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return restTemplate.exchange(url, HttpMethod.POST, request, KakaoInfoResponse.class).getBody();
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}
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}

‎src/main/java/com/unit/daybook/domain/auth/kakao/KakaoInfoResponse.java

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package com.unit.daybook.domain.auth.kakao;
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import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
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import com.fasterxml.jackson.annotation.JsonProperty;
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import com.unit.daybook.domain.auth.common.OAuthInfoResponse;
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import com.unit.daybook.domain.auth.dto.request.OauthProvider;
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import lombok.Getter;
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@Getter
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@JsonIgnoreProperties(ignoreUnknown = true)
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public class KakaoInfoResponse implements OAuthInfoResponse {
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// https://kapi.kakao.com/v2/user/me 요청 결과 값
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@JsonProperty("kakao_account")
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private KakaoAccount kakaoAccount;
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@JsonIgnoreProperties(ignoreUnknown = true)
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private String id;
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@Getter
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@JsonIgnoreProperties(ignoreUnknown = true)
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static class KakaoAccount {
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private KakaoProfile profile;
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private String id;
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private String email;
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private String gender;
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private String birthday;
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private String age_range;
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}
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@Getter
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@JsonIgnoreProperties(ignoreUnknown = true)
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static class KakaoProfile {
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private String id;
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private String nickname;
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private String profile_image;
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}
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@Override
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public String getSnsId() {
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return id;
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}
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@Override
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public String getEmail() {
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return kakaoAccount.email;
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}
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@Override
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public String getNickname() {
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return kakaoAccount.profile.nickname;
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}
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@Override
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public OauthProvider getOAuthProvider() {
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return OauthProvider.KAKAO;
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}
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@Override
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public String getProfileImageUrl() {
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return kakaoAccount.profile.profile_image;
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}
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@Override
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public String getGender() {
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return kakaoAccount.gender;
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}
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@Override
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public String getBirthday() {
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if (kakaoAccount.birthday != null) {
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String month = kakaoAccount.birthday.substring(0, 2);
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String day = kakaoAccount.birthday.substring(2);
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return month + "-" + day;
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} else {
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return null;
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}
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}
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@Override
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public String getAgeRange() {
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return kakaoAccount.age_range;
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}
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}

‎src/main/java/com/unit/daybook/domain/auth/kakao/KakaoLoginParams.java

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package com.unit.daybook.domain.auth.kakao;
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import org.springframework.util.LinkedMultiValueMap;
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import org.springframework.util.MultiValueMap;
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import com.unit.daybook.domain.auth.common.OAuthLoginParams;
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import com.unit.daybook.domain.auth.dto.request.OauthProvider;
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import lombok.Getter;
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import lombok.NoArgsConstructor;
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@Getter
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@NoArgsConstructor
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public class KakaoLoginParams implements OAuthLoginParams {
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private String code;
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@Override
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public OauthProvider oAuthProvider() {
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return OauthProvider.KAKAO;
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}
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// Kakao Server에서 response받은 code 값 chaining
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@Override
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public MultiValueMap<String, String> makeBody() {
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MultiValueMap<String, String> body = new LinkedMultiValueMap<>();
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body.add("code", code);
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return body;
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}
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}

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