feat: accessToken 재발급 구현

src/main/java/in/koreatech/koin/domain/user/controller/UserController.java

@@ -3,6 +3,8 @@
 import in.koreatech.koin.domain.auth.UserAuth;
 import in.koreatech.koin.domain.user.dto.UserLoginRequest;
 import in.koreatech.koin.domain.user.dto.UserLoginResponse;
+import in.koreatech.koin.domain.user.dto.UserTokenRefreshRequest;
+import in.koreatech.koin.domain.user.dto.UserTokenRefreshResponse;
 import in.koreatech.koin.domain.user.model.User;
 import in.koreatech.koin.domain.user.service.UserService;
 import jakarta.validation.Valid;
@@ -31,4 +33,13 @@ public ResponseEntity<Void> logout(@UserAuth User user) {
         userService.logout(user);
         return ResponseEntity.ok().build();
     }
+
+    @PostMapping("/user/refresh")
+    public ResponseEntity<UserTokenRefreshResponse> refresh(
+        @UserAuth User user,
+        @RequestBody @Valid UserTokenRefreshRequest request
+    ) {
+        UserTokenRefreshResponse tokenGroupResponse = userService.refresh(user, request);
+        return ResponseEntity.ok().body(tokenGroupResponse);
+    }
 }

src/main/java/in/koreatech/koin/domain/user/dto/UserTokenRefreshRequest.java

@@ -0,0 +1,12 @@
+package in.koreatech.koin.domain.user.dto;
+
+import com.fasterxml.jackson.databind.PropertyNamingStrategies.SnakeCaseStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import jakarta.validation.constraints.NotNull;
+
+@JsonNaming(value = SnakeCaseStrategy.class)
+public record UserTokenRefreshRequest(
+    @NotNull(message = "refresh_token을 입력해주세요.") String refreshToken
+) {
+
+}

src/main/java/in/koreatech/koin/domain/user/dto/UserTokenRefreshResponse.java

@@ -0,0 +1,13 @@
+package in.koreatech.koin.domain.user.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public record UserTokenRefreshResponse(
+    @JsonProperty("token") String accessToken,
+    @JsonProperty("refresh_token") String refreshToken
+) {
+
+    public static UserTokenRefreshResponse of(String accessToken, String refreshToken) {
+        return new UserTokenRefreshResponse(accessToken, refreshToken);
+    }
+}

src/main/java/in/koreatech/koin/domain/user/service/UserService.java

@@ -3,12 +3,15 @@
 import in.koreatech.koin.domain.auth.JwtProvider;
 import in.koreatech.koin.domain.user.dto.UserLoginRequest;
 import in.koreatech.koin.domain.user.dto.UserLoginResponse;
+import in.koreatech.koin.domain.user.dto.UserTokenRefreshRequest;
+import in.koreatech.koin.domain.user.dto.UserTokenRefreshResponse;
 import in.koreatech.koin.domain.user.exception.UserNotFoundException;
 import in.koreatech.koin.domain.user.model.User;
 import in.koreatech.koin.domain.user.model.UserToken;
 import in.koreatech.koin.domain.user.repository.UserRepository;
 import in.koreatech.koin.domain.user.repository.UserTokenRepository;
 import java.time.LocalDateTime;
+import java.util.Objects;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -45,4 +48,14 @@ public UserLoginResponse login(UserLoginRequest request) {
     public void logout(User user) {
         userTokenRepository.deleteById(user.getId());
     }
+
+    public UserTokenRefreshResponse refresh(User user, UserTokenRefreshRequest request) {
+        UserToken userToken = userTokenRepository.findById(user.getId())
+            .orElseThrow(() -> new IllegalArgumentException("refresh token이 존재하지 않습니다. request: " + request));
+        if (Objects.equals(userToken.getRefreshToken(), request.refreshToken())) {
+            throw new IllegalArgumentException("refresh token이 일치하지 않습니다. request: " + request);
+        }
+        String accessToken = jwtProvider.createToken(user);
+        return UserTokenRefreshResponse.of(accessToken, userToken.getRefreshToken());
+    }
 }

src/test/java/in/koreatech/koin/acceptance/AuthApiTest.java

@@ -126,4 +126,55 @@ void userLogoutSuccess() {
 
         Assertions.assertThat(token).isEmpty();
     }
+
+    @Test
+    @DisplayName("사용자가 로그인 이후 refreshToken을 재발급한다")
+    void userRefreshToken() {
+        User user = User.builder()
+            .password("1234")
+            .nickname("주노")
+            .name("최준호")
+            .phoneNumber("010-1234-5678")
+            .userType(UserType.USER)
+            .email("[email protected]")
+            .isAuthed(true)
+            .isDeleted(false)
+            .build();
+
+        userRepository.save(user);
+
+        ExtractableResponse<Response> response = RestAssured
+            .given()
+            .log().all()
+            .body("""
+                {
+                  "email": "[email protected]",
+                  "password": "1234"
+                }
+                """)
+            .contentType(ContentType.JSON)
+            .when()
+            .log().all()
+            .post("/user/login")
+            .then()
+            .log().all()
+            .statusCode(HttpStatus.CREATED.value())
+            .extract();
+
+        RestAssured
+            .given()
+            .log().all()
+            .header("Authorization", "BEARER " + response.jsonPath().getString("token"))
+            .when()
+            .log().all()
+            .post("/user/logout")
+            .then()
+            .log().all()
+            .statusCode(HttpStatus.OK.value())
+            .extract();
+
+        Optional<UserToken> token = tokenRepository.findById(user.getId());
+
+        Assertions.assertThat(token).isEmpty();
+    }
 }