Merge pull request #20 from 9oormthon-univ/feature/#18

[FEAT] 회원 정보 조회 API 구현

src/main/java/danpoong/soenter/domain/user/controller/UserController.java

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+package danpoong.soenter.domain.user.controller;
+
+import danpoong.soenter.base.ApiResponse;
+import danpoong.soenter.domain.user.dto.UserDTO.UserResponse.GetUserDetailResponse;
+import danpoong.soenter.domain.user.service.UserService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/users")
+@RequiredArgsConstructor
+@Tag(name = "User Controller", description = "유저 관련 API")
+public class UserController {
+
+    private final UserService userService;
+    @GetMapping
+    @Operation(summary = "회원 프로필 조회 API", description = "사용자의 프로필 정보를 조회합니다.")
+    @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "COMMON200", description = "OK, 성공")
+    @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "COMMON400", description = "잘못된 요청입니다.")
+    public ApiResponse<GetUserDetailResponse> getUserDetail(Authentication authentication) {
+        GetUserDetailResponse userDetail = userService.getUserDetail(authentication.getName());
+        return ApiResponse.onSuccess(userDetail);
+    }
+}

src/main/java/danpoong/soenter/domain/user/converter/UserConverter.java

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+package danpoong.soenter.domain.user.converter;
+
+import danpoong.soenter.domain.user.dto.UserDTO.UserResponse.GetUserDetailResponse;
+import danpoong.soenter.domain.user.entity.User;
+
+public class UserConverter {
+    public static GetUserDetailResponse toGetUserDetailResponse(User user) {
+        return GetUserDetailResponse.builder()
+                .name(user.getName())
+                .email(user.getEmail())
+                .build();
+    }
+}

src/main/java/danpoong/soenter/domain/user/dto/UserDTO.java

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+package danpoong.soenter.domain.user.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+
+public class UserDTO {
+    public static class UserResponse {
+        @Getter
+        @Builder
+        public static class GetUserDetailResponse {
+            private String name;
+            private String email;
+        }
+    }
+}

src/main/java/danpoong/soenter/domain/user/service/UserService.java

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+package danpoong.soenter.domain.user.service;
+
+import danpoong.soenter.domain.user.dto.UserDTO.UserResponse.GetUserDetailResponse;
+
+public interface UserService {
+    GetUserDetailResponse getUserDetail(String userId);
+}

src/main/java/danpoong/soenter/domain/user/service/UserServiceImpl.java

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+package danpoong.soenter.domain.user.service;
+
+import danpoong.soenter.domain.user.converter.UserConverter;
+import danpoong.soenter.domain.user.dto.UserDTO.UserResponse.GetUserDetailResponse;
+import danpoong.soenter.domain.user.entity.User;
+import danpoong.soenter.domain.user.repository.UserRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class UserServiceImpl implements UserService {
+    private final UserRepository userRepository;
+
+    @Transactional(readOnly = true)
+    public GetUserDetailResponse getUserDetail(String userId) {
+        User user = userRepository.findById(Long.valueOf(userId))
+                .orElseThrow(() -> new RuntimeException("존재하지 않는 사용자입니다."));
+
+        return UserConverter.toGetUserDetailResponse(user);
+    }
+}