Fix :: return value in userService

src/main/java/com/keepgoing/keepserver/domain/student/service/StudentServiceImpl.java

@@ -181,7 +181,7 @@ public BaseResponse editStudent(StudentRequestDto studentDto, Long id) {
 
     public StudentResponseDto studentFormat(Student student) {
         String studentId = student.getStudentId();
-        User user = userRepository.findByEmail(student.getMail()).orElse(null);
+        User user = userService.getUserByEmail(student.getMail()).get();
 
         return StudentResponseDto.builder()
                 .id(student.getId())
@@ -194,4 +194,8 @@ public StudentResponseDto studentFormat(Student student) {
                 .statusTime(user.getStatusTime() != null ? user.getStatusTime().format(formatter()) : null)
                 .build();
     }
+
+    private DateTimeFormatter formatter(){
+        return DateTimeFormatter.ofPattern("yyyy-MM-dd-HH-mm-ss");
+    }
 }

src/main/java/com/keepgoing/keepserver/domain/user/domain/repository/user/UserQueryRepositoryImpl.java

@@ -58,6 +58,7 @@ public UserDto getProfileById(long id) {
                                                 book.bookName,
                                                 book.writer,
                                                 book.imageUrl,
+                                                book.nfcCode,
                                                 book.registrationDate,
                                                 book.rentDate,
                                                 book.state

src/main/java/com/keepgoing/keepserver/domain/user/service/user/UserService.java

@@ -12,6 +12,8 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.Authentication;
 
+import java.util.Optional;
+
 public interface UserService {
     ApiResponse<JwtResponse> registerUser(SignupRequest signupRequest) throws BusinessException;
 
@@ -26,4 +28,6 @@ public interface UserService {
     User getTeacher(Authentication authentication);
 
     ResponseEntity<String> updateUserStatus(StatusRequest statusRequest, Authentication authentication);
+
+    Optional<User> getUserByEmail(String email);
 }

src/main/java/com/keepgoing/keepserver/domain/user/service/user/UserServiceImpl.java

@@ -26,6 +26,8 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.Optional;
+
 @Service
 @RequiredArgsConstructor
 public class UserServiceImpl implements UserService {
@@ -67,6 +69,7 @@ public UserNoticesDto getNoticeByUser(Authentication authentication) {
     }
 
     @Override
+    @Transactional(readOnly = true)
     public User getTeacher(Authentication authentication) {
         var ud = (UserDetailsImpl) authentication.getPrincipal();
 
@@ -83,6 +86,13 @@ public ResponseEntity<String> updateUserStatus(StatusRequest statusRequest, Auth
         return ResponseEntity.ok().body("상태 수정 성공");
     }
 
+    @Override
+    @Transactional(readOnly = true)
+    public Optional<User> getUserByEmail(String email){
+        return Optional.ofNullable(userRepository.findByEmail(email)
+                                                 .orElseThrow(() -> new UserException(UserError.USER_NOT_FOUND)));
+    }
+
     /* 인증 및 JWT 토큰 생성 */
     public JwtResponse authenticateAndGenerateJWT(String email, String password) {
         Authentication authentication = authenticationManager.authenticate(

src/main/java/com/keepgoing/keepserver/global/exception/user/UserError.java

@@ -8,7 +8,9 @@
 @Getter
 @RequiredArgsConstructor
 public enum UserError implements ErrorProperty {
-    USER_NOT_TEACHER(HttpStatus.BAD_REQUEST, "선생님이 아닙니다.");
+    USER_NOT_TEACHER(HttpStatus.BAD_REQUEST, "선생님이 아닙니다."),
+    USER_NOT_FOUND(HttpStatus.BAD_REQUEST, "해당 학생을 찾을 수 없습니다");
+
     private final HttpStatus status;
     private final String message;
 }

src/main/java/com/keepgoing/keepserver/global/exception/user/UserException.java

@@ -5,6 +5,7 @@
 
 public class UserException extends BusinessException {
     private static final UserException USER_NOT_TEACHER = new UserException(UserError.USER_NOT_TEACHER);
+    private static final UserException USER_NOT_FOUND = new UserException(UserError.USER_NOT_FOUND);
 
     public UserException(ErrorProperty error) {
         super(error);
@@ -13,4 +14,5 @@ public UserException(ErrorProperty error) {
     public static UserException userNotTeacher() {
         return USER_NOT_TEACHER;
     }
+    public static UserException userNotFound(){ return USER_NOT_FOUND; }
 }