Junit Test Application-10-회원가입 서비스 만들기

Junit Bank Application 깃허브

Junit Bank Application 기록 노션

레포지토리 만들기

import org.springframework.data.jpa.repository.JpaRepository;

public interface AccountRepository extends JpaRepository<Account, Long> {

}

package shop.mtcoding.bank.domain.transaction;

import org.springframework.data.jpa.repository.JpaRepository;

public interface TransactionRepository extends JpaRepository<Transaction, Long> {

}

package shop.mtcoding.bank.domain.user;

import org.springframework.data.jpa.repository.JpaRepository;

public interface UserRepository extends JpaRepository<User, Long> {

}

서비스에서 코드 작성하기

서비스에서는 DTO를 받아서 DTO를 내보내는 것을 고정으로

package shop.mtcoding.bank.service;

import java.util.Optional;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import shop.mtcoding.bank.domain.user.User;
import shop.mtcoding.bank.domain.user.UserEnum;
import shop.mtcoding.bank.domain.user.UserRepository;
import shop.mtcoding.bank.handler.ex.CustomApiException;

@RequiredArgsConstructor
@Service
public class UserService {

     private final Logger log = LoggerFactory.getLogger(getClass());
     private final UserRepository userRepository;
     private final BCryptPasswordEncoder passwordEncoder;

     @Transactional
     public JoinResponseDto 회원가입(JoinRequestDto joinRequestDto) {
          // 1. 동일 유저네임 검사
          Optional<User> userOP = userRepository.findByUsername(joinRequestDto.getUsername());
          if (userOP.isPresent()) {
               throw new CustomApiException("동일한 유저네임이 존재합니다. ");
          }

          // 2. 패스워드 인코딩 + 회원가입
          User userPS = userRepository.save(joinRequestDto.toEntity(passwordEncoder));

          // 3. dto 응답
          return new JoinResponseDto(userPS);
     }

     @Getter
     @Setter
     public static class JoinResponseDto {

          private Long id;
          private String username;
          private String fullname;

          public JoinResponseDto(User user) {
               this.id = user.getId();
               this.username = user.getUsername();
               this.fullname = user.getFullname();
          }
     }

     @Getter
     @Setter
     public static class JoinRequestDto {
          // 유효성 검사
          private String username;
          private String password;
          private String email;
          private String fullname;

          public User toEntity(BCryptPasswordEncoder passwordEncoder) {
               return User.builder()
                         .username(username)
                         .password(passwordEncoder.encode(password))
                         .email(email)
                         .fullname(fullname)
                         .role(UserEnum.CUSTOMER)
                         .build();
          }
     }
}

findByusername에 대한 코드 작성, * 네임드 쿼리 찾아보기

네임드 쿼리

void findByUsername(String username);

public interface UserRepository extends JpaRepository<User, Long> {

     // select * from user where username = ?
     Optional<User> findByUsername(String username);

}

예외처리하는 핸들러 필요해서 만들기

package shop.mtcoding.bank.handler.ex;

public class CustomApiException extends RuntimeException {

     public CustomApiException(String message) {
          super(message);
     }
}

package shop.mtcoding.bank.handler;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import shop.mtcoding.bank.dto.ResponseDto;
import shop.mtcoding.bank.handler.ex.CustomApiException;

@RestControllerAdvice
public class CumstomExceptionHandler {

     private final Logger log = LoggerFactory.getLogger(getClass());

     @ExceptionHandler(CustomApiException.class)
     public ResponseEntity<?> apiException(CustomApiException e) {
          log.error(e.getMessage());
          return new ResponseEntity<>(new ResponseDto<>(-1, e.getMessage(), null), HttpStatus.BAD_REQUEST);
     }
}