[v3] SpringBoot 블로그 만들기 -1

1. 프로젝트 환경 설정

1. application 에는

spring.profiles.active=dev

1. application-dev 는 개발용

# 1. UTF-8
server.servlet.encoding.charset=UTF-8
server.servlet.encoding.force=true
# 2. H2
spring.datasource.driver-class-name=org.h2.Driver
spring.datasource.url=jdbc:h2:mem:test
spring.datasource.username=sa
# 3. Hibernate
spring.jpa.hibernate.ddl-auto=create
spring.jpa.show-sql=true
spring.jpa.defer-datasource-initialization=true
# 4. Dummy
spring.sql.init.data-locations=classpath:db/data.sql
# 5. Mustache Setting
spring.mustache.servlet.expose-request-attributes=true
spring.mustache.servlet.expose-session-attributes=true
# 6. Query Format
spring.jpa.properties.hibernate.format_sql=true
# 7. OpenInView
spring.jpa.open-in-view=false

1. application-prod 는 배포용임

# 1. UTF-8
server.servlet.encoding.charset=UTF-8
server.servlet.encoding.force=true
# 2. H2
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/blogdb
spring.datasource.username=sa
spring.datasource.password=root1234
# 3. Hibernate
spring.jpa.hibernate.ddl-auto=none
# 4. Mustache Setting
spring.mustache.servlet.expose-request-attributes=true
spring.mustache.servlet.expose-session-attributes=true
# 5. OpenInView
spring.jpa.open-in-view=false

2. 엔티티 및 Repository 설정

public interface UserRepository extends JpaRepository<User, Integer> {
}

얘는 인터페이스 (new 할 수 업다)

public interface UserRepository extends JpaRepository<User, Integer> {

    @Query("select u from  User u where u.username=:usrname")
    User findByUsername(@Param("username") String username);
}

3. 서비스 생성

@RequiredArgsConstructor
@Service
public class UserService {
    private final UserRepository userRepository;
    private final UserQueryRepository userQueryRepository;
}

Spring Boot에서 게시글 수정 기능 구현 및 테스트 과정

    @PostMapping("/api/board/{id}/update")
    public String update(@PathVariable("id") int id, @Valid BoardRequest.UpdateDTO updateDTO, Errors errors) {
        User sessionUser = (User) session.getAttribute("sessionUser");

        boardService.게시글수정(id, updateDTO, sessionUser);

        return "redirect:/board/" + id;
    }

        User sessionUser = User.builder()
                .id(1)
                .username("ssar")
                .password("1234")
                .email("ssar@nate.com")
                .build();

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession();
        User sessionUser = (User) session.getAttribute("sessionUser");

        if (sessionUser == null) { 
            throw new Exception401("인증되지 않았어요");
        }

        return true;//false 면 컨트롤러 진입안됨
    }
}

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession();
       // User sessionUser = (User) session.getAttribute("sessionUser");

        // 1. 아직 로그인이 구현되지 않아서, 강제 세션 만듬
        User sessionUser = User.builder()
                .id(1)
                .username("ssar")
                .password("1234")
                .email("ssar@nate.com")
                .build();
        session.setAttribute("sessionUser", sessionUser);

        if (sessionUser == null) {
            throw new Exception401("인증되지 않았어요");
        }

        return true; // false면 컨트롤러 진입안됨
    }
}

//서비스
public Board 게시글수정화면(int id, User sessionUser) {
    Board board = boardRepository.findById(id);

    if (board.getUser().getId() != sessionUser.getId()) {
        throw new Exception403("게시글 수정 권한이 없습니다.");
    }
    return board;
}

 //컨트롤러
  @GetMapping("/api/board/{id}/update-form")
  public String updateForm(@PathVariable("id") int id, HttpServletRequest request) {
      User sessionUser = (User) session.getAttribute("sessionUser");

      Board board = boardService.게시글수정화면(id, sessionUser);
      request.setAttribute("model", board);
      return "board/update-form";
  }