[Spring Boot][FastCampus][Final Project] 스프링 부트를 이용한 게시판 프로그램 ③ - 컨트롤러 클래스 설계와 구현

과제 상세 7

컨트롤러 클래스는 게시판 관련 컨트롤러 하나로 모든 요청을 처리하도록 작성합니다.

src/main/java/com/fastcampus/board/BoardController.java

package com.fastcampus.board;

import java.util.List;

import javax.validation.Valid;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.fastcampus.board.dto.BoardDto;
import com.fastcampus.board.service.BoardService;

@Controller
public class BoardController {
	private BoardService boardService;

    public BoardController(BoardService boardService) {
        this.boardService = boardService;
    }

    @RequestMapping(value="/save",method = RequestMethod.POST)
    public String createPost(@Valid @ModelAttribute("command") BoardDto postDto){
        System.out.println("save " + postDto);
    	boardService.savePost(postDto);
        return "redirect:/"; // 추가 후 홈 화면으로
    }

    @RequestMapping("/")
    public String ReadAllPost(Model model){
        List<BoardDto> postList = boardService.getBoardList();
        model.addAttribute("postList", postList);
        return "index";
    }

    @RequestMapping(value="/update",method = RequestMethod.POST)
    public String updatePost(@Valid @ModelAttribute("command") BoardDto postDto){
        System.out.println("update " + postDto);
        boardService.updatePost(postDto);
        return "redirect:/";
    }

    @RequestMapping(value="/delete/{id}",method = RequestMethod.GET)
    public String deletePost(@PathVariable Long id){
        System.out.println("삭제 " + id);
        boardService.deletePost(id);
        return "redirect:/";
    }

    @RequestMapping(value="/createView")
    public String ViewCreate(Model model){
        model.addAttribute("command", new BoardDto());
        return "create";
    }

    @RequestMapping(value="/updateView/{id}")
    public String ViewUpdate(@PathVariable Long id, Model model){
    	
    	BoardDto boardDto = boardService.getPost(id); // 게시물 조회(수정전 기존 값 불러오기)
    	
        BoardDto postDto = new BoardDto();
        postDto.setSeq(id);
        postDto.setWriter(boardDto.getWriter());
        postDto.setContent(boardDto.getContent());
        postDto.setTitle(boardDto.getTitle());
        postDto.setCnt(boardDto.getCnt());
        model.addAttribute("command",postDto);
        return "update";
    }
}

 

과제 상세 8

비즈니스 컴포넌트는 인터페이스를 제공하지 않도록 설계했기 때문에 컨트롤러 클래스가 비즈니스 컴포넌트를 사용할 때 비즈니스 클래스를 직접 사용하도록 구현합니다.

src/main/java/com/fastcampus/board/service/BoardService.java

package com.fastcampus.board.service;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.fastcampus.board.dto.BoardDto;
import com.fastcampus.board.model.entity.Board;
import com.fastcampus.board.repository.BoardRepository;

@Service
public class BoardService {
	private BoardRepository boardRepository;

    public BoardService(BoardRepository boardRepository) {
        this.boardRepository = boardRepository;
    }

    // 게시물 생성
    @Transactional
    public Long savePost(BoardDto boardDto) {
        return boardRepository.save(boardDto.toEntity(0L)).getSeq();
    }
    
    // 게시물 수정
    @Transactional
    public Long updatePost(BoardDto boardDto) {
    	Board board = boardRepository.findById(boardDto.getSeq()).get();
    	System.out.println("board : "+board);
    	return boardRepository.save(boardDto.toEntity(board.getCnt())).getSeq();
    }
    
    // 게시물 전체 가져오기
    @Transactional
    public List<BoardDto> getBoardList() {
        Iterable<Board> boardList = boardRepository.findAll();
        List<BoardDto> boardDtoList = new ArrayList<>();

        for(Board board : boardList) {
            BoardDto boardDto = BoardDto.builder()
                    .seq(board.getSeq())
                    .writer(board.getWriter())
                    .title(board.getTitle())
                    .content(board.getContent())
                    .regDate(board.getRegDate())
                    .cnt(board.getCnt())
                    .build();
            boardDtoList.add(boardDto);
        }
        return boardDtoList;
    }
    
    // 게시물 삭제
    @Transactional
    public void deletePost(Long id) {
        boardRepository.deleteById(id);
    }
    
    // 게시물 상세 조회
    @Transactional
    public BoardDto getPost(Long id) {
        Board board = boardRepository.findById(id).get();
        
        // 조회수 +1
        if(board.getCnt() == null) {
        	board.setCnt(1L);
        } else {
        	board.setCnt(board.getCnt()+1);
        }
        
        BoardDto boardDto = BoardDto.builder()
                .seq(board.getSeq())
                .writer(board.getWriter())
                .title(board.getTitle())
                .content(board.getContent())
                .regDate(board.getRegDate())
                .build();
        return boardDto;
    }
}