[spring] RestController

@RestController

• @RestController 어노테이션은 각 메소드에 @ResponseBody 어노테이션을 추가 할 필요 없이, @Controller와 @ResponseBody의 조합으로 기능한다.
• Spring version 4부터 새로운 @RestController 어노테이션을 사용할 수 있다.

댓글구현 예제(프로젝트파일 참조)

• 페이지 부분은 코드가 길어져 뺏습니다.

• controller.java 컨트롤러 부분 코드

  @RestController
  @RequestMapping("/replies")
  public class ReplyController {
  
    @Inject
    private ReplyService replyService;
  
    @RequestMapping(value = "", method = RequestMethod.POST)
    public ResponseEntity<String> register(@RequestBody ReplyVO vo) { //댓글추가
        ResponseEntity<String> entity = null; // ResponseEntity : 데이터 + http status code
        try {
            replyService.addReply(vo);
            entity = new ResponseEntity<String>("SUCCESS", HttpStatus.OK);
        } catch (Exception e) {
            e.printStackTrace();
            entity = new ResponseEntity<String>(e.getMessage(), HttpStatus.BAD_REQUEST);
        }
        return entity;
    }
  
  @RequestMapping(value = "/all/{studyNo}", method = RequestMethod.GET)
    public ResponseEntity<List<ReplyVO>> list(@PathVariable("studyNo") Integer studyNo) { // 댓글목록
        ResponseEntity<List<ReplyVO>> entity = null;
  
        try {
            entity = new ResponseEntity<>(replyService.listReply(studyNo), HttpStatus.OK);
        } catch (Exception e) {
            e.printStackTrace();
            entity = new ResponseEntity<>(HttpStatus.BAD_REQUEST);
        }
        return entity;
    }
  
    @RequestMapping(value = "/{replyNo}", method = { RequestMethod.PUT, RequestMethod.PATCH })
    public ResponseEntity<String> update(@PathVariable("replyNo") Integer replyNo, @RequestBody ReplyVO vo) { // 댓글수정
        ResponseEntity<String> entity = null;
        try {
            vo.setReplyNo(replyNo);
            replyService.modifyReply(vo);
  
            entity = new ResponseEntity<String>("SUCCESS", HttpStatus.OK);
        } catch (Exception e) {
            e.printStackTrace();
            entity = new ResponseEntity<String>(e.getMessage(), HttpStatus.BAD_REQUEST);
        }
        return entity;
    }
  
    @RequestMapping(value = "/{replyNo}", method = RequestMethod.DELETE)
    public ResponseEntity<String> remove(@PathVariable("replyNo") Integer replyNo, @RequestBody ReplyVO vo) { // 댓글삭제
        ResponseEntity<String> entity = null;
        try {
            replyService.removeReply(replyNo, vo.getStudyNo());
            entity = new ResponseEntity<String>("SUCCESS", HttpStatus.OK);
        } catch (Exception e) {
            e.printStackTrace();
            entity = new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
        }
        return entity;
    }
  }
  

• service.java 서비스 부분 코드

  @Service
  public class ReplyServiceImpl implements ReplyService {
  
    @Inject
    private ReplyDAO replyDAO;
  
    @Inject
    private StudyDAO studyDAO;
  
  @Transactional // 트랜잭션처리
    @Override
    public void addReply(ReplyVO vo) throws Exception { // 댓글추가
        replyDAO.create(vo); // 댓글생성
        studyDAO.updateReplyCnt(vo.getStudyNo(), 1); //게시글 댓글수 up
    }
  
    @Override
    public List<ReplyVO> listReply(Integer studyNo) throws Exception { // 댓글목록
        return replyDAO.list(studyNo); // 댓글리스트
    }
  
    @Override
    public void modifyReply(ReplyVO vo) throws Exception { // 댓글수정
        replyDAO.update(vo); // 댓글업데이트
    }
  
    @Transactional
    @Override
    public void removeReply(Integer replyNo,Integer studyNo) throws Exception { // 댓글삭제
        replyDAO.delete(replyNo); // 댓글삭제
        studyDAO.updateReplyCnt(studyNo, -1); // 게시글 댓글수 down
    }
  }
  

• dao.java DAO 부분 코드

  @Repository
  public class ReplyDAOImpl implements ReplyDAO {
  
    @Inject
    private SqlSession session;
  
    private static String namespace = "org.sbang.mapper.ReplyMapper";
  
    @Override
    public List<ReplyVO> list(Integer studyNo) throws Exception { // 댓글목록
        return session.selectList(namespace + ".list", studyNo);
    }
  
    @Override
    public void create(ReplyVO vo) throws Exception { // 댓글생성
        session.insert(namespace + ".create", vo);
    }
  
    @Override
    public void update(ReplyVO vo) throws Exception { // 댓글수정
        session.update(namespace + ".update", vo);
    }
  
    @Override
    public void delete(Integer replyNo) throws Exception { // 댓글삭제
        session.delete(namespace + ".delete", replyNo);
    }
  }
  

• mapper.xml 코드

<mapper namespace="org.sbang.mapper.ReplyMapper">
	<select id="list" resultType="ReplyVO"> <!-- 댓글목록 -->
		select * from reply where studyNo = #{studyNo} order by replyNo desc
	</select>

	<insert id="create"> <!-- 댓글생성 -->
		insert into reply (studyNo, replyText, userNo) values (#{studyNo}, #{replyText}, #{userNo})
	</insert>

	<update id="update"> <!-- 댓글수정 -->
		update reply set replyText = #{replyText}, replyUpdateDate = now() where replyNo = #{replyNo}
	</update>

	<delete id="delete"> <!-- 댓글삭제 -->
		delete from reply where replyNo = #{replyNo}
	</delete>
</mapper>

• reply.jsp // html은빼고 javascript부분 생성부분만 작성

/* 댓글 추가 */
$("#replyAddBtn").on("click", function() {
	var replytextObj = $("#newReplyText");  // 댓글내용
	var replyer = $('#userNo').val(); // 댓글 글쓴이 번호
	var replyText = replytextObj.val(); // 댓글내용

	if (replyText != "") {
		$.ajax({
			type : 'post',
			url : '/replies/',
			headers : {
				"Content-Type" : "application/json",
				"X-HTTP-Method-Override" : "POST"
			},
			dataType : 'text',
			data : JSON.stringify({
				studyNo : studyNo,
				userNo : replyer,
				replyText : replyText
			}),
			success : function(result) {
				if (result == 'SUCCESS') {
					replyPage = 1;
					getPage("/replies/" + studyNo + "/" + replyPage); // 댓글 리프레쉬 함수
					replytextObj.val(""); // 댓글내용 초기화
				}
			}
		});
	} else {
		alert("댓글을 입력해주세요");
		return;
	}
});
// 이하 수정, 삭제 생략

2018-02-17 16:54