Spring/My First Blog Project
My First Blog Project (17) : 게시판 글 목록 페이징처리
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2022. 12. 26. 09:57
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BoardController.java
package com.cos.blog.controller;
import com.cos.blog.config.auth.PrincipalDetail;
import com.cos.blog.service.BoardService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
@Controller
public class BoardController {
@Autowired
private BoardService boardService;
@GetMapping({"","/"})
public String index(Model model,@PageableDefault(size = 3,sort = "id",direction = Sort.Direction.DESC) Pageable pageable){
model.addAttribute("boards",boardService.글목록(pageable));
return "index"; //viewResolver 작동
}
//USER권한이 필요
@GetMapping("/board/saveForm")
public String saveForm(){
return "board/saveForm";
}
}
@PageableDefault를 service로 넘긴다.
BoardService.java
package com.cos.blog.service;
import com.cos.blog.model.Board;
import com.cos.blog.model.User;
import com.cos.blog.repository.BoardRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.*;
@Service
public class BoardService {
@Autowired
private BoardRepository boardRepository;
@Transactional
public void 글쓰기(Board board, User user){
board.setCount(0);
board.setUser(user);
boardRepository.save(board);
}
public Page<Board> 글목록(Pageable pageable) {
return boardRepository.findAll(pageable);
}
}
글목록에서 Pageable을 받으면 return타입이 Page로 바뀐다.
index.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ include file="layout/header.jsp" %>
<div class="container">
<c:forEach var="board" items='${boards.content}'>
<div class="card m-2">
<div class="card-body">
<h4 class="card-title">${board.title}</h4>
<a href="#" class="btn btn-primary"></a>
</div>
</div>
</c:forEach>
<ul class="pagination justify-content-center">
<c:choose>
<c:when test='${boards.first}'>
<li class="page-item disabled"><a class="page-link" href="?page=${boards.number -1}">Previous</a></li>
</c:when>
<c:otherwise>
<li class="page-item"><a class="page-link" href="?page=${boards.number -1}">Previous</a></li>
</c:otherwise>
</c:choose>
<c:choose>
<c:when test='${boards.last}'>
<li class="page-item disabled"><a class="page-link" href="?page=${boards.number +1}">Next</a></li>
</c:when>
<c:otherwise>
<li class="page-item"><a class="page-link" href="?page=${boards.number +1}">Next</a></li>
</c:otherwise>
</c:choose>
</ul>
</div>
<%@ include file="layout/footer.jsp" %>
first/lase page정보를 가져와서 첫페이지면 previous 버튼 비활성화/ 마지막페이지면 next 버튼 비활성화
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