검색 기능

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• repository > BoardRepository.java

package com.study.board.repository;

import com.study.board.entity.Board;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface BoardRepository extends JpaRepository<Board, Integer> {
    Page<Board> findByTitleContaining(String searchKeyword, Pageable pageable);
}

• service > BoardService.java

package com.study.board.service;

import com.study.board.entity.Board;
import com.study.board.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.web.multipart.MultipartFile;

import java.io.File;
import java.util.UUID;

@Service
public class BoardService {

    @Autowired
    private BoardRepository boardRepository;

    public Page<Board> boardSearchList(String searchKeyword, Pageable pageable) {
        return boardRepository.findByTitleContaining(searchKeyword, pageable);
    }
}

• controller > BoardController.java

package com.study.board.controller;

import com.study.board.entity.Board;
import com.study.board.service.BoardService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.multipart.MultipartFile;

@Controller
public class BoardController {

    @Autowired
    private BoardService boardService;

    @GetMapping("/board/list")
    public String boardList(Model model, @PageableDefault(page = 0, size = 10, sort = "id", direction = Sort.Direction.DESC) Pageable pageable, String searchKeyword) {

        Page<Board> list = null;
        if (searchKeyword == null) {
            list = boardService.boardList(pageable);
        } else {
            list = boardService.boardSearchList(searchKeyword, pageable);
        }

        // 현재 페이지
        // pageable이 가지고 있는 page는 0에서 시작하기 때문에 우리가 보는 부분보다 1이 적다. 그래서 +1
        int nowPage = list.getPageable().getPageNumber() + 1;

        // 첫 번째 페이지
        int firstPage = 1;

        // 마지막 페이지
        int lastPage = list.getTotalPages();

        model.addAttribute("list", list);
        model.addAttribute("nowPage", nowPage);
        model.addAttribute("firstPage", firstPage);
        model.addAttribute("lastPage", lastPage);
        
        return "boardlist";
    }
}

searchKeyword=11&page=0 : title에 11을 포함한 것들&1페이지

• templates > boardlist.html

	<!-- start페이지부터 end페이지 까지 반복을 할거다    -->
    <th:block th:each="page : ${#numbers.sequence(firstPage,lastPage)}">
        <!-- 만약에 페이지 블록에 보이는 페이지가 현재 페이지와 다르다면 -->
        <a th:href="@{/board/list(page=${page - 1},searchKeyword = ${param.searchKeyword})}" th:if="${page != nowPage}"
           th:text="${page}"></a>
        <!-- 만약에 페이지 블록에 보이는 페이지가 현재 페이지와 다르다면 -->
        <strong style="color: red" th:if="${page == nowPage}" th:text="${page}"></strong>
    </th:block>
    <form method="get" th:action="@{/board/list}">
        <input name="searchKeyword" type="text">
        <button type="submit">검색</button>
    </form>