✨feature: 게시판 검색 기능 구현 (#167) (#168)

src/main/java/com/capstone/BnagFer/domain/board/controller/BoardController.java

@@ -18,6 +18,7 @@
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -167,4 +168,16 @@ public ApiResponse<List<GetMyBoardBlockResponseDto>> getBlockedUsers(@LoginUser
         return ApiResponse.onSuccess(blockedUsers);
     }
 
+    @Operation(summary = "제목으로 게시판 검색", description = "제목으로 게시판을 검색. 페이징 적용, 생성 날짜 기준 내림차순 정렬.")
+    @GetMapping("/search")
+    public ApiResponse<Page<BoardListDto>> searchTitle(
+            @RequestParam(value ="title",required = false) String title,
+            @RequestParam(defaultValue = "0") int page,
+            @RequestParam(defaultValue = "10") int size,
+            @LoginUser User user) {
+        Pageable pageable = PageRequest.of(page, size, Sort.by(Sort.Direction.DESC, "createdAt"));
+        Page<BoardListDto> boardLists = boardQueryService.searchByTitle(title, user, pageable);
+        return ApiResponse.onSuccess(boardLists);
+    }
+
 }

src/main/java/com/capstone/BnagFer/domain/board/repository/BoardRepository.java

@@ -15,4 +15,6 @@ public interface BoardRepository extends JpaRepository<Board, Long> {
 
     Page<Board> findByUserId(Long userId, Pageable pageable);
 
+    Page<Board> findByBoardTitleContaining(String title, Pageable pageable);
+
 }

src/main/java/com/capstone/BnagFer/domain/board/service/BoardQueryService.java

@@ -76,7 +76,7 @@ public BoardDetailResponseDto getBoard(User user, Long boardId) {
         }
 
         Long commentCount = redisUtil.boardGetCommentCount(boardId);
-        if(commentCount == null){
+        if (commentCount == null) {
             commentCount = (long) board.getComments().size();
             redisUtil.boardSaveCommentCount(boardId, commentCount);
         }
@@ -97,9 +97,20 @@ public Page<Board> getBoardsByUserId(Long userId, Pageable pageable) {
         return boardRepository.findByUserId(userId, pageable);
     }
 
+    //자유게시판 검색 기능
+    public Page<BoardListDto> searchByTitle(String title, User user, Pageable pageable) {
+        if (title == null) title = "";
+        Page<Board> byTitleContaining = boardRepository.findByBoardTitleContaining(title, pageable);
+        // 사용자가 차단한 다른 사용자들의 ID 목록을 가져온다
+        List<Long> blockedUserIds = boardBlockRepository.findIsBlockUserIdsByBlockUserId(user.getId());
+        // 차단한 사용자의 게시글이 제외된 리스트 생성
+        List<BoardListDto> filteredBoards = byTitleContaining.getContent().stream()
+                .filter(board -> !blockedUserIds.contains(board.getUser().getId()) || board.getUser().getId().equals(user.getId()))
+                .map(BoardListDto::from)
+                .toList();
+        return new PageImpl<>(filteredBoards, pageable, byTitleContaining.getTotalElements());
+    }
     public boolean isUserBlocked(User blockUser, User isBlockedUser) {
         return boardBlockRepository.existsByBlockUserAndIsBlockedUser(blockUser, isBlockedUser);
     }
-
-
 }