[Community] 검색 기능 추가

src/main/java/com/back/web7_9_codecrete_be/domain/community/comment/service/CommentService.java

@@ -47,7 +47,7 @@ public CommentPageResponse<CommentResponse> getComments(Long postId, int page) {
 
         Pageable pageable = PageRequest.of(
                 page - 1,
-                20,
+                10,
                 Sort.by(Sort.Direction.ASC, "createdDate")
         );
 

src/main/java/com/back/web7_9_codecrete_be/domain/community/post/controller/JoinPostController.java

@@ -8,11 +8,16 @@
 import com.back.web7_9_codecrete_be.global.rq.Rq;
 import com.back.web7_9_codecrete_be.global.rsData.RsData;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Pageable;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 @RestController
 @RequestMapping("/api/v1/join")
 @RequiredArgsConstructor
@@ -73,4 +78,23 @@ public RsData<?> close(
         joinPostService.close(postId, user.getId());
         return RsData.success("구인글이 마감되었습니다.");
     }
+
+    @Operation(summary = "구인글 검색", description = "제목 또는 내용에 키워드를 포함하고 있는 구인글을 검색합니다.")
+    @GetMapping("/search")
+    public RsData<List<JoinPostResponse>> search(
+            @Schema(description = """
+                <h3>검색어가 되는 Keyword입니다.</h3>
+                <hr/>
+                <b>?keyword={keyword}</b> 로 값을 넘기시면 됩니다.<br/>
+                제목 또는 내용에 해당 문자열을 포함하는 구인글을
+                페이징된 만큼 반환합니다.
+                """)
+            @RequestParam String keyword,
+            @Schema(description = "페이징 처리 또는 무한 스크롤 구현에 사용하는 Pageable 객체입니다.")
+            @Parameter(hidden = true) Pageable pageable
+    ) {
+        return RsData.success(
+                joinPostService.searchByKeyword(keyword, pageable)
+        );
+    }
 }

src/main/java/com/back/web7_9_codecrete_be/domain/community/post/controller/ReviewPostController.java

@@ -9,12 +9,17 @@
 import com.back.web7_9_codecrete_be.global.rq.Rq;
 import com.back.web7_9_codecrete_be.global.rsData.RsData;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 @RestController
 @RequestMapping("/api/v1/reviews")
 @RequiredArgsConstructor
@@ -86,4 +91,24 @@ public RsData<?> getReviewsByConcert(
                 reviewPostService.getReviewsByConcert(concertId)
         );
     }
+
+    @Operation(summary = "후기 게시글 검색", description = "제목 또는 내용에 키워드를 포함하고 있는 후기 게시글을 검색합니다.")
+    @GetMapping("/search")
+    public RsData<List<ReviewPostResponse>> search(
+            @Schema(description = """
+                <h3>검색어가 되는 Keyword입니다.</h3>
+                <hr/>
+                <b>?keyword={keyword}</b> 로 값을 넘기시면 됩니다.<br/>
+                제목 또는 내용에 해당 문자열을 포함하는
+                후기 게시글을 페이징된 만큼 반환합니다.
+                """)
+            @RequestParam String keyword,
+
+            @Schema(description = "페이징 처리 또는 무한 스크롤 구현에 사용하는 Pageable 객체입니다.")
+            @Parameter(hidden = true) Pageable pageable
+    ) {
+        return RsData.success(
+                reviewPostService.searchByKeyword(keyword, pageable)
+        );
+    }
 }

src/main/java/com/back/web7_9_codecrete_be/domain/community/post/repository/JoinPostRepository.java

@@ -4,7 +4,29 @@
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.util.List;
 
 public interface JoinPostRepository extends JpaRepository<JoinPost, Long> {
     Page<JoinPost> findByPost_UserId(Long userId, Pageable pageable);
+
+    @Query("""
+    SELECT
+        jp
+    FROM
+        JoinPost jp
+    JOIN FETCH
+        jp.post p
+    WHERE
+        p.title LIKE %:keyword%
+        OR p.content LIKE %:keyword%
+    ORDER BY
+        p.createdDate DESC
+""")
+    List<JoinPost> searchByKeyword(
+            @Param("keyword") String keyword,
+            Pageable pageable
+    );
 }

src/main/java/com/back/web7_9_codecrete_be/domain/community/post/repository/ReviewPostRepository.java

@@ -4,7 +4,29 @@
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.util.List;
 
 public interface ReviewPostRepository extends JpaRepository<ReviewPost, Long> {
     Page<ReviewPost> findByPost_UserId(Long userId, Pageable pageable);
+
+    @Query("""
+        SELECT
+            rp
+        FROM
+            ReviewPost rp
+        JOIN FETCH
+            rp.post p
+        WHERE
+            p.title LIKE %:keyword%
+            OR p.content LIKE %:keyword%
+        ORDER BY
+            p.createdDate DESC
+    """)
+    List<ReviewPost> searchByKeyword(
+            @Param("keyword") String keyword,
+            Pageable pageable
+    );
 }

src/main/java/com/back/web7_9_codecrete_be/domain/community/post/service/JoinPostService.java

@@ -14,9 +14,12 @@
 import com.back.web7_9_codecrete_be.global.error.code.PostErrorCode;
 import com.back.web7_9_codecrete_be.global.error.exception.BusinessException;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.List;
+
 @Service
 @RequiredArgsConstructor
 public class JoinPostService {
@@ -117,4 +120,15 @@ public void close(Long postId, Long userId) {
 
         joinPost.close(); // status = CLOSED
     }
+
+    public List<JoinPostResponse> searchByKeyword(String keyword, Pageable pageable) {
+        if (keyword == null || keyword.isEmpty()) {
+            throw new BusinessException(PostErrorCode.KEYWORD_IS_NULL);
+        }
+
+        return joinPostRepository.searchByKeyword(keyword, pageable)
+                .stream()
+                .map(JoinPostResponse::from)
+                .toList();
+    }
 }

src/main/java/com/back/web7_9_codecrete_be/domain/community/post/service/ReviewPostService.java

@@ -20,6 +20,7 @@
 import com.back.web7_9_codecrete_be.global.storage.ImageFileValidator;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
@@ -268,5 +269,23 @@ private ReviewItemResponse toReviewItem(ReviewPost reviewPost) {
                 .createdDate(reviewPost.getPost().getCreatedDate())
                 .build();
     }
+
+    public List<ReviewPostResponse> searchByKeyword(String keyword, Pageable pageable) {
+        if (keyword == null || keyword.isBlank()) {
+            throw new BusinessException(PostErrorCode.KEYWORD_IS_NULL);
+        }
+
+        return reviewPostRepository.searchByKeyword(keyword, pageable)
+                .stream()
+                .map(reviewPost -> {
+                    List<String> imageUrls = reviewPost.getImages()
+                            .stream()
+                            .map(ReviewImage::getImageUrl)
+                            .toList();
+
+                    return ReviewPostResponse.from(reviewPost, imageUrls);
+                })
+                .toList();
+    }
 }
 

src/main/java/com/back/web7_9_codecrete_be/global/error/code/PostErrorCode.java

@@ -40,6 +40,13 @@ public enum PostErrorCode implements ErrorCode {
             HttpStatus.BAD_REQUEST,
             "P-130",
             "이미 삭제된 게시글입니다."
+    ),
+
+    // 검색 관련
+    KEYWORD_IS_NULL(
+            HttpStatus.BAD_REQUEST,
+            "P-140",
+            "검색어는 필수입니다."
     );
 
     private final HttpStatus status;