Image logic 개발

src/main/java/server/drawwang/domain/board/controller/BoardController.java

@@ -33,7 +33,7 @@ public ResponseEntity<BoardListResponse> listBoard() {
     }
 
     @PatchMapping("/{boardId}/like")
-    public ResponseEntity<Void> boaardLikes(@PathVariable Long boardId) {
+    public ResponseEntity<Void> boardLikes(@PathVariable Long boardId) {
         boardService.boardLike(boardId);
         return new ResponseEntity<>(HttpStatus.OK);
     }

src/main/java/server/drawwang/domain/board/service/implementation/BoardServiceImpl.java

@@ -56,7 +56,7 @@ public List<ToBoardResponse> listBoard() {
                         boardEntity.getId(),
                         boardEntity.getUserName(),
                         boardEntity.getThread().getId(),
-                        fileStore.getPartialImagesPath(boardEntity.getImageId()),
+                        boardEntity.getImageId(),
                         boardEntity.getLikes(),
                         boardEntity.getReports()))
                 .toList();

src/main/java/server/drawwang/domain/board/service/implementation/event/Listener/BoardLikedEventListener.java → src/main/java/server/drawwang/domain/board/service/implementation/event/listener/BoardLikedEventListener.java

@@ -1,4 +1,4 @@
-package server.drawwang.domain.board.service.implementation.event.Listener;
+package server.drawwang.domain.board.service.implementation.event.listener;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;

src/main/java/server/drawwang/domain/board/service/implementation/event/Listener/SubmittedBoardEventListener.java → src/main/java/server/drawwang/domain/board/service/implementation/event/listener/SubmittedBoardEventListener.java

@@ -1,4 +1,4 @@
-package server.drawwang.domain.board.service.implementation.event.Listener;
+package server.drawwang.domain.board.service.implementation.event.listener;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;

src/main/java/server/drawwang/domain/file/FileStore.java

@@ -21,14 +21,6 @@ public String getFullPath(String fileName) {
         return Paths.get(getFilePath(), fileName).toString();
     }
 
-    public String getPartialImagesPath(String fileName) {
-        if(fileName.isEmpty()) {
-            return "";
-        }
-
-        return File.separator + Paths.get("static", "images", fileName);
-    }
-
     public String storeFile(MultipartFile multipartFile)
     {
         if (multipartFile.isEmpty()) {

src/main/java/server/drawwang/domain/file/controller/FileController.java

@@ -0,0 +1,26 @@
+package server.drawwang.domain.file.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import server.drawwang.domain.file.entity.ToFileResponse;
+import server.drawwang.domain.file.entity.dto.response.FileListResponse;
+import server.drawwang.domain.file.service.FileService;
+
+import java.util.List;
+
+@RequiredArgsConstructor
+@RestController
+@RequestMapping("/api/image")
+public class FileController {
+    private final FileService fileService;
+
+    @GetMapping
+    public ResponseEntity<FileListResponse> downloadImage(@RequestParam("boardId") long[] paramBoardId) {
+        List<ToFileResponse> responses = fileService.listImage(paramBoardId);
+        return new ResponseEntity<>(new FileListResponse(responses), HttpStatus.OK);
+    }
+}
+
+

src/main/java/server/drawwang/domain/file/entity/ToFileResponse.java

@@ -0,0 +1,13 @@
+package server.drawwang.domain.file.entity;
+
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class ToFileResponse {
+
+    private final long boardId;
+    private final byte[] imageByte;
+}

src/main/java/server/drawwang/domain/file/entity/dto/response/FileListResponse.java

@@ -0,0 +1,13 @@
+package server.drawwang.domain.file.entity.dto.response;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import server.drawwang.domain.file.entity.ToFileResponse;
+
+import java.util.List;
+
+@Getter
+@AllArgsConstructor
+public class FileListResponse {
+    List<ToFileResponse> imageBytes;
+}

src/main/java/server/drawwang/domain/file/service/FileService.java

@@ -0,0 +1,9 @@
+package server.drawwang.domain.file.service;
+
+import server.drawwang.domain.file.entity.ToFileResponse;
+
+import java.util.List;
+
+public interface FileService {
+    List<ToFileResponse> listImage(long[] paramBoardId);
+}

src/main/java/server/drawwang/domain/file/service/implementation/FileServiceImpl.java

@@ -0,0 +1,52 @@
+package server.drawwang.domain.file.service.implementation;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.UrlResource;
+import org.springframework.stereotype.Service;
+import server.drawwang.domain.board.entity.BoardEntity;
+import server.drawwang.domain.board.repository.BoardRepository;
+import server.drawwang.domain.file.FileStore;
+import server.drawwang.domain.file.entity.ToFileResponse;
+import server.drawwang.domain.file.service.FileService;
+import server.drawwang.global.exception.CustomErrorCode;
+import server.drawwang.global.exception.CustomException;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+public class FileServiceImpl implements FileService {
+
+    private final BoardRepository boardRepository;
+    private final FileStore fileStore;
+
+    @Override
+    public List<ToFileResponse> listImage(long[] paramBoardId) {
+        try {
+            List<ToFileResponse> responses = new ArrayList<>();
+            for (long boardId : paramBoardId) {
+                BoardEntity boardEntity = boardRepository.findById(boardId)
+                        .orElseThrow(() -> new CustomException(CustomErrorCode.BOARD_NOT_FOUND_ERROR));
+                Resource resource = new UrlResource("file:" + fileStore.getFullPath(boardEntity.getImageId()));
+
+                if (resource.exists() && resource.isReadable()) {
+                    byte[] imageByte = resource.getInputStream().readAllBytes();
+                    responses.add(new ToFileResponse(boardId, imageByte));
+
+                } else {
+                    throw new CustomException(CustomErrorCode.IMAGE_NOT_FOUND_ERROR);
+                }
+            }
+            return responses;
+
+        } catch (MalformedURLException e) {
+            throw new CustomException(CustomErrorCode.IMAGE_NOT_FOUND_ERROR);
+        } catch (IOException e) {
+            throw new CustomException(CustomErrorCode.FILE_PROCESSING_ERROR);
+        }
+    }
+}

src/main/java/server/drawwang/domain/thread/service/implementation/ThreadServiceImpl.java

@@ -5,7 +5,6 @@
 import org.springframework.transaction.annotation.Transactional;
 import server.drawwang.domain.board.entity.BoardEntity;
 import server.drawwang.domain.board.repository.BoardRepository;
-import server.drawwang.domain.file.FileStore;
 import server.drawwang.domain.thread.entity.ThreadEntity;
 import server.drawwang.domain.thread.entity.dto.request.CreateThreadRequest;
 import server.drawwang.domain.thread.entity.dto.response.ToThreadResponse;
@@ -23,7 +22,6 @@ public class ThreadServiceImpl implements ThreadService {
 
     private final ThreadRepository threadRepository;
     private final BoardRepository boardRepository;
-    private final FileStore fileStore;
 
     @Override
     @Transactional(rollbackFor = {Exception.class})
@@ -47,13 +45,12 @@ public List<ToThreadResponse> getThread() {
                     String kingImageId = Optional.ofNullable(kingBoardId)
                             .flatMap(id -> boardRepository.findById(id).map(BoardEntity::getImageId))
                             .orElse("");
-                    String kingImageUrl = fileStore.getPartialImagesPath(kingImageId);
 
                     return new ToThreadResponse(
                             threadEntity.getId(),
                             threadEntity.getThreadName(),
                             kingBoardId,
-                            kingImageUrl,
+                            kingImageId,
                             threadEntity.getExpirationDate()
                     );
                 })

src/main/java/server/drawwang/global/exception/CustomErrorCode.java

@@ -12,6 +12,7 @@ public enum CustomErrorCode {
     THREAD_KING_NOT_FOUND_ERROR(HttpStatus.NOT_FOUND, "쓰레드 왕의 게시물을 찾을 수 없습니다."),
     THREAD_NOT_FOUND_ERROR(HttpStatus.NOT_FOUND, "쓰레드를 찾을 수 없습니다."),
     BOARD_NOT_FOUND_ERROR(HttpStatus.NOT_FOUND, "게시물을 찾을 수 없습니다."),
+    IMAGE_NOT_FOUND_ERROR(HttpStatus.NOT_FOUND, "이미지를 찾을 수 없습니다."),
 
     //==500==//
     FILE_PROCESSING_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "파일을 처리할 수 없습니다."),