diff --git a/src/main/java/com/dku/council/domain/like/model/LikeTarget.java b/src/main/java/com/dku/council/domain/like/model/LikeTarget.java
index 04e19268..06010a96 100644
--- a/src/main/java/com/dku/council/domain/like/model/LikeTarget.java
+++ b/src/main/java/com/dku/council/domain/like/model/LikeTarget.java
@@ -2,5 +2,6 @@
 
 public enum LikeTarget {
     POST,
-    COMMENT
+    COMMENT,
+    WITH_DANKOOK
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/controller/TradeController.java b/src/main/java/com/dku/council/domain/with_dankook/controller/TradeController.java
index 45a8ec6c..c1f8f20d 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/controller/TradeController.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/controller/TradeController.java
@@ -1,9 +1,15 @@
 package com.dku.council.domain.with_dankook.controller;
 
+import com.dku.council.domain.like.model.LikeTarget;
+import com.dku.council.domain.like.service.LikeService;
 import com.dku.council.domain.post.model.dto.response.ResponsePage;
+import com.dku.council.domain.with_dankook.model.WithDankookStatus;
 import com.dku.council.domain.with_dankook.model.dto.list.SummarizedTradeDto;
 import com.dku.council.domain.with_dankook.model.dto.request.RequestCreateTradeDto;
+import com.dku.council.domain.with_dankook.model.dto.response.ResponseSingleTradeDto;
+import com.dku.council.domain.with_dankook.model.entity.type.Trade;
 import com.dku.council.domain.with_dankook.service.TradeService;
+import com.dku.council.domain.with_dankook.service.WithDankookService;
 import com.dku.council.global.auth.jwt.AppAuthentication;
 import com.dku.council.global.auth.role.UserAuth;
 import com.dku.council.global.model.dto.ResponseIdDto;
@@ -16,6 +22,7 @@
 import org.springframework.web.bind.annotation.*;
 
 import javax.validation.Valid;
+import javax.validation.constraints.NotNull;
 
 @Tag(name = "단국 거래 게시판", description = "단국 거래 게시판 API")
 @RestController
@@ -24,6 +31,7 @@
 public class TradeController {
 
     private final TradeService tradeService;
+    private final LikeService likeService;
 
     /**
      * 단국 거래 게시글 목록 조회
@@ -41,6 +49,19 @@ public ResponsePage<SummarizedTradeDto> list(@RequestParam(required = false) Str
         return new ResponsePage<>(list);
     }
 
+    /**
+     * 단국 거래 게시글 상세 조회
+     *
+     * @param id   게시글 id
+     * @return     단국 거래 게시글 상세 정보
+     */
+    @GetMapping("/{id}")
+    @UserAuth
+    public ResponseSingleTradeDto findOne(AppAuthentication auth,
+                                          @PathVariable Long id) {
+        return tradeService.findOne(id, auth.getUserId(), auth.getUserRole());
+    }
+
     /**
      * 단국 거래 게시글 등록
      */
@@ -55,12 +76,61 @@ public ResponseIdDto create(AppAuthentication auth,
     /**
      * 단국 거래 게시글 삭제
      *
-     * @param auth 사용자 인증정보
-     * @param id   삭제할 게시글 id
+     * @param id   게시글 id
      */
     @DeleteMapping("/{id}")
     @UserAuth
     public void delete(AppAuthentication auth, @PathVariable Long id) {
         tradeService.delete(id, auth.getUserId(), auth.isAdmin());
     }
+
+    /**
+     * 단국 거래 게시글 판매 완료 처리
+     * 유저가 처리하거나 관리자가 강제로 처리할 수 있습니다.
+     *
+     * @param id   게시글 id
+     */
+    @PatchMapping("/{id}")
+    @UserAuth
+    public void close(AppAuthentication auth, @PathVariable Long id) {
+        tradeService.close(id, auth.getUserId());
+    }
+
+    /**
+     * 단국 거래 게시글 좋아요 표시
+     * 중복으로 좋아요 처리해도 1개만 적용됩니다.
+     *
+     * @param id   게시글 id
+     */
+    @PostMapping("/{id}/like")
+    @UserAuth
+    public void like(AppAuthentication auth, @PathVariable Long id) {
+        likeService.like(id, auth.getUserId(), LikeTarget.WITH_DANKOOK);
+    }
+
+    /**
+     * 단국 거래 게시글 좋아요 취소
+     * 중복으로 좋아요 취소해도 최초 1번만 적용됩니다.
+     *
+     * @param id   게시글 id
+     */
+    @DeleteMapping("/{id}/like")
+    @UserAuth
+    public void cancelLike(AppAuthentication auth, @PathVariable Long id) {
+        likeService.cancelLike(id, auth.getUserId(), LikeTarget.WITH_DANKOOK);
+    }
+
+    /**
+     * 내가 작성한 단국 거래 게시글 목록 조회
+     *
+     * @param pageable 페이징 size, sort, page
+     * @return         페이징된 내가 쓴 단국 거래 게시판 목록
+     */
+    @GetMapping("/my")
+    @UserAuth
+    public ResponsePage<SummarizedTradeDto> listMyPosts(AppAuthentication auth,
+                                                         @ParameterObject Pageable pageable) {
+        Page<SummarizedTradeDto> list = tradeService.listMyPosts(auth.getUserId(), pageable);
+        return new ResponsePage<>(list);
+    }
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/exception/ImageSizeExceededException.java b/src/main/java/com/dku/council/domain/with_dankook/exception/ImageSizeExceededException.java
new file mode 100644
index 00000000..5f665ab8
--- /dev/null
+++ b/src/main/java/com/dku/council/domain/with_dankook/exception/ImageSizeExceededException.java
@@ -0,0 +1,11 @@
+package com.dku.council.domain.with_dankook.exception;
+
+import com.dku.council.global.error.exception.LocalizedMessageException;
+import org.springframework.http.HttpStatus;
+
+public class ImageSizeExceededException extends LocalizedMessageException {
+
+    public ImageSizeExceededException() {
+        super(HttpStatus.BAD_REQUEST, "invalid.imagesize");
+    }
+}
diff --git a/src/main/java/com/dku/council/domain/with_dankook/exception/WithDankookNotFoundException.java b/src/main/java/com/dku/council/domain/with_dankook/exception/WithDankookNotFoundException.java
new file mode 100644
index 00000000..584b842b
--- /dev/null
+++ b/src/main/java/com/dku/council/domain/with_dankook/exception/WithDankookNotFoundException.java
@@ -0,0 +1,11 @@
+package com.dku.council.domain.with_dankook.exception;
+
+import com.dku.council.global.error.exception.LocalizedMessageException;
+import org.springframework.http.HttpStatus;
+
+public class WithDankookNotFoundException extends LocalizedMessageException {
+
+    public WithDankookNotFoundException() {
+        super(HttpStatus.NOT_FOUND, "notfound.withdankook");
+    }
+}
diff --git a/src/main/java/com/dku/council/domain/with_dankook/model/dto/TradeImageDto.java b/src/main/java/com/dku/council/domain/with_dankook/model/dto/TradeImageDto.java
index f911e42a..3ea0afd0 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/model/dto/TradeImageDto.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/model/dto/TradeImageDto.java
@@ -3,6 +3,7 @@
 import com.dku.council.domain.with_dankook.model.entity.TradeImage;
 import com.dku.council.infra.nhn.s3.service.ObjectUploadContext;
 import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
 import org.springframework.http.MediaType;
 
 import java.util.ArrayList;
@@ -10,6 +11,7 @@
 import java.util.Objects;
 import java.util.stream.Collectors;
 
+@Getter
 public class TradeImageDto {
 
     @Schema(description = "이미지 아이디", example = "1")
diff --git a/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedTradeDto.java b/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedTradeDto.java
index cf09a345..2a53b257 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedTradeDto.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedTradeDto.java
@@ -1,10 +1,13 @@
 package com.dku.council.domain.with_dankook.model.dto.list;
 
+import com.dku.council.domain.with_dankook.model.WithDankookStatus;
 import com.dku.council.domain.with_dankook.model.dto.TradeImageDto;
 import com.dku.council.domain.with_dankook.model.entity.type.Trade;
 import com.dku.council.infra.nhn.s3.service.ObjectUploadContext;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Getter;
+import org.springframework.context.MessageSource;
+import org.springframework.context.i18n.LocaleContextHolder;
 
 import java.util.List;
 
@@ -26,12 +29,16 @@ public class SummarizedTradeDto extends SummarizedWithDankookDto{
     @Schema(description = "이미지 목록")
     private final List<TradeImageDto> images;
 
-    public SummarizedTradeDto(SummarizedWithDankookDto dto, Trade trade, ObjectUploadContext context){
+    @Schema(description = "거래 상태", example = "거래중")
+    private final String status;
+
+    public SummarizedTradeDto(SummarizedWithDankookDto dto, Trade trade, ObjectUploadContext context, MessageSource messageSource){
         super(dto);
         this.title = trade.getTitle();
         this.price = trade.getPrice();
         this.content = trade.getContent();
         this.tradePlace = trade.getTradePlace();
         this.images = TradeImageDto.listOf(context, trade.getImages());
+        this.status = messageSource.getMessage("withdankook.trade." + trade.getWithDankookStatus().name().toLowerCase(), null, LocaleContextHolder.getLocale());
     }
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedWithDankookDto.java b/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedWithDankookDto.java
index 0cea4ab5..2a308f7e 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedWithDankookDto.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/model/dto/list/SummarizedWithDankookDto.java
@@ -21,11 +21,15 @@ public class SummarizedWithDankookDto {
     @Schema(description = "채팅 링크", example = "https://open.kakao.com/o/ghjgjgjg")
     private final String chatLink;
 
+    @Schema(description = "게시글 타입", example = "TRADE")
+    private final String type;
+
     public SummarizedWithDankookDto(int bodySize, WithDankook withDankook) {
         this.id = withDankook.getId();
         this.author = withDankook.getDisplayingUsername();
         this.createdAt = withDankook.getCreatedAt();
         this.chatLink = withDankook.getChatLink();
+        this.type = withDankook.getClass().getSimpleName().toUpperCase();
     }
 
     public SummarizedWithDankookDto(SummarizedWithDankookDto copy) {
@@ -33,5 +37,6 @@ public SummarizedWithDankookDto(SummarizedWithDankookDto copy) {
         this.author = copy.getAuthor();
         this.createdAt = copy.getCreatedAt();
         this.chatLink = copy.getChatLink();
+        this.type = copy.getType();
     }
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/model/dto/response/ResponseSingleTradeDto.java b/src/main/java/com/dku/council/domain/with_dankook/model/dto/response/ResponseSingleTradeDto.java
new file mode 100644
index 00000000..3b2622a5
--- /dev/null
+++ b/src/main/java/com/dku/council/domain/with_dankook/model/dto/response/ResponseSingleTradeDto.java
@@ -0,0 +1,43 @@
+package com.dku.council.domain.with_dankook.model.dto.response;
+
+import com.dku.council.domain.with_dankook.model.dto.TradeImageDto;
+import com.dku.council.domain.with_dankook.model.entity.type.Trade;
+import com.dku.council.infra.nhn.s3.service.ObjectUploadContext;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+import org.springframework.context.MessageSource;
+import org.springframework.context.i18n.LocaleContextHolder;
+
+import java.util.List;
+
+@Getter
+public class ResponseSingleTradeDto extends ResponseSingleWithDankookDto {
+
+    @Schema(description = "제목", example = "물물교환")
+    private final String title;
+
+    @Schema(description = "가격", example = "10000")
+    private final int price;
+
+    @Schema(description = "내용", example = "게시글 본문")
+    private final String content;
+
+    @Schema(description = "거래 장소", example = "단국대학교 정문")
+    private final String tradePlace;
+
+    @Schema(description = "이미지 목록")
+    private final List<TradeImageDto> images;
+
+    @Schema(description = "거래 상태", example = "거래중")
+    private final String status;
+
+    public ResponseSingleTradeDto(ResponseSingleWithDankookDto dto, Trade trade, ObjectUploadContext context, MessageSource messageSource) {
+        super(dto);
+        this.title = trade.getTitle();
+        this.price = trade.getPrice();
+        this.content = trade.getContent();
+        this.tradePlace = trade.getTradePlace();
+        this.images = TradeImageDto.listOf(context, trade.getImages());
+        this.status = messageSource.getMessage("withdankook.trade." + trade.getWithDankookStatus().name().toLowerCase(), null, LocaleContextHolder.getLocale());
+    }
+}
diff --git a/src/main/java/com/dku/council/domain/with_dankook/model/dto/response/ResponseSingleWithDankookDto.java b/src/main/java/com/dku/council/domain/with_dankook/model/dto/response/ResponseSingleWithDankookDto.java
new file mode 100644
index 00000000..4c4017f5
--- /dev/null
+++ b/src/main/java/com/dku/council/domain/with_dankook/model/dto/response/ResponseSingleWithDankookDto.java
@@ -0,0 +1,57 @@
+package com.dku.council.domain.with_dankook.model.dto.response;
+
+import com.dku.council.domain.with_dankook.model.entity.WithDankook;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+
+@Getter
+public class ResponseSingleWithDankookDto {
+
+    @Schema(description = "게시글 아이디", example = "1")
+    private final Long id;
+
+    @Schema(description = "작성자", example = "익명")
+    private final String author;
+
+    @Schema(description = "생성 날짜")
+    private final LocalDateTime createdAt;
+
+    @Schema(description = "채팅 링크", example = "https://open.kakao.com/o/ghjgjgjg")
+    private final String chatLink;
+
+    @Schema(description = "좋아요 수", example = "26")
+    private final int likes;
+
+    @Schema(description = "내가 쓴 게시물인지?", example = "true")
+    private final boolean isMine;
+
+    @Schema(description = "내가 좋아요를 눌렀는지?", example = "false")
+    private final boolean isLiked;
+
+    @Schema(description = "닫힘 여부", example = "false")
+    private final boolean isClosed;
+
+    public ResponseSingleWithDankookDto(int likes, boolean isMine, boolean isLiked, WithDankook withDankook) {
+        this.id = withDankook.getId();
+        this.author = withDankook.getDisplayingUsername();
+        this.createdAt = withDankook.getCreatedAt();
+        this.chatLink = withDankook.getChatLink();
+        this.likes = likes;
+        this.isMine = isMine;
+        this.isLiked = isLiked;
+        this.isClosed = withDankook.isClosed();
+    }
+
+    public ResponseSingleWithDankookDto(ResponseSingleWithDankookDto copy) {
+        this.id = copy.id;
+        this.author = copy.author;
+        this.createdAt = copy.createdAt;
+        this.chatLink = copy.chatLink;
+        this.likes = copy.likes;
+        this.isMine = copy.isMine;
+        this.isLiked = copy.isLiked;
+        this.isClosed = copy.isClosed;
+    }
+}
diff --git a/src/main/java/com/dku/council/domain/with_dankook/model/entity/WithDankook.java b/src/main/java/com/dku/council/domain/with_dankook/model/entity/WithDankook.java
index 1daa930e..9680f452 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/model/entity/WithDankook.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/model/entity/WithDankook.java
@@ -58,4 +58,12 @@ protected WithDankook(User user, String chatLink) {
     public void markAsDeleted(boolean byAdmin) {
         this.withDankookStatus = byAdmin ? WithDankookStatus.DELETED_BY_ADMIN : WithDankookStatus.DELETED;
     }
+
+    public boolean isClosed() {
+        return withDankookStatus == WithDankookStatus.CLOSED;
+    }
+
+    public void close() {
+        this.withDankookStatus = WithDankookStatus.CLOSED;
+    }
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/repository/WithDankookRepository.java b/src/main/java/com/dku/council/domain/with_dankook/repository/WithDankookRepository.java
index 2e7dc7f2..f802460c 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/repository/WithDankookRepository.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/repository/WithDankookRepository.java
@@ -1,6 +1,9 @@
 package com.dku.council.domain.with_dankook.repository;
 
+import com.dku.council.domain.with_dankook.model.dto.list.SummarizedTradeDto;
 import com.dku.council.domain.with_dankook.model.entity.WithDankook;
+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.JpaSpecificationExecutor;
 import org.springframework.data.jpa.repository.Query;
@@ -16,4 +19,14 @@ public interface WithDankookRepository<T extends WithDankook> extends JpaReposit
             "join fetch u.major " +
             "where w.id=:id and w.withDankookStatus ='ACTIVE' ")
     Optional<T> findById(@Param("id") Long id);
+
+    @Query("select w from WithDankook w " +
+            "join fetch w.masterUser u " +
+            "join fetch u.major " +
+            "where w.id=:withDankookId and (w.withDankookStatus='CLOSED' or w.withDankookStatus='ACTIVE')")
+    Optional<T> findWithClosedById(@Param("withDankookId") Long withDankookId);
+
+    @Query("select w from WithDankook w " +
+            "where w.masterUser.id=:userId and (w.withDankookStatus='ACTIVE' or w.withDankookStatus='CLOSED')")
+    Page<T> findAllByUserId(@Param("userId") Long userId, Pageable pageable);
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/service/TradeService.java b/src/main/java/com/dku/council/domain/with_dankook/service/TradeService.java
index f0eab39c..511c6a08 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/service/TradeService.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/service/TradeService.java
@@ -1,16 +1,23 @@
 package com.dku.council.domain.with_dankook.service;
 
+import com.dku.council.domain.like.service.LikeService;
 import com.dku.council.domain.post.service.ThumbnailService;
 import com.dku.council.domain.user.model.entity.User;
 import com.dku.council.domain.user.repository.UserRepository;
+import com.dku.council.domain.with_dankook.exception.ImageSizeExceededException;
 import com.dku.council.domain.with_dankook.exception.TradeCooltimeException;
+import com.dku.council.domain.with_dankook.exception.WithDankookNotFoundException;
+import com.dku.council.domain.with_dankook.model.WithDankookStatus;
 import com.dku.council.domain.with_dankook.model.dto.list.SummarizedTradeDto;
 import com.dku.council.domain.with_dankook.model.dto.request.RequestCreateTradeDto;
+import com.dku.council.domain.with_dankook.model.dto.response.ResponseSingleTradeDto;
 import com.dku.council.domain.with_dankook.model.entity.TradeImage;
 import com.dku.council.domain.with_dankook.model.entity.type.Trade;
 import com.dku.council.domain.with_dankook.repository.TradeRepository;
 import com.dku.council.domain.with_dankook.repository.WithDankookMemoryRepository;
 import com.dku.council.domain.with_dankook.repository.spec.WithDankookSpec;
+import com.dku.council.global.auth.role.UserRole;
+import com.dku.council.global.error.exception.NotGrantedException;
 import com.dku.council.global.error.exception.UserNotFoundException;
 import com.dku.council.infra.nhn.s3.model.ImageRequest;
 import com.dku.council.infra.nhn.s3.model.UploadedImage;
@@ -19,6 +26,7 @@
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.MessageSource;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.domain.Specification;
@@ -31,6 +39,7 @@
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 
 @Service
 @RequiredArgsConstructor
@@ -45,9 +54,11 @@ public class TradeService {
     private final UserRepository userRepository;
 
     private final WithDankookService<Trade> withDankookService;
+    private final LikeService likeService;
     private final ImageUploadService imageUploadService;
     private final ThumbnailService thumbnailService;
     private final ObjectUploadContext objectUploadContext;
+    private final MessageSource messageSource;
 
     private final Clock clock;
 
@@ -80,6 +91,9 @@ public Long create(Long userId, RequestCreateTradeDto dto) {
     }
 
     private void attachImages(Trade trade, List<MultipartFile> dtoImages) {
+        if (dtoImages.size() > 10) {
+            throw new ImageSizeExceededException();
+        }
         List<UploadedImage> images = imageUploadService.newContext().uploadImages(
                 ImageRequest.ofList(dtoImages),
                 trade.getClass().getSimpleName());
@@ -111,11 +125,44 @@ public Page<SummarizedTradeDto> list(String keyword, Pageable pageable, int body
         spec = spec.and(WithDankookSpec.withActive());
         Page<Trade> result = tradeRepository.findAll(spec, pageable);
         return result.map((trade) ->
-                new SummarizedTradeDto(withDankookService.makeListDto(bodySize, trade), trade, objectUploadContext));
+                new SummarizedTradeDto(withDankookService.makeListDto(bodySize, trade), trade, objectUploadContext, messageSource));
+    }
+
+    @Transactional(readOnly = true)
+    public ResponseSingleTradeDto findOne(Long tradeId, Long userId, UserRole role) {
+        Trade trade = findTrade(tradeRepository, tradeId, role);
+        return new ResponseSingleTradeDto(withDankookService.makeSingleDto(userId, trade), trade, objectUploadContext, messageSource);
+    }
+
+    private Trade findTrade(TradeRepository tradeRepository, Long tradeId, UserRole role) {
+        Optional<Trade> trade;
+        if (role.isAdmin()) {
+            trade = tradeRepository.findWithClosedById(tradeId);
+        } else {
+            trade = tradeRepository.findById(tradeId);
+        }
+        return trade.orElseThrow(WithDankookNotFoundException::new);
     }
 
     @Transactional
     public void delete(Long tradeId, Long userId, boolean isAdmin) {
         withDankookService.delete(tradeRepository, tradeId, userId, isAdmin);
     }
+
+    @Transactional
+    public void close(Long tradeId, Long userId) {
+        tradeRepository.findById(tradeId).ifPresent(trade -> {
+            if (trade.getMasterUser().getId().equals(userId)) {
+                trade.close();
+            } else{
+                throw new NotGrantedException();
+            }
+        });
+    }
+
+    @Transactional(readOnly = true)
+    public Page<SummarizedTradeDto> listMyPosts(Long userId, Pageable pageable) {
+        return tradeRepository.findAllByUserId(userId, pageable)
+                .map(trade -> new SummarizedTradeDto(withDankookService.makeListDto(50, trade), trade, objectUploadContext, messageSource));
+    }
 }
diff --git a/src/main/java/com/dku/council/domain/with_dankook/service/WithDankookService.java b/src/main/java/com/dku/council/domain/with_dankook/service/WithDankookService.java
index b599eafd..356ed3a9 100644
--- a/src/main/java/com/dku/council/domain/with_dankook/service/WithDankookService.java
+++ b/src/main/java/com/dku/council/domain/with_dankook/service/WithDankookService.java
@@ -1,25 +1,35 @@
 package com.dku.council.domain.with_dankook.service;
 
+import com.dku.council.domain.like.model.LikeTarget;
+import com.dku.council.domain.like.service.LikeService;
 import com.dku.council.domain.post.exception.PostNotFoundException;
 import com.dku.council.domain.user.repository.UserRepository;
+import com.dku.council.domain.with_dankook.exception.WithDankookNotFoundException;
 import com.dku.council.domain.with_dankook.model.dto.list.SummarizedWithDankookDto;
+import com.dku.council.domain.with_dankook.model.dto.response.ResponseSingleWithDankookDto;
 import com.dku.council.domain.with_dankook.model.entity.WithDankook;
 import com.dku.council.domain.with_dankook.repository.WithDankookRepository;
 import com.dku.council.domain.with_dankook.repository.spec.WithDankookSpec;
+import com.dku.council.global.auth.role.UserRole;
 import com.dku.council.global.error.exception.NotGrantedException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.domain.Specification;
+import org.springframework.lang.Nullable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.Optional;
+
 @Service
 @RequiredArgsConstructor
 public class WithDankookService<E extends WithDankook> {
 
     protected final UserRepository userRepository;
 
+    protected final LikeService likeService;
+
     /**
      * With-Dankook 게시판 글 목록 조회
      */
@@ -54,6 +64,66 @@ public SummarizedWithDankookDto makeListDto(int bodySize, E withDankook) {
         return new SummarizedWithDankookDto(bodySize, withDankook);
     }
 
+    /**
+     * With-Dankook 게시판 글 단건 조회
+     *
+     * @param repository    조회할 게시글 repository
+     * @param withDankookId 조회할 게시글 id
+     * @param userId        요청한 사용자 id
+     * @param role          요청한 사용자의 권한
+     * @return              조회한 게시글
+     */
+    @Transactional
+    public ResponseSingleWithDankookDto findOne(WithDankookRepository<E> repository, Long withDankookId, @Nullable Long userId,
+                                                UserRole role) {
+        E withDankook = findWithDankook(repository, withDankookId, role);
+        return makeSingleDto(userId, withDankook);
+    }
+
+    @Transactional
+    public <T> T findOne(WithDankookRepository<E> repository, Long withDankookId, Long userId, UserRole role,
+                         PostResultMapper<T, ResponseSingleWithDankookDto, E> mapper) {
+        E withDankook = findWithDankook(repository, withDankookId, role);
+        ResponseSingleWithDankookDto dto = makeSingleDto(userId, withDankook);
+
+        try {
+            return mapper.map(dto, withDankook);
+        } catch (Exception e) {
+            throw new WithDankookNotFoundException();
+        }
+    }
+
+    public ResponseSingleWithDankookDto makeSingleDto(Long userId, E withDankook) {
+        int likes = likeService.getCountOfLikes(withDankook.getId(), LikeTarget.WITH_DANKOOK);
+        boolean isMine = false;
+        boolean isLiked = false;
+
+        if (userId != null) {
+            isMine = withDankook.getMasterUser().getId().equals(userId);
+            isLiked = likeService.isLiked(withDankook.getId(), userId, LikeTarget.WITH_DANKOOK);
+        }
+
+        return new ResponseSingleWithDankookDto(likes, isMine, isLiked, withDankook);
+    }
+
+    /**
+     * With-Dankook 게시판 글을 조회합니다.
+     *
+     * @param repository     조회할 게시글 repository
+     * @param withDankookId  조회할 게시글 id
+     * @param role           요청한 사용자의 권한
+     * @return               조회한 게시글
+     */
+    private E findWithDankook(WithDankookRepository<E> repository, Long withDankookId, UserRole role) {
+        Optional<E> withDankook;
+        if (role.isAdmin()) {
+            withDankook = repository.findWithClosedById(withDankookId);
+        } else {
+            withDankook = repository.findById(withDankookId);
+        }
+        return withDankook.orElseThrow(WithDankookNotFoundException::new);
+    }
+
     /**
      * With-Dankook 게시판 글 삭제. 실제 DB에서 삭제는 하지 않는다.
      *
diff --git a/src/main/resources/errors.properties b/src/main/resources/errors.properties
index abccacac..0c638349 100644
--- a/src/main/resources/errors.properties
+++ b/src/main/resources/errors.properties
@@ -45,6 +45,7 @@ invalid.full-seats=\uC790\uB9AC\uAC00 \uAF49\uCC28\uC11C \uB354 \uC774\uC0C1 \uC
 invalid.only-jukjeon=\uC8FD\uC804 \uCEA0\uD37C\uC2A4 \uC18C\uC18D\uB9CC \uC2E0\uCCAD\uD560 \uC218 \uC788\uC2B5\uB2C8\uB2E4.
 invalid.ticket-approval = \uC2B9\uC778\uD560 \uC218 \uC5C6\uB294 \uD2F0\uCF13\uC785\uB2C8\uB2E4.
 invalid.dku-auth.refresh=\uB2E8\uAD6D\uB300 \uC778\uC99D\uC774 \uAC31\uC2E0\uB418\uC9C0 \uC54A\uC558\uC2B5\uB2C8\uB2E4.
+invalid.imagesize=\uC774\uBBF8\uC9C0 \uAC1C\uC218\uAC00 \uCD08\uACFC\uD588\uC2B5\uB2C8\uB2E4.
 
 notfound.user=\uC720\uC800\uB97C \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 notfound.post=\uD574\uB2F9 \uAC8C\uC2DC\uAE00\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
@@ -61,6 +62,7 @@ notfound.ticket=\uD574\uB2F9 \uD2F0\uCF13\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5
 notfound.ticket-event=\uD574\uB2F9 \uD2F0\uCF13 \uC774\uBCA4\uD2B8\uB97C \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 notfound.homebus=\uD574\uB2F9 \uADC0\uD5A5\uBC84\uC2A4\uB97C \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 notfound.homebus-ticket=\uD574\uB2F9 \uBC84\uC2A4 \uD2F0\uCF13\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
+notfound.withdankook=\uD574\uB2F9 WithDankook \uAC8C\uC2DC\uAE00\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 
 notsupport.http-method=\uC798\uBABB\uB41C Method \uC694\uCCAD\uC785\uB2C8\uB2E4.
 
diff --git a/src/main/resources/errors_en_US.properties b/src/main/resources/errors_en_US.properties
index eba65ae5..3f20a116 100644
--- a/src/main/resources/errors_en_US.properties
+++ b/src/main/resources/errors_en_US.properties
@@ -45,6 +45,7 @@ invalid.full-seats=The seats are full. ({0} seats)
 invalid.only-jukjeon=Only those belonging to Jukjeon Campus can apply.
 invalid.ticket-approval = Invalid ticket approval.
 invalid.dku-auth.refresh=Dankook University Certification has not been renewed.
+invalid.imagesize=The number of images has exceeded the limit.
 
 notfound.user=Cannot find that user.
 notfound.post=No such post was found.
@@ -61,6 +62,8 @@ notfound.ticket=No such ticket was found.
 notfound.ticket-event=No such ticket event was found.
 notfound.homebus=No such homecoming bus was found.
 notfound.homebus-ticket=No such homecoming bus ticket was found.
+notfound.withdankook=No such withDankook post was found.
+
 
 notsupport.http-method=Not supported HTTP method.
 
diff --git a/src/main/resources/messages.properties b/src/main/resources/messages.properties
index 79529f49..879ae31a 100644
--- a/src/main/resources/messages.properties
+++ b/src/main/resources/messages.properties
@@ -16,3 +16,6 @@ report.category.pornography=\uC74C\uB780\uBB3C/\uBD88\uAC74\uC804\uD55C \uB9CC\u
 report.category.inappropriate_content=\uAC8C\uC2DC\uD310 \uC131\uACA9\uC5D0 \uBD80\uC801\uD569
 report.category.fraud=\uC720\uCD9C/\uC0AC\uCE6D/\uC0AC\uAE30
 
+withdankook.trade.active=\uD310\uB9E4\uC911
+withdankook.trade.closed=\uAC70\uB798\uC644\uB8CC
+
diff --git a/src/main/resources/messages_en_US.properties b/src/main/resources/messages_en_US.properties
index 9da38e3c..e7fc1884 100644
--- a/src/main/resources/messages_en_US.properties
+++ b/src/main/resources/messages_en_US.properties
@@ -14,4 +14,7 @@ report.category.advertisement=advertisement
 report.category.politics=defamation of political figures
 report.category.pornography=obscenity/pornography
 report.category.inappropriate_content=inappropriate content
-report.category.fraud=leakage/impersonation/fraud
\ No newline at end of file
+report.category.fraud=leakage/impersonation/fraud
+
+withdankook.trade.active=Selling
+withdankook.trade.closed=Closed
\ No newline at end of file
diff --git a/src/test/java/com/dku/council/domain/with_dankook/service/TradeServiceTest.java b/src/test/java/com/dku/council/domain/with_dankook/service/TradeServiceTest.java
new file mode 100644
index 00000000..5172387f
--- /dev/null
+++ b/src/test/java/com/dku/council/domain/with_dankook/service/TradeServiceTest.java
@@ -0,0 +1,73 @@
+package com.dku.council.domain.with_dankook.service;
+
+import com.dku.council.domain.like.service.LikeService;
+import com.dku.council.domain.post.repository.PostTimeMemoryRepository;
+import com.dku.council.domain.post.service.ThumbnailService;
+import com.dku.council.domain.user.repository.UserRepository;
+import com.dku.council.domain.with_dankook.model.entity.type.Trade;
+import com.dku.council.domain.with_dankook.repository.TradeRepository;
+import com.dku.council.domain.with_dankook.repository.WithDankookMemoryRepository;
+import com.dku.council.infra.nhn.s3.service.ImageUploadService;
+import com.dku.council.infra.nhn.s3.service.ObjectUploadContext;
+import com.dku.council.util.ClockUtil;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.time.Clock;
+import java.time.Duration;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@ExtendWith(MockitoExtension.class)
+class TradeServiceTest {
+
+    private final Clock clock = ClockUtil.create();
+
+    private final Duration writeCooltime = Duration.ofDays(1);
+
+    @Mock
+    private TradeRepository tradeRepository;
+
+    @Mock
+    private WithDankookMemoryRepository withDankookMemoryRepository;
+
+    @Mock
+    private UserRepository userRepository;
+
+    @Mock
+    private WithDankookService<Trade> withDankookService;
+
+    @Mock
+    private LikeService likeService;
+
+    @Mock
+    private ImageUploadService imageUploadService;
+
+    @Mock
+    private ThumbnailService thumbnailService;
+
+    @Mock
+    private ObjectUploadContext objectUploadContext;
+
+
+
+    private TradeService tradeService;
+
+//    @BeforeEach
+//    public void setup() {
+//        tradeService = new TradeService(tradeRepository, withDankookMemoryRepository, userRepository,
+//                withDankookService, likeService, imageUploadService, thumbnailService, objectUploadContext,
+//                clock, writeCooltime);
+//    }
+//
+//    @Test
+//    @DisplayName("글 작성 - 쿨타임 이전에 작성한 적 없는 경우")
+//    public void create() {
+//
+//    }
+
+}
\ No newline at end of file