feat : 사용자 행동기반 추천#84

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Merged
kjhh2605 merged 1 commit into from
Sep 23, 2025
Merged

feat : 사용자 행동기반 추천 #84

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6 changes: 6 additions & 0 deletions src/main/java/com/DecodEat/domain/products/controller/ProductController.java
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
}

@GetMapping("/recommendation/user-behavior-based")
@Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
}

}
18 changes: 18 additions & 0 deletions ...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java
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@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
private String message;
private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
private List<ProductSearchResponseDto.ProductPrevDto> products;
}
5 changes: 5 additions & 0 deletions src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java
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Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

Page<Product> findByUserId(Long userId, Pageable pageable);

@Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}
38 changes: 38 additions & 0 deletions src/main/java/com/DecodEat/domain/products/service/ProductService.java
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Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
private static final int PAGE_SIZE = 12;
private final UserRepository userRepository;
private final ProductLikeRepository productLikeRepository;
private final UserBehaviorRepository userBehaviorRepository;

public ProductDetailDto getDetail(Long id, User user) {
Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
return productList.stream().map(ProductConverter::toProductPrevDto).toList();
}

public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
Long userId = user.getId();
int randomCase = ThreadLocalRandom.current().nextInt(3);
Behavior selectedBehavior = null;
String message = "";
switch (randomCase) {
case 0:
selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
message = "내가 최근 좋아요한 상품과 관련된 상품";
break;
case 1:
selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
message = "내가 최근 등록한 상품과 관련된 상품";
break;
case 2:
selectedBehavior = Behavior.VIEW; // 2번 조회 기반
message = "내가 최근 조회한 상품과 관련된 상품";
break;

}

Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
.orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

return UserBasedRecommendationResponseDto.builder()
.standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
.message(message)
.products(products)
.build();
}


@Async
public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down
3 changes: 3 additions & 0 deletions src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java
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Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}
2 changes: 1 addition & 1 deletion src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java
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Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

// 추천
NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
// 기본 에러
_BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
_UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
feat : 사용자 행동기반 추천#84

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 Merged

kjhh2605
merged 1 commit into

from

Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat : 사용자 행동기반 추천#84

New issue

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privacy statement. We’ll occasionally send you account related emails.

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 Merged

kjhh2605
merged 1 commit into

from

Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

View file


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Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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feat : 사용자 행동기반 추천#84

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 Merged

kjhh2605
merged 1 commit into

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Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

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Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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feat : 사용자 행동기반 추천#84

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 Merged

kjhh2605
merged 1 commit into

from

Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat : 사용자 행동기반 추천#84

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

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to your account

 Merged

kjhh2605
merged 1 commit into

from

Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

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Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

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Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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feat : 사용자 행동기반 추천#84

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 Merged

kjhh2605
merged 1 commit into

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Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
feat : 사용자 행동기반 추천#84

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 Merged

kjhh2605
merged 1 commit into

from

Sep 23, 2025
 Merged


feat : 사용자 행동기반 추천
#84
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6 changes: 6 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/controller/ProductController.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -121,4 +121,10 @@ public ApiResponse<List<ProductSearchResponseDto.ProductPrevDto>> getProductBase
 return ApiResponse.onSuccess(productService.getProductBasedRecommendation(productId, limit));
 }

 @GetMapping("/recommendation/user-behavior-based")
 @Operation(summary = "상품 기반 추천", description = "사용자 행동 기반 추천")
 public ApiResponse<UserBasedRecommendationResponseDto> getUserBasedRecommendation(@CurrentUser User user) {
 return ApiResponse.onSuccess(productService.getUserBasedRecommendation(user));
 }

}

18 changes: 18 additions & 0 deletions
...in/java/com/DecodEat/domain/products/dto/response/UserBasedRecommendationResponseDto.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
package com.DecodEat.domain.products.dto.response;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import java.util.List;

@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserBasedRecommendationResponseDto {
 private String message;
 private ProductSearchResponseDto.SearchResultPrevDto standardProduct;
 private List<ProductSearchResponseDto.ProductPrevDto> products;
}

5 changes: 5 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/repository/ProductRepository.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -9,9 +9,11 @@
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import com.DecodEat.domain.users.entity.Behavior;
import org.springframework.data.repository.query.Param;

import java.util.List;
import java.util.Optional;

public interface ProductRepository extends JpaRepository<Product, Long>, JpaSpecificationExecutor<Product> {

Expand All@@ -26,4 +28,7 @@ Slice<Product> findCompletedProductsByCursor(@Param("cursorId") Long cursorId,
 void deleteByDecodeStatusIn(List<DecodeStatus> statuses);

 Page<Product> findByUserId(Long userId, Pageable pageable);

 @Query(value = "SELECT p.product_id FROM product p JOIN user_behavior ub ON p.product_id = ub.product_id WHERE ub.user_id = :userId AND ub.behavior = :behavior ORDER BY RAND() LIMIT 1", nativeQuery = true)
 Optional<Long> findRandomProductIdByUserIdAndBehavior(@Param("userId") Long userId, @Param("behavior") Behavior behavior);
}

38 changes: 38 additions & 0 deletions
src/main/java/com/DecodEat/domain/products/service/ProductService.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -12,6 +12,8 @@
import com.DecodEat.domain.products.repository.*;
import com.DecodEat.domain.users.entity.Behavior;
import com.DecodEat.domain.users.entity.User;
import com.DecodEat.domain.users.entity.UserBehavior;
import com.DecodEat.domain.users.repository.UserBehaviorRepository;
import com.DecodEat.domain.users.repository.UserRepository;
import com.DecodEat.domain.users.service.UserBehaviorService;
import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
Expand All@@ -31,6 +33,7 @@

import javax.swing.*;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;

import static com.DecodEat.global.apiPayload.code.status.ErrorStatus.*;
Expand All@@ -51,6 +54,7 @@ public class ProductService {
 private static final int PAGE_SIZE = 12;
 private final UserRepository userRepository;
 private final ProductLikeRepository productLikeRepository;
 private final UserBehaviorRepository userBehaviorRepository;

 public ProductDetailDto getDetail(Long id, User user) {
 Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
Expand DownExpand Up@@ -210,6 +214,40 @@ public List<ProductSearchResponseDto.ProductPrevDto> getProductBasedRecommendati
 return productList.stream().map(ProductConverter::toProductPrevDto).toList();
 }

 public UserBasedRecommendationResponseDto getUserBasedRecommendation(User user) {
 Long userId = user.getId();
 int randomCase = ThreadLocalRandom.current().nextInt(3);
 Behavior selectedBehavior = null;
 String message = "";
 switch (randomCase) {
 case 0:
 selectedBehavior = Behavior.LIKE; // 0번은 좋아요 기반
 message = "내가 최근 좋아요한 상품과 관련된 상품";
 break;
 case 1:
 selectedBehavior = Behavior.REGISTER; // 1번 등록 기반
 message = "내가 최근 등록한 상품과 관련된 상품";
 break;
 case 2:
 selectedBehavior = Behavior.VIEW; // 2번 조회 기반
 message = "내가 최근 조회한 상품과 관련된 상품";
 break;

 }

 Long standardProductId = productRepository.findRandomProductIdByUserIdAndBehavior(userId,selectedBehavior)
 .orElseThrow(()-> new GeneralException(NO_USER_BEHAVIOR_EXISTED));
 Product standardProduct = productRepository.findById(standardProductId).orElseThrow(()->new GeneralException(NO_RESULT));

 List<ProductSearchResponseDto.ProductPrevDto> products = getProductBasedRecommendation(standardProductId, 5);

 return UserBasedRecommendationResponseDto.builder()
 .standardProduct(ProductConverter.toSearchResultPrevDto(standardProduct))
 .message(message)
 .products(products)
 .build();
 }


 @Async
 public void requestAnalysisAsync(Long productId, List<String> imageUrls) {
Expand Down

3 changes: 3 additions & 0 deletions
src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,8 +6,11 @@
import com.DecodEat.domain.users.entity.UserBehavior;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {

 void deleteByUserAndProductAndBehavior(User user, Product product, Behavior behavior);


}

2 changes: 1 addition & 1 deletion
src/main/java/com/DecodEat/global/apiPayload/code/status/ErrorStatus.java

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -24,7 +24,7 @@ public enum ErrorStatus implements BaseErrorCode {

 // 추천
 NO_RECOMMENDATION_PRODUCT_BASED(HttpStatus.NOT_FOUND,"RECOMMENDATION_400","유사한 상품이 존재하지 않습니다."),

 NO_USER_BEHAVIOR_EXISTED(HttpStatus.NOT_FOUND,"RECOMMENDATION_401","유저의 해당 메타 데이터가 존재하지 않습니다."),
 // 기본 에러
 _BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_400", "잘못된 요청입니다."),
 _UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "COMMON_401", "인증이 필요합니다."),
Expand Down
Loading