[feat] FAQ 검색기능 추가

build.gradle

@@ -42,6 +42,12 @@ dependencies {
 	implementation 'io.jsonwebtoken:jjwt-api:0.11.5'
 	runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.5'
 	runtimeOnly('io.jsonwebtoken:jjwt-jackson:0.11.5') // jackson으로 jwt 파싱
+
+	// querydsl 관련
+	implementation 'com.querydsl:querydsl-jpa:5.0.0:jakarta'
+	annotationProcessor "com.querydsl:querydsl-apt:${dependencyManagement.importedProperties['querydsl.version']}:jakarta"
+	annotationProcessor "jakarta.annotation:jakarta.annotation-api"
+	annotationProcessor "jakarta.persistence:jakarta.persistence-api"
 }
 
 tasks.named('test') {

src/main/java/com/bbteam/budgetbuddies/apiPayload/code/status/ErrorStatus.java

@@ -27,7 +27,9 @@ public enum ErrorStatus implements BaseErrorCode {
 
     _OTP_NOT_VALID(HttpStatus.BAD_REQUEST, "OTP4001", "인증번호가 유효하지 않습니다."),
     _PHONE_NUMBER_NOT_VALID(HttpStatus.BAD_REQUEST, "AUTH4001", "전화번호 형식이 유효하지 않습니다. (예: 01012341234)"),
-    _FAQ_NOT_FOUND(HttpStatus.NOT_FOUND, "FAQ4004", "해당 FAQ가 존재하지 않습니다.");
+    _FAQ_NOT_FOUND(HttpStatus.NOT_FOUND, "FAQ4004", "해당 FAQ가 존재하지 않습니다."),
+    _SEARCH_KEYWORD_NOT_FOUND(HttpStatus.NOT_FOUND, "SEARCH_KEYWORD4004", "해당 SearchKeyword가 존재하지 않습니다."),
+    _FAQ_KEYWORD_NOT_FOUND(HttpStatus.NOT_FOUND, "FAQ_KEYWORD4004", "해당 FaqKeyword가 존재하지 않습니다.");
 
 
     private HttpStatus httpStatus;

src/main/java/com/bbteam/budgetbuddies/domain/faq/controller/FaqApi.java

@@ -17,6 +17,7 @@
 import jakarta.validation.Valid;
 import org.springframework.data.domain.Pageable;
 import org.springframework.http.MediaType;
+import org.springframework.lang.Nullable;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestParam;
 
@@ -70,7 +71,7 @@ ApiResponse<?> postFaq(@ExistUser @RequestParam Long userId,
 
     }
     )
-    ApiResponse<?> findByPaging(Pageable pageable);
+    ApiResponse<?> findByPaging(Pageable pageable, String SearchCondition);
 
     @Operation(summary = "[User] FAQ 수정 API", description = "FAQ를 수정하는 API입니다.",
             requestBody = @RequestBody(
@@ -112,4 +113,9 @@ ApiResponse<?> modifyFaq(@PathVariable @ExistFaq Long faqId,
     }
     )
     ApiResponse<?> deleteFaq(@ExistFaq Long faqId);
+
+    ApiResponse<?> addKeyword(@ExistFaq Long faqId, Long searchKeywordId);
+
+    ApiResponse<?> deleteKeyword(@ExistFaq Long faqId, Long searchKeywordId);
+
 }

src/main/java/com/bbteam/budgetbuddies/domain/faq/controller/FaqController.java

@@ -7,10 +7,12 @@
 import com.bbteam.budgetbuddies.domain.faq.validation.ExistFaq;
 import com.bbteam.budgetbuddies.domain.user.validation.ExistUser;
 import jakarta.validation.Valid;
+import jakarta.validation.constraints.Null;
 import lombok.RequiredArgsConstructor;
 import org.springdoc.core.annotations.ParameterObject;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
+import org.springframework.lang.Nullable;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -37,8 +39,9 @@ public ApiResponse<FaqResponseDto.FaqFindResponse> findFaq(@PathVariable @ExistF
 
     @Override
     @GetMapping("/all")
-    public ApiResponse<Page<FaqResponseDto.FaqFindResponse>> findByPaging(@ParameterObject Pageable pageable) {
-        return ApiResponse.onSuccess(faqService.findAllWithPaging(pageable));
+    public ApiResponse<Page<FaqResponseDto.FaqFindResponse>> findByPaging(@ParameterObject Pageable pageable,
+                                                                          @RequestParam @Nullable String searchCondition) {
+        return ApiResponse.onSuccess(faqService.searchFaq(pageable, searchCondition));
     }
 
     @Override
@@ -54,4 +57,16 @@ public ApiResponse<String> deleteFaq(@PathVariable @ExistFaq Long faqId) {
         faqService.deleteFaq(faqId);
         return ApiResponse.onSuccess("Delete Success");
     }
+
+    @Override
+    @PostMapping("/{faqId}/keyword")
+    public ApiResponse<?> addKeyword(@PathVariable @ExistFaq Long faqId, @RequestParam Long searchKeywordId) {
+        return ApiResponse.onSuccess(faqService.addKeyword(faqId, searchKeywordId));
+    }
+
+    @Override
+    @DeleteMapping("/{faqId}/keyword")
+    public ApiResponse<?> deleteKeyword(@PathVariable @ExistFaq Long faqId, @RequestParam Long searchKeywordId) {
+        return ApiResponse.onSuccess(faqService.removeKeyword(faqId, searchKeywordId));
+    }
 }

src/main/java/com/bbteam/budgetbuddies/domain/faq/repository/FaqRepository.java

@@ -3,7 +3,7 @@
 import com.bbteam.budgetbuddies.domain.faq.entity.Faq;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface FaqRepository extends JpaRepository<Faq, Long> {
+public interface FaqRepository extends JpaRepository<Faq, Long>, FaqSearchRepository {
 
 
 }

src/main/java/com/bbteam/budgetbuddies/domain/faq/repository/FaqSearchRepository.java

@@ -0,0 +1,10 @@
+package com.bbteam.budgetbuddies.domain.faq.repository;
+
+import com.bbteam.budgetbuddies.domain.faq.entity.Faq;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface FaqSearchRepository {
+
+    Page<Faq> searchFaq(Pageable pageable, String searchCondition);
+}

src/main/java/com/bbteam/budgetbuddies/domain/faq/repository/FaqSearchRepositoryImpl.java

@@ -0,0 +1,61 @@
+package com.bbteam.budgetbuddies.domain.faq.repository;
+
+import com.bbteam.budgetbuddies.domain.faq.entity.Faq;
+import com.bbteam.budgetbuddies.domain.searchkeyword.domain.QSearchKeyword;
+import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.jpa.JPAExpressions;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import jakarta.persistence.EntityManager;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageImpl;
+import org.springframework.data.domain.Pageable;
+
+import java.util.List;
+
+import static com.bbteam.budgetbuddies.domain.faq.entity.QFaq.*;
+import static com.bbteam.budgetbuddies.domain.faqkeyword.domain.QFaqKeyword.*;
+import static com.bbteam.budgetbuddies.domain.searchkeyword.domain.QSearchKeyword.*;
+
+public class FaqSearchRepositoryImpl implements FaqSearchRepository{
+
+    private final JPAQueryFactory queryFactory;
+
+    public FaqSearchRepositoryImpl(EntityManager em) {
+        this.queryFactory = new JPAQueryFactory(em);
+    }
+
+    @Override
+    public Page<Faq> searchFaq(Pageable pageable, String searchCondition) {
+        List<Faq> result = queryFactory.select(faq)
+                .from(faq)
+                .where(faq.id.in(
+                        JPAExpressions
+                                .select(faqKeyword.faq.id)
+                                .from(faqKeyword)
+                                .join(searchKeyword).on(keywordMatch(searchCondition))
+                ))
+                .offset(pageable.getOffset())
+                .limit(pageable.getPageSize())
+                .fetch();
+
+        Long total = queryFactory.select(faq.count())
+                .from(faq)
+                .where(faq.id.in(
+                        JPAExpressions
+                                .select(faqKeyword.faq.id)
+                                .from(faqKeyword)
+                                .join(searchKeyword).on(keywordMatch(searchCondition))
+                ))
+                .fetchOne();
+
+        return new PageImpl<>(result, pageable, total);
+
+    }
+
+    private BooleanExpression keywordMatch(String searchCondition) {
+        return searchCondition != null ? searchKeyword.keyword.contains(searchCondition) : null;
+    }
+
+}
+

src/main/java/com/bbteam/budgetbuddies/domain/faq/service/FaqService.java

@@ -2,6 +2,7 @@
 
 import com.bbteam.budgetbuddies.domain.faq.dto.FaqRequestDto;
 import com.bbteam.budgetbuddies.domain.faq.dto.FaqResponseDto;
+import com.bbteam.budgetbuddies.domain.faqkeyword.dto.FaqKeywordResponseDto;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 
@@ -11,9 +12,15 @@ public interface FaqService {
 
     Page<FaqResponseDto.FaqFindResponse> findAllWithPaging(Pageable pageable);
 
+    Page<FaqResponseDto.FaqFindResponse> searchFaq(Pageable pageable, String searchCondition);
+
     FaqResponseDto.FaqPostResponse postFaq(FaqRequestDto.FaqPostRequest dto, Long userId);
 
     FaqResponseDto.FaqModifyResponse modifyFaq(FaqRequestDto.FaqModifyRequest dto, Long faqId);
 
     String deleteFaq(Long faqId);
+
+    FaqKeywordResponseDto addKeyword(Long faqId, Long searchKeywordId);
+
+    String removeKeyword(Long faqId, Long searchKeywordId);
 }

src/main/java/com/bbteam/budgetbuddies/domain/faq/service/FaqServiceImpl.java

@@ -7,6 +7,11 @@
 import com.bbteam.budgetbuddies.domain.faq.dto.FaqResponseDto;
 import com.bbteam.budgetbuddies.domain.faq.entity.Faq;
 import com.bbteam.budgetbuddies.domain.faq.repository.FaqRepository;
+import com.bbteam.budgetbuddies.domain.faqkeyword.domain.FaqKeyword;
+import com.bbteam.budgetbuddies.domain.faqkeyword.dto.FaqKeywordResponseDto;
+import com.bbteam.budgetbuddies.domain.faqkeyword.repository.FaqKeywordRepository;
+import com.bbteam.budgetbuddies.domain.searchkeyword.domain.SearchKeyword;
+import com.bbteam.budgetbuddies.domain.searchkeyword.repository.SearchKeywordRepository;
 import com.bbteam.budgetbuddies.domain.user.entity.User;
 import com.bbteam.budgetbuddies.domain.user.repository.UserRepository;
 import lombok.RequiredArgsConstructor;
@@ -22,6 +27,8 @@ public class FaqServiceImpl implements FaqService{
 
     private final FaqRepository faqRepository;
     private final UserRepository userRepository;
+    private final FaqKeywordRepository faqKeywordRepository;
+    private final SearchKeywordRepository searchKeywordRepository;
 
     @Override
     public FaqResponseDto.FaqFindResponse findOneFaq(Long faqId) {
@@ -62,4 +69,36 @@ public String deleteFaq(Long faqId) {
     private Faq findFaq(Long faqId) {
         return faqRepository.findById(faqId).orElseThrow(() -> new GeneralException(ErrorStatus._FAQ_NOT_FOUND));
     }
+
+    @Override
+    public Page<FaqResponseDto.FaqFindResponse> searchFaq(Pageable pageable, String searchCondition) {
+        return faqRepository.searchFaq(pageable, searchCondition).map(FaqConverter::entityToFind);
+    }
+
+    @Override
+    @Transactional
+    public FaqKeywordResponseDto addKeyword(Long faqId, Long searchKeywordId) {
+        Faq faq = findFaq(faqId);
+        SearchKeyword searchKeyword = searchKeywordRepository.findById(searchKeywordId).orElseThrow(() -> new GeneralException(ErrorStatus._SEARCH_KEYWORD_NOT_FOUND));
+
+        FaqKeyword faqKeyword = FaqKeyword.builder()
+                .searchKeyword(searchKeyword)
+                .faq(faq)
+                .build();
+
+        faqKeywordRepository.save(faqKeyword);
+        return FaqKeywordResponseDto.toDto(faqKeyword);
+    }
+
+    @Override
+    @Transactional
+    public String removeKeyword(Long faqId, Long searchKeywordId) {
+        Faq faq = findFaq(faqId);
+        SearchKeyword searchKeyword = searchKeywordRepository.findById(searchKeywordId).orElseThrow(() -> new GeneralException(ErrorStatus._SEARCH_KEYWORD_NOT_FOUND));
+
+        FaqKeyword faqKeyword = faqKeywordRepository.findByFaqAndSearchKeyword(faq, searchKeyword).orElseThrow(() -> new GeneralException(ErrorStatus._FAQ_KEYWORD_NOT_FOUND));
+        faqKeywordRepository.delete(faqKeyword);
+
+        return "ok";
+    }
 }

src/main/java/com/bbteam/budgetbuddies/domain/faqkeyword/domain/FaqKeyword.java

@@ -0,0 +1,32 @@
+package com.bbteam.budgetbuddies.domain.faqkeyword.domain;
+
+import com.bbteam.budgetbuddies.common.BaseEntity;
+import com.bbteam.budgetbuddies.domain.faq.entity.Faq;
+import com.bbteam.budgetbuddies.domain.searchkeyword.domain.SearchKeyword;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.*;
+import lombok.experimental.SuperBuilder;
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+@SuperBuilder
+public class FaqKeyword extends BaseEntity {
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "faq_id")
+    @NotFound(action = NotFoundAction.IGNORE)
+    private Faq faq;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "search_keyword_id")
+    @NotFound(action = NotFoundAction.IGNORE)
+    private SearchKeyword searchKeyword;
+
+}

src/main/java/com/bbteam/budgetbuddies/domain/faqkeyword/dto/FaqKeywordResponseDto.java

@@ -0,0 +1,21 @@
+package com.bbteam.budgetbuddies.domain.faqkeyword.dto;
+
+import com.bbteam.budgetbuddies.domain.faqkeyword.domain.FaqKeyword;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class FaqKeywordResponseDto {
+
+    private Long faqId;
+    private Long searchKeywordId;
+
+    private String faqTitle;
+    private String keyword;
+
+    public static FaqKeywordResponseDto toDto(FaqKeyword faqKeyword) {
+        return new FaqKeywordResponseDto(faqKeyword.getFaq().getId(), faqKeyword.getSearchKeyword().getId(),
+                faqKeyword.getFaq().getTitle(), faqKeyword.getSearchKeyword().getKeyword());
+    }
+}

src/main/java/com/bbteam/budgetbuddies/domain/faqkeyword/repository/FaqKeywordRepository.java

@@ -0,0 +1,12 @@
+package com.bbteam.budgetbuddies.domain.faqkeyword.repository;
+
+import com.bbteam.budgetbuddies.domain.faq.entity.Faq;
+import com.bbteam.budgetbuddies.domain.faqkeyword.domain.FaqKeyword;
+import com.bbteam.budgetbuddies.domain.searchkeyword.domain.SearchKeyword;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface FaqKeywordRepository extends JpaRepository<FaqKeyword, Long> {
+    Optional<FaqKeyword> findByFaqAndSearchKeyword(Faq faq, SearchKeyword searchKeyword);
+}

src/main/java/com/bbteam/budgetbuddies/domain/searchkeyword/controller/SearchKeywordController.java

@@ -0,0 +1,48 @@
+package com.bbteam.budgetbuddies.domain.searchkeyword.controller;
+
+import com.bbteam.budgetbuddies.apiPayload.ApiResponse;
+import com.bbteam.budgetbuddies.domain.searchkeyword.domain.SearchKeyword;
+import com.bbteam.budgetbuddies.domain.searchkeyword.service.SearchKeywordService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/search-keyword")
+public class SearchKeywordController {
+
+    private final SearchKeywordService searchKeywordService;
+
+    @PostMapping("")
+    public ApiResponse<SearchKeyword> saveKeyword(String keyword) {
+
+        return ApiResponse.onSuccess(searchKeywordService.saveKeyword(keyword));
+    }
+
+    @GetMapping("")
+    public ApiResponse<SearchKeyword> findOne(Long searchKeywordId) {
+        return ApiResponse.onSuccess(searchKeywordService.findOne(searchKeywordId));
+    }
+
+    @GetMapping("/all")
+    public ApiResponse<Page<SearchKeyword>> findAll(Pageable pageable) {
+        return ApiResponse.onSuccess(searchKeywordService.findAll(pageable));
+    }
+
+    @PutMapping("")
+    public ApiResponse<SearchKeyword> modifyOne(Long searchKeywordId, String newKeyword) {
+        return ApiResponse.onSuccess((searchKeywordService.modifyOne(searchKeywordId, newKeyword)));
+    }
+
+    @DeleteMapping("")
+    public ApiResponse<String> deleteOne(Long searchKeywordId) {
+        searchKeywordService.deleteOne(searchKeywordId);
+        return ApiResponse.onSuccess("OK");
+    }
+
+
+
+
+}

src/main/java/com/bbteam/budgetbuddies/domain/searchkeyword/domain/SearchKeyword.java

@@ -0,0 +1,23 @@
+package com.bbteam.budgetbuddies.domain.searchkeyword.domain;
+
+import com.bbteam.budgetbuddies.common.BaseEntity;
+import jakarta.persistence.Entity;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class SearchKeyword extends BaseEntity {
+
+    private String keyword;
+
+    public void changeKeyword(String newKeyword) {
+        this.keyword = newKeyword;
+    }
+
+}