feat: 어드민 멤버 조회하기 API 구현

src/main/java/com/gdschongik/gdsc/domain/member/api/AdminMemberController.java

@@ -0,0 +1,27 @@
+package com.gdschongik.gdsc.domain.member.api;
+
+import com.gdschongik.gdsc.domain.member.application.MemberService;
+import com.gdschongik.gdsc.domain.member.dto.request.MemberQueryRequest;
+import com.gdschongik.gdsc.domain.member.dto.response.AdminMemberFindAllResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/admin/members")
+@RequiredArgsConstructor
+public class AdminMemberController {
+
+    private final MemberService memberService;
+
+    @GetMapping
+    public ResponseEntity<Page<AdminMemberFindAllResponse>> getMembers(
+            MemberQueryRequest queryRequest, Pageable pageable) {
+        Page<AdminMemberFindAllResponse> response = memberService.findAll(queryRequest, pageable);
+        return ResponseEntity.ok().body(response);
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/member/application/MemberService.java

@@ -0,0 +1,24 @@
+package com.gdschongik.gdsc.domain.member.application;
+
+import com.gdschongik.gdsc.domain.member.dao.MemberRepository;
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.member.dto.request.MemberQueryRequest;
+import com.gdschongik.gdsc.domain.member.dto.response.AdminMemberFindAllResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class MemberService {
+
+    private final MemberRepository memberRepository;
+
+    @Transactional(readOnly = true)
+    public Page<AdminMemberFindAllResponse> findAll(MemberQueryRequest queryRequest, Pageable pageable) {
+        Page<Member> members = memberRepository.findAll(queryRequest, pageable);
+        return members.map(AdminMemberFindAllResponse::of);
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/member/dao/MemberCustomRepository.java

@@ -0,0 +1,10 @@
+package com.gdschongik.gdsc.domain.member.dao;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.member.dto.request.MemberQueryRequest;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface MemberCustomRepository {
+    Page<Member> findAll(MemberQueryRequest queryRequest, Pageable pageable);
+}

src/main/java/com/gdschongik/gdsc/domain/member/dao/MemberCustomRepositoryImpl.java

@@ -0,0 +1,77 @@
+package com.gdschongik.gdsc.domain.member.dao;
+
+import static com.gdschongik.gdsc.domain.member.domain.QMember.*;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.member.dto.request.MemberQueryRequest;
+import com.querydsl.core.BooleanBuilder;
+import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.jpa.impl.JPAQuery;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.support.PageableExecutionUtils;
+
+@RequiredArgsConstructor
+public class MemberCustomRepositoryImpl implements MemberCustomRepository {
+
+    private final JPAQueryFactory queryFactory;
+
+    @Override
+    public Page<Member> findAll(MemberQueryRequest queryRequest, Pageable pageable) {
+        List<Member> fetch = queryFactory
+                .selectFrom(member)
+                .where(queryOption(queryRequest))
+                .offset(pageable.getOffset())
+                .limit(pageable.getPageSize())
+                .fetch();
+
+        JPAQuery<Long> countQuery =
+                queryFactory.select(member.count()).from(member).where(queryOption(queryRequest));
+
+        return PageableExecutionUtils.getPage(fetch, pageable, countQuery::fetchOne);
+    }
+
+    private BooleanBuilder queryOption(MemberQueryRequest queryRequest) {
+        BooleanBuilder booleanBuilder = new BooleanBuilder();
+
+        return booleanBuilder
+                .and(eqStudentId(queryRequest.studentId()))
+                .and(eqName(queryRequest.name()))
+                .and(eqPhone(queryRequest.phone()))
+                .and(eqDepartment(queryRequest.department()))
+                .and(eqEmail(queryRequest.email()))
+                .and(eqDiscordUsername(queryRequest.discordUsername()))
+                .and(eqDiscordNickname(queryRequest.discordNickname()));
+    }
+
+    private BooleanExpression eqStudentId(String studentId) {
+        return studentId != null ? member.studentId.containsIgnoreCase(studentId) : null;
+    }
+
+    private BooleanExpression eqName(String name) {
+        return name != null ? member.name.containsIgnoreCase(name) : null;
+    }
+
+    private BooleanExpression eqPhone(String phone) {
+        return phone != null ? member.phone.containsIgnoreCase(phone) : null;
+    }
+
+    private BooleanExpression eqDepartment(String department) {
+        return department != null ? member.department.containsIgnoreCase(department) : null;
+    }
+
+    private BooleanExpression eqEmail(String email) {
+        return email != null ? member.email.containsIgnoreCase(email) : null;
+    }
+
+    private BooleanExpression eqDiscordUsername(String discordUsername) {
+        return discordUsername != null ? member.discordUsername.containsIgnoreCase(discordUsername) : null;
+    }
+
+    private BooleanExpression eqDiscordNickname(String discordNickname) {
+        return discordNickname != null ? member.nickname.containsIgnoreCase(discordNickname) : null;
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/member/dao/MemberRepository.java

@@ -4,7 +4,7 @@
 import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface MemberRepository extends JpaRepository<Member, Long> {
+public interface MemberRepository extends JpaRepository<Member, Long>, MemberCustomRepository {
 
     Optional<Member> findByOauthId(String oauthId);
 }

src/main/java/com/gdschongik/gdsc/domain/member/dto/request/MemberQueryRequest.java

@@ -0,0 +1,10 @@
+package com.gdschongik.gdsc.domain.member.dto.request;
+
+public record MemberQueryRequest(
+        String studentId,
+        String name,
+        String phone,
+        String department,
+        String email,
+        String discordUsername,
+        String discordNickname) {}

src/main/java/com/gdschongik/gdsc/domain/member/dto/response/AdminMemberFindAllResponse.java

@@ -0,0 +1,26 @@
+package com.gdschongik.gdsc.domain.member.dto.response;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+
+public record AdminMemberFindAllResponse(
+        Long memberId,
+        String studentId,
+        String name,
+        String phone,
+        String department,
+        String email,
+        String discordUsername,
+        String nickname) {
+
+    public static AdminMemberFindAllResponse of(Member member) {
+        return new AdminMemberFindAllResponse(
+                member.getId(),
+                member.getStudentId(),
+                member.getName(),
+                member.getPhone(),
+                member.getDepartment(),
+                member.getEmail(),
+                member.getDiscordUsername(),
+                member.getNickname());
+    }
+}

src/main/java/com/gdschongik/gdsc/global/exception/ErrorCode.java

@@ -11,7 +11,10 @@ public enum ErrorCode {
 
     // Jwt
     INVALID_JWT_TOKEN(HttpStatus.UNAUTHORIZED, "유효하지 않은 JWT 토큰입니다."),
-    EXPIRED_JWT_TOKEN(HttpStatus.UNAUTHORIZED, "만료된 JWT 토큰입니다.");
+    EXPIRED_JWT_TOKEN(HttpStatus.UNAUTHORIZED, "만료된 JWT 토큰입니다."),
+
+    // Parameter
+    INVALID_QUERY_PARAMETER(HttpStatus.BAD_REQUEST, "잘못된 쿼리 파라미터입니다.");
 
     private final HttpStatus status;
     private final String message;