스프링 부트 웹 애플리케이션 제작(67): 스터디 검색 기능 구현

본 포스팅은 백기선님의 스프링과 JPA 기반 웹 애플리케이션 개발 강의를 참고하여 작성하였습니다.
소스 코드는 여기 있습니다. (commit hash: f39b053)

> git clone https://github.com/lcalmsky/spring-boot-app.git
> git checkout f39b053

ℹ️ squash merge를 사용해 기존 branch를 삭제하기로 하여 앞으로는 commit hash로 포스팅 시점의 소스 코드를 공유할 예정입니다.

Overview

스터디 검색 기능을 구현합니다.

키워드를 입력 받아 스터디를 검색하는데, 스터디 제목, 관심사, 도시 이름이 키워드에 해당합니다.

로그인하지 않고도 사용할 수 있어야 합니다.

검색으로 보여질 내용은 아래와 같습니다.

• 검색 키워드, 결과 개수
• 스터디 정보
  • 이름
  • 짧은 소개
  • 태그
  • 지역
  • 멤버 수
  • 스터디 공개 일시

엔드포인트 추가

MainController에 검색 엔드포인트를 추가합니다.

/src/main/java/io/lcalmsky/app/modules/main/endpoint/controller/MainController.java

// 생략
@Controller
@RequiredArgsConstructor
public class MainController {
    private final StudyRepository studyRepository;
    // 생략
    @GetMapping("/search/study")
    public String searchStudy(String keyword, Model model) {
        List<Study> studyList = studyRepository.findByKeyword(keyword);
        model.addAttribute(studyList);
        model.addAttribute("keyword", keyword);
        return "search";
    }
}

StudyRepository에 전달받은 keyword로 조회한 결과를 모델에 담아 search 페이지로 이동시킵니다.

MainController.java 전체 보기

package io.lcalmsky.app.modules.main.endpoint.controller;

import io.lcalmsky.app.modules.account.domain.entity.Account;
import io.lcalmsky.app.modules.account.support.CurrentUser;
import io.lcalmsky.app.modules.study.domain.entity.Study;
import io.lcalmsky.app.modules.study.infra.repository.StudyRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;

import java.util.List;

@Controller
@RequiredArgsConstructor
public class MainController {

    private final StudyRepository studyRepository;

    @GetMapping("/")
    public String home(@CurrentUser Account account, Model model) {
        if (account != null) {
            model.addAttribute(account);
        }
        return "index";
    }

    @GetMapping("/login")
    public String login() {
        return "login";
    }

    @GetMapping("/search/study")
    public String searchStudy(String keyword, Model model) {
        List<Study> studyList = studyRepository.findByKeyword(keyword);
        model.addAttribute(studyList);
        model.addAttribute("keyword", keyword);
        return "search";
    }
}

Repository 추가 및 수정

키워드로 검색하는 기능은 querydsl을 이용해 구현해보겠습니다.

study 도메인 패키지 내에 StudyRepositoryExtension 인터페이스를 추가합니다.

/src/main/java/io/lcalmsky/app/modules/study/infra/repository/StudyRepositoryExtension.java

package io.lcalmsky.app.modules.study.infra.repository;

import io.lcalmsky.app.modules.study.domain.entity.Study;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Transactional(readOnly = true)
public interface StudyRepositoryExtension {
    List<Study> findByKeyword(String keyword);
}

MainController에서 검색을 위해 호출하는 메서드를 인터페이스에 추가하였습니다.

다음으로 StudyRepository가 StudyRepositoryExtension을 상속하게하면 MainController에서 StudyRepository.findByKeyword를 호출하는 부분의 컴파일 에러가 사라지게 됩니다.

/src/main/java/io/lcalmsky/app/modules/study/infra/repository/StudyRepository.java

// 생략
@Transactional(readOnly = true)
public interface StudyRepository extends JpaRepository<Study, Long>, StudyRepositoryExtension {
    // 생략
}

마지막으로 이 내용을 구현할 클래스를 생성합니다.

기존에 생성한 인터페이스에 Impl을 추가해서 생성해야만 스프링에서 자동으로 구현체를 찾아줍니다.

이 부분에 대해 자세히 알고싶으신 분들은 이 포스팅을 참고하시면 됩니다.

/src/main/java/io/lcalmsky/app/modules/study/infra/repository/StudyRepositoryExtensionImpl.java

package io.lcalmsky.app.modules.study.infra.repository;

import com.querydsl.jpa.JPQLQuery;
import io.lcalmsky.app.modules.study.domain.entity.QStudy;
import io.lcalmsky.app.modules.study.domain.entity.Study;
import org.springframework.data.jpa.repository.support.QuerydslRepositorySupport;

import java.util.List;

public class StudyRepositoryExtensionImpl extends QuerydslRepositorySupport implements StudyRepositoryExtension {

    public StudyRepositoryExtensionImpl() {
        super(Study.class);
    }

    @Override
    public List<Study> findByKeyword(String keyword) {
        QStudy study = QStudy.study;
        JPQLQuery<Study> query = from(study)
                .where(study.published.isTrue()
                        .and(study.title.containsIgnoreCase(keyword))
                        .or(study.tags.any().title.containsIgnoreCase(keyword))
                        .or(study.zones.any().localNameOfCity.containsIgnoreCase(keyword)));
        return query.fetch() ;
    }
}

QuerydslRepositorySupport를 상속하여 Entity 타입만 부모 객체에 전달하여 기본 설정을 완료하였습니다. (자세한 내용은 여기 참고)

querydsl을 이용해 쿼리를 생성한 뒤 조회하도록 하였습니다.

이 부분이 나중에 문제가 되는데요, 뷰를 구현한 이후에 확인해보도록 하겠습니다.

SecurityConfig 수정

검색 기능은 로그인하지 않아도 쓸 수 있게 하기 위해 SecurityConfig를 수정합니다.

// 생략
@Configuration
@EnableWebSecurity
@RequiredArgsConstructor
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    private final UserDetailsService userDetailsService;
    private final DataSource dataSource;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .mvcMatchers("/", "/login", "/sign-up", "/check-email-token",
                        "/email-login", "/check-email-login", "/login-link", "/login-by-email", 
                        "/search/study").permitAll() // /search/study 추가
                .mvcMatchers(HttpMethod.GET, "/profile/*").permitAll()
                .anyRequest().authenticated();
        http.formLogin()
                .loginPage("/login")
                .permitAll();
        http.logout()
                .logoutSuccessUrl("/");
        http.rememberMe()
                .userDetailsService(userDetailsService)
                .tokenRepository(tokenRepository());
    }
    // 생략
}

SecurityConfig.java 전체 보기

package io.lcalmsky.app.infra.config;

import lombok.RequiredArgsConstructor;
import org.springframework.boot.autoconfigure.security.servlet.PathRequest;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.web.authentication.rememberme.JdbcTokenRepositoryImpl;
import org.springframework.security.web.authentication.rememberme.PersistentTokenRepository;

import javax.sql.DataSource;

@Configuration
@EnableWebSecurity
@RequiredArgsConstructor
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    private final UserDetailsService userDetailsService;
    private final DataSource dataSource;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .mvcMatchers("/", "/login", "/sign-up", "/check-email-token",
                        "/email-login", "/check-email-login", "/login-link", "/login-by-email", "/search/study").permitAll()
                .mvcMatchers(HttpMethod.GET, "/profile/*").permitAll()
                .anyRequest().authenticated();
        http.formLogin()
                .loginPage("/login")
                .permitAll();
        http.logout()
                .logoutSuccessUrl("/");
        http.rememberMe()
                .userDetailsService(userDetailsService)
                .tokenRepository(tokenRepository());
    }

    @Bean
    public PersistentTokenRepository tokenRepository() {
        JdbcTokenRepositoryImpl jdbcTokenRepository = new JdbcTokenRepositoryImpl();
        jdbcTokenRepository.setDataSource(dataSource);
        return jdbcTokenRepository;
    }

    @Override
    public void configure(WebSecurity web) {
        web.ignoring()
                .requestMatchers(PathRequest.toStaticResources().atCommonLocations())
                .mvcMatchers("/node_modules/**");
    }
}

뷰 작성

search.html 파일을 생성하고 아래 코드를 작성합니다.

/src/main/resources/templates/search.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head th:replace="fragments.html::head"></head>
<body class="bg-light">
    <div th:replace="fragments.html::navigation-bar"></div>
    <div class="container">
        <div class="py-5 text-center">
            <p class="lead" th:if="${#lists.isEmpty(studyList)}">
                <strong th:text="${keyword}" id="keyword" class="context"></strong>에 해당하는 스터디가 없습니다.
            </p>
            <p class="lead" th:if="${!#lists.isEmpty(studyList)}">
                <strong th:text="${keyword}" id="keyword" class="context"></strong>에 해당하는 스터디를
                <span th:text="${studyList.size()}"></span>개 찾았습니다.
            </p>
        </div>
        <div class="row justify-content-center">
            <div class="col-sm-10">
                <div class="row">
                    <div class="col-md-4" th:each="study: ${studyList}">
                        <div class="card mb-4 shadow-sm">
                            <div class="card-body">
                                <a th:href="@{'/study/' + ${study.path}}" class="text-decoration-none">
                                    <h5 class="card-title context" th:text="${study.title}"></h5>
                                </a>
                                <p class="card-text" th:text="${study.shortDescription}">Short description</p>
                                <p class="card-text context">
                                    <span th:each="tag: ${study.tags}"
                                          class="font-weight-light font-monospace badge rounded-pill bg-success mr-3">
                                        <a th:href="@{'/search/study?keyword=' + ${tag.title}}"
                                           class="text-decoration-none text-white">
                                            <i class="fa fa-tag"></i> <span th:text="${tag.title}">Tag</span>
                                        </a>
                                    </span>
                                    <span th:each="zone: ${study.zones}"
                                          class="font-weight-light font-monospace badge rounded-pill bg-primary mr-3">
                                        <a th:href="@{'/search/study?keyword=' + ${zone.localNameOfCity}}"
                                           class="text-decoration-none text-white">
                                            <i class="fa fa-globe"></i> <span th:text="${zone.localNameOfCity}"
                                                                              class="text-white">City</span>
                                        </a>
                                    </span>
                                </p>
                                <div class="d-flex justify-content-between align-items-center">
                                    <small class="text-muted">
                                        <i class="fa fa-user-circle"></i>
                                        <span th:text="${study.members.size()}"></span>명
                                    </small>
                                    <small class="text-muted date" th:text="${study.publishedDateTime}">9 mins</small>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <div th:replace="fragments.html::footer"></div>
    <script th:replace="fragments.html::date-time"></script>
</body>
</html>

fragments.html에 tags, zones를 표현하는 부분에 오타 및 Bootstrap 5버전에 맞지 않는 class를 사용하는 부분이 있어 수정하였습니다.

• 버전 변경
  • 기존: font-weight-light text-monospace badge badge-pill badge-info me-3
  • 변경: font-weight-light font-monospace badge rounded-pill bg-success me-3
• url 변경
  • 기존: /search/tags/
  • 변경: /search/study?keyword=

수정한 부분 보기

<div class="row justify-content-center bg-light">
    <div class="col-10">
        <p>
            <span th:each="tag: ${study.tags}"
                  class="font-weight-light font-monospace badge rounded-pill bg-success me-3">
                <a th:href="@{'/search/study?keyword=' + ${tag.title}}" class="text-decoration-none text-white">
                    <i class="fa fa-tag"></i> <span th:text="${tag.title}">Tag</span>
                </a>
            </span>
            <span th:each="zone: ${study.zones}" class="font-weight-light font-monospace badge rounded-pill bg-primary me-3">
                <a th:href="@{'/search/study?keyword=' + ${zone.localNameOfCity}}" class="text-decoration-none text-white">
                    <i class="fa fa-globe"></i> <span th:text="${zone.localNameOfCity}">City</span>
                </a>
            </span>
        </p>
    </div>
</div>

테스트

애플리케이션 실행 후 검색창에 질의합니다.

주제는 jpa, spring, 지역은 서울특별시만 지정해서 스터디를 생성했으므로 몇 개 조회되지 않습니다.

제대로 된 테스트를 하려면 데이터를 직접 생성해서 추가하신뒤에 테스트하시면 됩니다.

저는 이후 다른 내용까지 추가한 뒤에 그렇게 진행할 예정입니다.

검색이 정상적으로 수행되는 것을 확인하였습니다.

태그나 지역을 클릭해도 바로 해당 내용으로 검색됩니다.

---

여기서 로그를 확인해보면 치명적인 결함을 찾을 수 있는데요, 바로 n+1 problem이 발생한다는 것입니다.

spring을 검색했을 때 로그

2022-06-15 00:34:02.981 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        study0_.id as id1_7_,
        study0_.closed as closed2_7_,
        study0_.closed_date_time as closed_d3_7_,
        study0_.full_description as full_des4_7_,
        study0_.image as image5_7_,
        study0_.path as path6_7_,
        study0_.published as publishe7_7_,
        study0_.published_date_time as publishe8_7_,
        study0_.recruiting as recruiti9_7_,
        study0_.recruiting_updated_date_time as recruit10_7_,
        study0_.short_description as short_d11_7_,
        study0_.title as title12_7_,
        study0_.use_banner as use_ban13_7_ 
    from
        study study0_ 
    where
        study0_.published=? 
        and (
            lower(study0_.title) like ? escape '!'
        ) 
        or exists (
            select
                1 
            from
                study_tags tags1_,
                tag tag2_ 
            where
                study0_.id=tags1_.study_id 
                and tags1_.tags_id=tag2_.id 
                and (
                    lower(tag2_.title) like ? escape '!'
                )
        ) 
        or exists (
            select
                1 
            from
                study_zones zones3_,
                zone zone4_ 
            where
                study0_.id=zones3_.study_id 
                and zones3_.zones_id=zone4_.id 
                and (
                    lower(zone4_.local_name_of_city) like ? escape '!'
                )
        )
2022-06-15 00:34:02.982 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BOOLEAN] - [true]
2022-06-15 00:34:02.982 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [2] as [VARCHAR] - [%spring%]
2022-06-15 00:34:02.982 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [3] as [VARCHAR] - [%spring%]
2022-06-15 00:34:02.982 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [4] as [VARCHAR] - [%spring%]
2022-06-15 00:34:03.010 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        count(notificati0_.id) as col_0_0_ 
    from
        notification notificati0_ 
    where
        notificati0_.account_account_id=? 
        and notificati0_.checked=?
2022-06-15 00:34:03.010 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [86]
2022-06-15 00:34:03.010 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [2] as [BOOLEAN] - [false]
2022-06-15 00:34:03.019 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        tags0_.study_id as study_id1_10_0_,
        tags0_.tags_id as tags_id2_10_0_,
        tag1_.id as id1_12_1_,
        tag1_.title as title2_12_1_ 
    from
        study_tags tags0_ 
    inner join
        tag tag1_ 
            on tags0_.tags_id=tag1_.id 
    where
        tags0_.study_id=?
2022-06-15 00:34:03.019 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [87]
2022-06-15 00:34:03.020 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        zones0_.study_id as study_id1_11_0_,
        zones0_.zones_id as zones_id2_11_0_,
        zone1_.id as id1_13_1_,
        zone1_.city as city2_13_1_,
        zone1_.local_name_of_city as local_na3_13_1_,
        zone1_.province as province4_13_1_ 
    from
        study_zones zones0_ 
    inner join
        zone zone1_ 
            on zones0_.zones_id=zone1_.id 
    where
        zones0_.study_id=?
2022-06-15 00:34:03.020 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [87]
2022-06-15 00:34:03.021 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        members0_.study_id as study_id1_9_0_,
        members0_.members_account_id as members_2_9_0_,
        account1_.account_id as account_1_0_1_,
        account1_.created_date as created_2_0_1_,
        account1_.last_modified_date as last_mod3_0_1_,
        account1_.email as email4_0_1_,
        account1_.email_token as email_to5_0_1_,
        account1_.email_token_generated_at as email_to6_0_1_,
        account1_.is_valid as is_valid7_0_1_,
        account1_.joined_at as joined_a8_0_1_,
        account1_.nickname as nickname9_0_1_,
        account1_.study_created_by_email as study_c10_0_1_,
        account1_.study_created_by_web as study_c11_0_1_,
        account1_.study_registration_result_by_email as study_r12_0_1_,
        account1_.study_registration_result_by_web as study_r13_0_1_,
        account1_.study_updated_by_email as study_u14_0_1_,
        account1_.study_updated_by_web as study_u15_0_1_,
        account1_.password as passwor16_0_1_,
        account1_.bio as bio17_0_1_,
        account1_.company as company18_0_1_,
        account1_.image as image19_0_1_,
        account1_.job as job20_0_1_,
        account1_.location as locatio21_0_1_,
        account1_.url as url22_0_1_ 
    from
        study_members members0_ 
    inner join
        account account1_ 
            on members0_.members_account_id=account1_.account_id 
    where
        members0_.study_id=?
2022-06-15 00:34:03.021 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [87]
2022-06-15 00:34:03.021 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        tags0_.study_id as study_id1_10_0_,
        tags0_.tags_id as tags_id2_10_0_,
        tag1_.id as id1_12_1_,
        tag1_.title as title2_12_1_ 
    from
        study_tags tags0_ 
    inner join
        tag tag1_ 
            on tags0_.tags_id=tag1_.id 
    where
        tags0_.study_id=?
2022-06-15 00:34:03.021 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [101]
2022-06-15 00:34:03.022 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        zones0_.study_id as study_id1_11_0_,
        zones0_.zones_id as zones_id2_11_0_,
        zone1_.id as id1_13_1_,
        zone1_.city as city2_13_1_,
        zone1_.local_name_of_city as local_na3_13_1_,
        zone1_.province as province4_13_1_ 
    from
        study_zones zones0_ 
    inner join
        zone zone1_ 
            on zones0_.zones_id=zone1_.id 
    where
        zones0_.study_id=?
2022-06-15 00:34:03.022 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [101]
2022-06-15 00:34:03.022 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        members0_.study_id as study_id1_9_0_,
        members0_.members_account_id as members_2_9_0_,
        account1_.account_id as account_1_0_1_,
        account1_.created_date as created_2_0_1_,
        account1_.last_modified_date as last_mod3_0_1_,
        account1_.email as email4_0_1_,
        account1_.email_token as email_to5_0_1_,
        account1_.email_token_generated_at as email_to6_0_1_,
        account1_.is_valid as is_valid7_0_1_,
        account1_.joined_at as joined_a8_0_1_,
        account1_.nickname as nickname9_0_1_,
        account1_.study_created_by_email as study_c10_0_1_,
        account1_.study_created_by_web as study_c11_0_1_,
        account1_.study_registration_result_by_email as study_r12_0_1_,
        account1_.study_registration_result_by_web as study_r13_0_1_,
        account1_.study_updated_by_email as study_u14_0_1_,
        account1_.study_updated_by_web as study_u15_0_1_,
        account1_.password as passwor16_0_1_,
        account1_.bio as bio17_0_1_,
        account1_.company as company18_0_1_,
        account1_.image as image19_0_1_,
        account1_.job as job20_0_1_,
        account1_.location as locatio21_0_1_,
        account1_.url as url22_0_1_ 
    from
        study_members members0_ 
    inner join
        account account1_ 
            on members0_.members_account_id=account1_.account_id 
    where
        members0_.study_id=?
2022-06-15 00:34:03.022 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [101]
2022-06-15 00:34:03.023 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        tags0_.study_id as study_id1_10_0_,
        tags0_.tags_id as tags_id2_10_0_,
        tag1_.id as id1_12_1_,
        tag1_.title as title2_12_1_ 
    from
        study_tags tags0_ 
    inner join
        tag tag1_ 
            on tags0_.tags_id=tag1_.id 
    where
        tags0_.study_id=?
2022-06-15 00:34:03.023 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [103]
2022-06-15 00:34:03.023 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        zones0_.study_id as study_id1_11_0_,
        zones0_.zones_id as zones_id2_11_0_,
        zone1_.id as id1_13_1_,
        zone1_.city as city2_13_1_,
        zone1_.local_name_of_city as local_na3_13_1_,
        zone1_.province as province4_13_1_ 
    from
        study_zones zones0_ 
    inner join
        zone zone1_ 
            on zones0_.zones_id=zone1_.id 
    where
        zones0_.study_id=?
2022-06-15 00:34:03.023 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [103]
2022-06-15 00:34:03.024 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        members0_.study_id as study_id1_9_0_,
        members0_.members_account_id as members_2_9_0_,
        account1_.account_id as account_1_0_1_,
        account1_.created_date as created_2_0_1_,
        account1_.last_modified_date as last_mod3_0_1_,
        account1_.email as email4_0_1_,
        account1_.email_token as email_to5_0_1_,
        account1_.email_token_generated_at as email_to6_0_1_,
        account1_.is_valid as is_valid7_0_1_,
        account1_.joined_at as joined_a8_0_1_,
        account1_.nickname as nickname9_0_1_,
        account1_.study_created_by_email as study_c10_0_1_,
        account1_.study_created_by_web as study_c11_0_1_,
        account1_.study_registration_result_by_email as study_r12_0_1_,
        account1_.study_registration_result_by_web as study_r13_0_1_,
        account1_.study_updated_by_email as study_u14_0_1_,
        account1_.study_updated_by_web as study_u15_0_1_,
        account1_.password as passwor16_0_1_,
        account1_.bio as bio17_0_1_,
        account1_.company as company18_0_1_,
        account1_.image as image19_0_1_,
        account1_.job as job20_0_1_,
        account1_.location as locatio21_0_1_,
        account1_.url as url22_0_1_ 
    from
        study_members members0_ 
    inner join
        account account1_ 
            on members0_.members_account_id=account1_.account_id 
    where
        members0_.study_id=?
2022-06-15 00:34:03.024 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [103]
2022-06-15 00:34:03.024 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        tags0_.study_id as study_id1_10_0_,
        tags0_.tags_id as tags_id2_10_0_,
        tag1_.id as id1_12_1_,
        tag1_.title as title2_12_1_ 
    from
        study_tags tags0_ 
    inner join
        tag tag1_ 
            on tags0_.tags_id=tag1_.id 
    where
        tags0_.study_id=?
2022-06-15 00:34:03.024 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [105]
2022-06-15 00:34:03.025 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        zones0_.study_id as study_id1_11_0_,
        zones0_.zones_id as zones_id2_11_0_,
        zone1_.id as id1_13_1_,
        zone1_.city as city2_13_1_,
        zone1_.local_name_of_city as local_na3_13_1_,
        zone1_.province as province4_13_1_ 
    from
        study_zones zones0_ 
    inner join
        zone zone1_ 
            on zones0_.zones_id=zone1_.id 
    where
        zones0_.study_id=?
2022-06-15 00:34:03.025 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [105]
2022-06-15 00:34:03.025 DEBUG 23280 --- [nio-8080-exec-9] org.hibernate.SQL                        : 
    select
        members0_.study_id as study_id1_9_0_,
        members0_.members_account_id as members_2_9_0_,
        account1_.account_id as account_1_0_1_,
        account1_.created_date as created_2_0_1_,
        account1_.last_modified_date as last_mod3_0_1_,
        account1_.email as email4_0_1_,
        account1_.email_token as email_to5_0_1_,
        account1_.email_token_generated_at as email_to6_0_1_,
        account1_.is_valid as is_valid7_0_1_,
        account1_.joined_at as joined_a8_0_1_,
        account1_.nickname as nickname9_0_1_,
        account1_.study_created_by_email as study_c10_0_1_,
        account1_.study_created_by_web as study_c11_0_1_,
        account1_.study_registration_result_by_email as study_r12_0_1_,
        account1_.study_registration_result_by_web as study_r13_0_1_,
        account1_.study_updated_by_email as study_u14_0_1_,
        account1_.study_updated_by_web as study_u15_0_1_,
        account1_.password as passwor16_0_1_,
        account1_.bio as bio17_0_1_,
        account1_.company as company18_0_1_,
        account1_.image as image19_0_1_,
        account1_.job as job20_0_1_,
        account1_.location as locatio21_0_1_,
        account1_.url as url22_0_1_ 
    from
        study_members members0_ 
    inner join
        account account1_ 
            on members0_.members_account_id=account1_.account_id 
    where
        members0_.study_id=?
2022-06-15 00:34:03.025 TRACE 23280 --- [nio-8080-exec-9] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [105]

그 이유는 뷰에서 study.tags, study.zones, study.members를 각각 호출하고 있기 때문인데요, querydsl을 이용해서 쿼리할 때 한번에 조회할 수 있도록 수정이 필요합니다.

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