Controller에 기재된대로 api의 request / response 형식을 지켜주세요.

(DB는 예시로 제공될 뿐 원하는 형태로 구성하는 것을 권장드립니다.)

import java.util.*;
import java.util.stream.Collectors;

@RestController
public class DocumentVersionController {

    @Autowired
    private DocumentVersionRepository documentVersionRepository;

	/**
     * 문서 버전 목록 가져오기
     */
    @PostMapping("/getDocumentVersionList")
    public ResponseEntity<String> getDocumentVersionList(@RequestBody Map<String, Object> request) throws JsonProcessingException {
        String id = (String) request.get("id");
        
		List<DocumentVersion> documentVersionList = documentVersionService.getDocumentVersions(id);
        List<Map<String, Object>> formattedData = documentVersionList.stream().map(version -> {
            Map<String, Object> versionData = new HashMap<>();
            versionData.put("id", version.getId());
            versionData.put("date", version.getCreatedAt());
            versionData.put("author", version.getName());
            return versionData;
        }).collect(Collectors.toList());

        ObjectMapper objectMapper = new ObjectMapper();
        String jsonResponse = objectMapper.writeValueAsString(formattedData);

        return ResponseEntity.ok()
			.header("Content-Type", "application/json; charset=UTF-8")
			.body(jsonResponse);
    }

    /**
     * 문서 버전 데이터 가져오기
     */
    @PostMapping("/getDocumentVersionData")
    public String getDocumentVersionData(@RequestBody Map<String, Object> request) throws JsonProcessingException {
        ObjectMapper objectMapper = new ObjectMapper();
        String id = (String) request.get("id");
        String json = documentVersionService.getDocumentVersionJson(id);
 		return ResponseEntity.ok()
				.header("Content-Type", "application/json; charset=UTF-8")
				.body(json);
    }

    /**
     * 문서 버전 데이터 삭제
     */
    @DeleteMapping("/getDocumentVersionData")
    public ResponseEntity<Map<String, Object>> deleteDocumentVersionData(@RequestBody Map<String, Object> request) {
        String id = (String) request.get("id");
        snoteService.deleteDocumentVersion(id);
        return ResponseEntity.ok(Map.of("message", "Document deleted successfully."));  
    }
}

import java.io.*;
import java.nio.charset.Charset;
import java.util.Comparator;
import java.util.List;

@Slf4j
@Service
public class DocumentVersionService {
	@Autowired
	DocumentVersionModelDao documentVersionModelDao;
	@Autowired
	SynapUserInfoDao synapUserInfoDao;
	
	public void insertDocumentVersion(String userId, int domainId, String docId, String json) {
		documentVersionModelDao.insert(new DocumentVersionModel(userId, domainId, docId, json));
	}

	public String getDocumentVersionJson(String id) {
		return documentVersionModelDao.getDocumentVersionById(id).getJson();
	}

	public List<DocumentVersionModel> getDocumentVersions(String docId) {
		List<DocumentVersionModel> documentVersionModelList = documentVersionModelDao.getDocumentVersionByDocId(docId);
		documentVersionModelList.sort(Comparator.comparing(DocumentVersionModel::getUserId));

		String currentUserId = "";
		String targetUsername = "";

		for (DocumentVersionModel model : documentVersionModelList) {
			if (!model.getUserId().equals(currentUserId)) {
				currentUserId = model.getUserId();
				targetUsername = synapUserInfoDao.getUserInfoByUserIdAndDomain(currentUserId, model.getDomainId()).getUserName();
			}
			model.setUsername(targetUsername);
		}
		documentVersionModelList.sort(Comparator.comparing(DocumentVersionModel::getId).reversed());
		return documentVersionModelList;
	}

	public void deleteDocumentVersion(String id) {
		documentVersionModelDao.delete(id);
	}
}

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import java.util.Date;

@Entity
@Table(name = " ") // 테이블 이름
public class DocumentVersion {

    @Id
    private String id;
    private String name;
    private String json;
    @Column(name = "create_at")
    private Date createdAt;
    @Column(name = "doc_id")
    private String docId;
    public String getId() {
        return id;
    }

    public void setId(String _id) {
        this.id = _id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getJson() {
        return json;
    }

    public void setJson(String json) {
        this.json = json;
    }

    public Date getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(Date createdAt) {
        this.createdAt = createdAt;
    }

    public String getDocId() {
        return docId;
    }

    public void setDocId(String id) {
        this.docId = id;
    }
}

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import synap.editor.server.model2.DocumentVersion;

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

@Repository
public interface DocumentVersionRepository extends JpaRepository<DocumentVersion, String> {
    /**
     * Document ID에 해당하는 모든 DocumentVersion 객체를 조회
     */
    List<DocumentVersion> findVersionsByDocId(String docId);

    /**
     * 특정 문서 버전 ID에 해당하는 DocumentVersion 객체를 조회
     */
    DocumentVersion findVersionsById(String id);
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN" "http://ibatis.apache.org/dtd/sql-map-2.dtd">

<sqlMap namespace="DocumentVersion">
	<resultMap id="documentVersion" class="synap.editor.server.model2.DocumentVersion">
		<result property="id" column="id" columnIndex="1"/>
		<result property="userId" column="user_id" columnIndex="2"/>
		<result property="docId" column="doc_id" columnIndex="3"/>
		<result property="json" column="json" columnIndex="4"/>
		<result property="createdAt" column="created_at" columnIndex="5"/>
	</resultMap>
	<resultMap id="documentVersionList" class="synap.editor.server.model2.DocumentVersion">
		<result property="id" column="id" columnIndex="1"/>
		<result property="userId" column="user_id" columnIndex="2"/>
		<result property="docId" column="doc_id" columnIndex="3"/>
		<result property="createdAt" column="created_at" columnIndex="4"/>
	</resultMap>

	<insert id="insert">
		INSERT INTO
			revision_note_version(user_id, domain_id, doc_id, json, created_at)
		VALUES
			(#userId#, #domainId#, #docId# , #json#, SYSDATE())
	</insert>
	<update id="remove">
		UPDATE revision_note_version
		SET removed = true
		WHERE id = #id#
	</update>
	<update id="updateRemovedForOverflow" parameterClass="java.lang.Long">
		UPDATE revision_note_version rv
		JOIN (
			SELECT id
			FROM revision_note_version
			WHERE doc_id = #docId#
			AND removed = false
			ORDER BY id DESC
			LIMIT 1 OFFSET 500
		) AS subquery
		ON rv.id = subquery.id
		SET rv.removed = true;
	</update>

	<select id="getNoteVersionById" resultMap="revisionNoteVersion">
		SELECT id, user_id, domain_id, doc_id, json, created_at, removed
		FROM revision_note_version
		WHERE
			id = #id#
	</select>

	<select id="getNoteVersionByDocId" resultClass="java.util.List" resultMap="revisionNoteVersionList">
		SELECT id, user_id, domain_id, doc_id, created_at, removed
		FROM revision_note_version
		WHERE
			doc_id = #docId#
		  AND
			removed = false
		ORDER BY id DESC
		LIMIT 500
	</select>
</sqlMap>