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Merged
merged 2 commits into from
Oct 9, 2025
Merged

Feat/239 law #240

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b66ac35
feat[law]: 리펙토링
Nohheechul Oct 9, 2025
1c4f211
feat[law]: 법령 용어 검색 기능 Version 2 구현
Nohheechul Oct 9, 2025
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15 changes: 12 additions & 3 deletions backend/src/main/java/com/ai/lawyer/domain/law/service/LawService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.util.UriComponentsBuilder;

import java.io.IOException;
Expand All @@ -36,8 +37,8 @@ public class LawService {
private final JoRepository joRepository;
private final HangRepository hangRepository;
private final HoRepository hoRepository;
private final RestTemplate restTemplate = new RestTemplate();
private final ObjectMapper objectMapper = new ObjectMapper();
private final WebClient webClient = WebClient.builder().build();

// 상수 정의
private static final String BASE_URL = "http://www.law.go.kr/DRF";
Expand Down Expand Up @@ -149,7 +150,11 @@ private String getLawSearchResponse(String query) {
.build()
.toUriString();

return restTemplate.getForObject(url, String.class);
return webClient.get()
.uri(url)
.retrieve()
.bodyToMono(String.class)
.block();
}

/**
Expand All @@ -167,7 +172,11 @@ private String getLawDetailResponse(String lawId) {
.build()
.toUriString();

return restTemplate.getForObject(url, String.class);
return webClient.get()
.uri(url)
.retrieve()
.bodyToMono(String.class)
.block();
}

/**
Expand Down
18 changes: 14 additions & 4 deletions backend/src/main/java/com/ai/lawyer/domain/lawWord/controller/LawWordController.java
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Expand Up @@ -19,15 +19,25 @@ public class LawWordController {

private final LawWordService lawWordService;

@GetMapping("/{word}")
@Operation(summary = "법령 용어 검색", description = "법령 용어에 대한 정의를 반환합니다. \n" +
"예시: /api/law-word/선박")
public ResponseEntity<?> getPrecedent(@PathVariable String word) {
@GetMapping("/v1/{word}")
@Operation(summary = "법령 용어 검색 version 1", description = "법령 용어에 대한 정의를 반환합니다. \n" +
"예시: /api/law-word/승소")
public ResponseEntity<?> getPrecedentV1(@PathVariable String word) {
try {
return ResponseEntity.ok(lawWordService.findDefinition(word));
}catch (Exception e){
return ResponseEntity.badRequest().body(e.getMessage());
}
}

@GetMapping("/v2/{word}")
@Operation(summary = "법령 용어 검색 version 2", description = "법령 용어에 대한 정의를 반환합니다. \n" +
"예시: /api/law-word/승소")
public ResponseEntity<?> getPrecedentV2(@PathVariable String word) {
try {
return ResponseEntity.ok(lawWordService.findDefinitionV2(word));
}catch (Exception e){
return ResponseEntity.badRequest().body(e.getMessage());
}
}
}
104 changes: 102 additions & 2 deletions backend/src/main/java/com/ai/lawyer/domain/lawWord/service/LawWordService.java
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Expand Up @@ -10,30 +10,51 @@
import org.springframework.stereotype.Service;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.util.UriComponentsBuilder;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
@AllArgsConstructor
public class LawWordService {

private final LawWordRepository lawWordRepository;
private final RestTemplate restTemplate = new RestTemplate();
private final WebClient webClient = WebClient.builder().build();
private final ObjectMapper objectMapper = new ObjectMapper();

private static final String API_BASE_URL = "https://www.law.go.kr/DRF/lawService.do";
private static final String API_OC = "noheechul";

// 우리말샘 API 설정
private static final String KOREAN_DICT_API_BASE_URL = "https://opendict.korean.go.kr/api/search";
private static final String API_KEY = "2A4D1A844C8BAB682B38E5F192D3D42A";

public String findDefinition(String word) {
// 1) DB에서 먼저 조회
return lawWordRepository.findByWord(word)
.map(LawWord::getDefinition)
.orElseGet(() -> fetchAndSaveDefinition(word));
}

public String findDefinitionV2(String word) {
// 1) DB에서 먼저 조회
return lawWordRepository.findByWord(word)
.map(LawWord::getDefinition)
.orElseGet(() -> fetchAndSaveDefinitionV2(word));
}

private String fetchAndSaveDefinition(String word) {
try {
String url = buildApiUrl(word);
String json = restTemplate.getForObject(url, String.class);
// WebClient 호출 (동기 방식)
String json = webClient.get()
.uri(url)
.retrieve()
.bodyToMono(String.class)
.block();

String definition = extractDefinitionFromJson(json);
saveDefinition(word, definition);
Expand All @@ -52,10 +73,54 @@ private String fetchAndSaveDefinition(String word) {
}
}

private String fetchAndSaveDefinitionV2(String word) {
try {
String url = buildKoreanDictApiUrl(word);

// WebClient 호출 (동기 방식)
String json = webClient.get()
.uri(url)
.retrieve()
.bodyToMono(String.class)
.block();

String combinedDefinitions = extractTop3DefinitionsFromJson(json);
saveDefinition(word, combinedDefinitions);

return combinedDefinitions;

} catch (HttpClientErrorException e) {
log.error("한국어사전 API 호출 중 클라이언트 오류 발생: {}", e.getMessage());
throw new RuntimeException("한국어사전 API 호출 중 오류가 발생했습니다.");
} catch (JsonProcessingException e) {
log.error("JSON 파싱 중 오류 발생: {}", e.getMessage());
throw new RuntimeException("한국어사전 API 응답 처리 중 파싱 오류가 발생했습니다.");
} catch (Exception e) {
log.error("정의 조회 실패: ", e);
throw new RuntimeException("한국어사전 정의 조회 중 알 수 없는 오류가 발생했습니다.");
}
}

private String buildApiUrl(String word) {
return API_BASE_URL + "?OC=" + API_OC + "&target=lstrm&type=JSON&query=" + word;
}

private String buildKoreanDictApiUrl(String word) {
return UriComponentsBuilder.fromHttpUrl(KOREAN_DICT_API_BASE_URL)
.queryParam("key", API_KEY)
.queryParam("req_type", "json")
.queryParam("part", "word")
.queryParam("q", word)
.queryParam("sort", "dict")
.queryParam("start", "1")
.queryParam("num", "10")
.queryParam("advanced", "y")
.queryParam("type4", "all")
.queryParam("cat", "23")
.build()
.toUriString();
}

private String extractDefinitionFromJson(String json) throws JsonProcessingException {
JsonNode rootNode = objectMapper.readTree(json);
if (rootNode.has("Law")) {
Expand All @@ -71,6 +136,41 @@ private String extractDefinitionFromJson(String json) throws JsonProcessingExcep
}
}

private String extractTop3DefinitionsFromJson(String json) throws JsonProcessingException {
JsonNode rootNode = objectMapper.readTree(json);

// channel > item 배열에서 아이템들 추출
JsonNode itemsNode = rootNode.path("channel").path("item");

if (!itemsNode.isArray() || itemsNode.size() == 0) {
throw new RuntimeException("검색 결과가 없습니다.");
}

List<String> definitions = new ArrayList<>();

// 최대 3개의 definition 추출
for (int i = 0; i < Math.min(itemsNode.size(), 3); i++) {
JsonNode item = itemsNode.get(i);
JsonNode senseNode = item.path("sense");

if (senseNode.isArray() && senseNode.size() > 0) {
JsonNode firstSense = senseNode.get(0);
String definition = firstSense.path("definition").asText();

if (definition != null && !definition.trim().isEmpty()) {
definitions.add(definition.trim());
}
}
}

if (definitions.isEmpty()) {
throw new RuntimeException("검색 결과에서 정의를 찾을 수 없습니다.");
}

// 줄바꿈으로 연결하여 하나의 문자열로 만들기
return String.join("\n", definitions);
}

private void saveDefinition(String word, String definition) {
LawWord entity = LawWord.builder()
.word(word)
Expand Down
2 changes: 2 additions & 0 deletions backend/src/main/java/com/ai/lawyer/domain/precedent/dto/PrecedentSummaryListDto.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,13 @@

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.time.LocalDate;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class PrecedentSummaryListDto {
private Long id;
private String caseName; // 사건명
Expand Down
15 changes: 12 additions & 3 deletions backend/src/main/java/com/ai/lawyer/domain/precedent/service/PrecedentService.java
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Expand Up @@ -14,6 +14,7 @@
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.util.UriComponentsBuilder;

import java.time.LocalDate;
Expand All @@ -31,7 +32,7 @@ public class PrecedentService {

private final PrecedentRepository precedentRepository;
private final EntityManager entityManager;
private final RestTemplate restTemplate = new RestTemplate();
private final WebClient webClient = WebClient.builder().build();
private final ObjectMapper objectMapper = new ObjectMapper();

// 상수 정의
Expand Down Expand Up @@ -78,7 +79,11 @@ public List<String> getPrecedentNumbers(String query) {

do {
String url = buildSearchUrl(query, page);
String json = restTemplate.getForObject(url, String.class);
String json = webClient.get()
.uri(url)
.retrieve()
.bodyToMono(String.class)
.block();
JsonNode root = objectMapper.readTree(json);
JsonNode precSearch = root.path("PrecSearch");

Expand Down Expand Up @@ -114,7 +119,11 @@ public List<Precedent> getPrecedentDetails(List<String> precedentIds) {
for (String precedentId : precedentIds) {
try {
String url = buildDetailUrl(precedentId);
String json = restTemplate.getForObject(url, String.class);
String json = webClient.get()
.uri(url)
.retrieve()
.bodyToMono(String.class)
.block();

Precedent precedent = parseJsonToPrecedent(json);
if (precedent != null) {
Expand Down