178 lines
7.1 KiB
Java
178 lines
7.1 KiB
Java
package nlib.restful.service.impl;
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import java.nio.charset.StandardCharsets;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.http.HttpEntity;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.http.converter.StringHttpMessageConverter;
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import org.springframework.util.MultiValueMap;
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import org.springframework.web.client.HttpClientErrorException;
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import org.springframework.web.client.HttpServerErrorException;
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import org.springframework.web.client.RestTemplate;
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import nlib.restful.service.DataApiInterface;
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import nlib.restful.service.DataApiReqVO;
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import nlib.restful.service.DataApiResVO;
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import nlib.util.StringUtil;
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/**
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* <pre>
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* @Class Name : DataApiRESTful.java
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*
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* @Description : 통합자료관리시스템에 RESTful API를 통해 질의/응답을 처리한다.
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*
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*
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* @프로젝트명: 지방문화원 통합자료관리시스템 구축사업 (2021)
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*
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* </pre>
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*
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* @ ------------ -------- ---------------------------
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* @ 수정일 수정자 수정내용
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* @ ------------ -------- ---------------------------
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* @ 2021. 6. 22. KNKIM 최초 생성
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*
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*
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* @author 이씨플라자 * DIGITALSHIP KNKIM
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* @since 2021. 6. 22.
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* @version 1.0
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*
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*/
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public class DataApiRESTful implements DataApiInterface {
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private static final Logger log = LoggerFactory.getLogger(DataApiRESTful.class);
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/* DataApi 접속 서버 정보 */
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@Value("#{properties['dataapi.server.ip']}")
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private String DAPI_SERVER_IP;
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@Value("#{properties['dataapi.server.port']}")
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private String DAPI_SERVER_PORT;
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@Value("#{properties['dataapi.server.protocol']}")
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private String DAPI_SERVER_PROTOCOL;
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/**
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* 실제 RESTful API 서버로 요청을 전송하고, 응답받은 자료를 응답VO에 담아서 리턴한다.
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*
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* @param reqVO
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* @param method
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* @return
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*/
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public DataApiResVO request(DataApiReqVO reqVO) {
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log.debug("request > " + reqVO.getReqMethod());
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DataApiResVO resVO = null;
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try {
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//-----------------------------------
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// 입력값 검증작업
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//-----------------------------------
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resVO = DataApiInterface.checkReqCommonParams(reqVO);
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if(resVO != null) return resVO;
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HttpMethod method = reqVO.getReqMethod();
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//-----------------------------------
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// 폼 파라메터 생성 작업 및 요청 처리
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//-----------------------------------
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String url = DAPI_SERVER_PROTOCOL + "://" + DAPI_SERVER_IP + ("80".equals(DAPI_SERVER_PORT) ? "" : ":" + DAPI_SERVER_PORT) + reqVO.getReqUrl();
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log.debug("REQ URL : " + url);
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HttpHeaders headers = new HttpHeaders();
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headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
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ResponseEntity<String> responseEntity = null;
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RestTemplate restTemplate = new RestTemplate();
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restTemplate.getMessageConverters()
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.add(0, new StringHttpMessageConverter(StandardCharsets.UTF_8));
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HttpStatus statusCode = HttpStatus.OK;
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String resultXML = null;
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if(method == HttpMethod.GET) {
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HttpEntity requestEntity = new HttpEntity(headers);
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try {
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responseEntity = restTemplate.exchange (DataApiInterface.makeRequestParamUrl(url, reqVO), method, requestEntity, String.class);
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statusCode = responseEntity.getStatusCode();
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resultXML = responseEntity.getBody();
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} catch(HttpClientErrorException e) {
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log.error("request > HttpClientErrorException 발생 : " + e.toString());
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resultXML = e.getResponseBodyAsString();
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statusCode = e.getStatusCode();
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} catch(HttpServerErrorException e) {
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log.error("request > HttpServerErrorException 발생 : " + e.toString());
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resultXML = e.getResponseBodyAsString();
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statusCode = e.getStatusCode();
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}
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} else if(method == HttpMethod.POST) {
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MultiValueMap<String, String> parameters = DataApiInterface.makeRequestParamMultiValueMap(reqVO);
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parameters.forEach((k, v) -> log.debug("params > " + k + " : " + v));
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HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity(parameters, headers);
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try {
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responseEntity = restTemplate.postForEntity(url, requestEntity , String.class);
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statusCode = responseEntity.getStatusCode();
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resultXML = responseEntity.getBody();
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} catch(HttpClientErrorException e) {
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log.error("request > HttpClientErrorException 발생 : " + e.toString());
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resultXML = e.getResponseBodyAsString();
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statusCode = e.getStatusCode();
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} catch(HttpServerErrorException e) {
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log.error("request > HttpServerErrorException 발생 : " + e.toString());
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resultXML = e.getResponseBodyAsString();
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statusCode = e.getStatusCode();
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}
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} else {
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String message = "RESTFul API Http Method 설정 오류입니다. : POST, GET 방식만 허용됩니다.";
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log.error("request > " + message);
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return DataApiInterface.makeErrorRes("E_ERR_METHOD", message);
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}
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//-----------------------------------
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// 응답 처리
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//-----------------------------------
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log.debug("RES StatusCode : " + statusCode);
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log.debug("RES resultXML : " + resultXML);
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// 응답 자료 객체화
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resVO = DataApiInterface.convertXmlToResVO(resultXML);
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// 처리결과 코드 확인
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if(StringUtil.isEmpty(resVO.getResultCode())) {
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String resultMessage = resVO.getResultMessage();
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if (statusCode == HttpStatus.OK) {
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resVO.setResultCode("S_HTTP_STATUS_OK");
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resVO.setResultMessage(StringUtil.isEmpty(resultMessage) ? "정상처리되었습니다." : resultMessage);
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} else {
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resVO.setResultCode("E_STATUS_CODE_FAIL");
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resVO.setResultMessage(StringUtil.isEmpty(resultMessage) ? String.format("처리에 실패하였습니다. (HTTP상태코드 : %s)", statusCode.toString()) : resultMessage);
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}
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}
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log.debug("RES resVO : resultCode = " + resVO.getResultCode());
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log.debug("RES resVO : resultMessage = " + resVO.getResultMessage());
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}catch(HttpClientErrorException e) {
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log.error("request > HttpClientErrorException 발생 : " + e.toString());
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return DataApiInterface.makeErrorRes("E_REQ_HTTPCLIENTERROREXCEPTION", e.toString());
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}catch(HttpServerErrorException e) {
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log.error("request > HttpServerErrorException 발생 : " + e.toString());
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return DataApiInterface.makeErrorRes("E_REQ_HTTPSERVERERROREXCEPTION", e.toString());
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} catch(Exception e) {
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log.error("request > Exception 발생 : " + e.toString());
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return DataApiInterface.makeErrorRes("E_REQ_EXCEPTION", e.toString());
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}
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return resVO;
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}
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}
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