240 lines
7.9 KiB
Java
240 lines
7.9 KiB
Java
package nlib.restful.service;
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import java.io.ByteArrayInputStream;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import javax.xml.stream.XMLEventReader;
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import javax.xml.stream.XMLInputFactory;
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import javax.xml.stream.XMLStreamException;
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import javax.xml.stream.events.StartElement;
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import javax.xml.stream.events.XMLEvent;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import nlib.sample.web.SampleEncoderController;
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import nlib.util.StringUtil;
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public class XmlConverter {
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private static final Logger log = LoggerFactory.getLogger(XmlConverter.class);
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public static HashMap<String, Object> convert(String xmlStr) throws Exception {
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if(xmlStr == null) return null;
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ByteArrayInputStream bIn = new ByteArrayInputStream(xmlStr.getBytes());
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HashMap<String, Object> resMap = new HashMap<String, Object>();
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try {
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XMLInputFactory inputFactory = XMLInputFactory.newInstance();
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XMLEventReader eventReader = inputFactory.createXMLEventReader(bIn);
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resMap = getElementValue("result", eventReader, null);
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log.debug("Converting XML to HashMap : Done >> " + resMap);
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} catch (XMLStreamException e) {
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e.printStackTrace();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return resMap;
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}
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/**
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* @param rootElementName
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* @param eventReader
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* @param alreadyRootOpened : 부모 요소 찾기 없이 작업 진행할지 여부. false인 경우, rootElementName 요소를 찾아서 이후 값 추출 수행
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* @param startElement
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* @return
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* @throws Exception
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*/
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public static HashMap<String, Object> getElementValue(
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String rootElementName
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, XMLEventReader eventReader
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, XMLEvent firstChildElement) throws Exception {
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HashMap<String, Object> retMap = new HashMap<String, Object>();
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try {
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int depth = (firstChildElement == null ? 0 : 1);
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StartElement startElement = null;
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XMLEvent event = firstChildElement;
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String upperElementName = null;
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String elementName = null; //(firstChildElement == null ? null : firstChildElement.asStartElement().getName().getLocalPart());
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String content = null;
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String elementValue = "";
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HashMap<String, String> elementValues = null;
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boolean hasSubElements = false;
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boolean isFirst = true;
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while (eventReader.hasNext()) {
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// 이벤트가 함께 매개변수로 넘어온 경우, 처음 읽기 생략
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if(!isFirst || event == null) {
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event = eventReader.nextEvent();
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}
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if(isFirst) isFirst = false;
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// 1 레벨 엘리먼트 찾기
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if (depth == 0 && event.isStartElement() && event.asStartElement().getName().getLocalPart().equals(rootElementName)) {
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depth++;
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continue;
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}
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// 1 레벨 엘리먼트내의 2 레벨 엘리먼트 찾기
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if(depth == 1 && elementName == null && event.isStartElement()) {
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elementName = event.asStartElement().getName().getLocalPart();
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elementValue = "";
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elementValues = null;
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hasSubElements = false;
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depth++;
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continue;
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}
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// 2 레벨 엘리먼트 내용 찾기
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if(depth == 2 && elementName != null && event.isCharacters()) {
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content = event.asCharacters().getData();
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if(StringUtil.isNotEmpty(content)) {
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elementValue += content;
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}
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continue;
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}
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// 2 레벨 엘리먼트 종료
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if(depth == 2 && elementName != null && event.isEndElement()) {
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if(!elementName.equals(event.asEndElement().getName().getLocalPart())) {
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throw new Exception("XML문의 요소 시작/종료 태그가 일치하지 않습니다. : " + elementName + " 요소가 " + event.asEndElement().getName().getLocalPart() + "로 종료되었습니다.");
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}
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addValue(retMap, elementName, elementValue);
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System.out.println(elementName + " : -" + elementValue + "_");
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elementName = null;
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elementValue = "";
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depth--;
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}
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// 2 레벨 엘리먼트 > 하위 엘리먼트 존재하는 경우
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if(depth == 2 && elementName != null && event.isStartElement()) {
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HashMap<String, Object> subMap = getElementValue(elementName, eventReader, event);
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addValue(retMap, elementName, subMap);
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depth--;
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elementName = null;
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}
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// 1 레벨 엘리먼트 종료된 경우, 돌아가기
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if(depth == 1 && elementName == null && event.isEndElement() && rootElementName.equals(event.asEndElement().getName().getLocalPart())) {
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depth--;
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return retMap;
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}
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} // while
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} catch (XMLStreamException e) {
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e.printStackTrace();
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} catch (Exception e) {
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e.printStackTrace();
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}
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System.out.println("END");
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return retMap;
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}
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public static void addValue(HashMap<String, Object> map, String key, Object value) throws Exception {
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if(map == null) throw new Exception("값을 넣을 Map 변수가 초기화되지 않았습니다.");
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if(key == null) return;
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if(value == null) return;
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Object curValObj = map.get(key);
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if(curValObj == null) {
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map.put(key, value);
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return;
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}
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if(curValObj instanceof String || curValObj instanceof HashMap) {
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List<Object> values = new ArrayList<Object>();
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values.add(curValObj);
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values.add(value);
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map.put(key, values);
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} else if(curValObj instanceof List) {
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((ArrayList<Object>)curValObj).add(value);
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}
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return;
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}
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/*
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public static void main(String argv[]) throws Exception {
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XmlConverter xmlConverter = new XmlConverter();
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String xmlStr = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\r\n" +
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"<!-- uac.service.board.qna_GET.xml -->\r\n" +
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"<result>\r\n" +
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" <code>S</code>\r\n" +
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" <message>성공적으로 조회되었습니다.</message>\r\n" +
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" <records>10</records>\r\n" +
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" <page>1</page>\r\n" +
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" <totPages>15</totPages>\r\n" +
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" <record>\r\n" +
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" <noticeNo>1</noticeNo>\r\n" +
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" <noticeType>101</noticeType>\r\n" +
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" <title>공지사항 테스트</title>\r\n" +
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" <readCount>15</readCount>\r\n" +
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" <regDate>2021-07-19</regDate>\r\n" +
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" </record>\r\n" +
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" <record>\r\n" +
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" <noticeNo>2</noticeNo>\r\n" +
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" <noticeType>101</noticeType>\r\n" +
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" <title>공지사항 테스트</title>\r\n" +
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" <readCount>55</readCount>\r\n" +
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" <regDate>2021-07-19</regDate>\r\n" +
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" </record>\r\n" +
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" <record>\r\n" +
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" <noticeNo>3</noticeNo>\r\n" +
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" <noticeType>101</noticeType>\r\n" +
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" <title>공지사항 테스트</title>\r\n" +
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" <readCount>55</readCount>\r\n" +
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" <regDate>2021-07-19</regDate>\r\n" +
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" </record>\r\n" +
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" <record>\r\n" +
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" <noticeNo>4</noticeNo>\r\n" +
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" <noticeType>101</noticeType>\r\n" +
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" <title>공지사항 테스트</title>\r\n" +
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" <readCount>55</readCount>\r\n" +
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" <regDate>2021-07-19</regDate>\r\n" +
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" </record>\r\n" +
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" <record>\r\n" +
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" <noticeNo>5</noticeNo>\r\n" +
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" <noticeType>101</noticeType>\r\n" +
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" <title>공지사항 테스트</title>\r\n" +
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" <readCount>55</readCount>\r\n" +
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" <regDate>2021-07-19</regDate>\r\n" +
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" </record>\r\n" +
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" <record>\r\n" +
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" <noticeNo>6</noticeNo>\r\n" +
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" <noticeType>101</noticeType>\r\n" +
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" <title>공지사항 테스트</title>\r\n" +
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" <readCount>55</readCount>\r\n" +
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" <regDate>2021-07-19</regDate>\r\n" +
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" </record>\r\n" +
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" <end>3333</end>\r\n" +
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"</result>";
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HashMap<String, Object> resMap = xmlConverter.convert(xmlStr);
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}
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*/
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}
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